Archive of Our Own

Chapter Text

Manhattan, New York

Dawn

Coffee and Chaos

The pale morning light of Manhattan was barely filtering through the skyscrapers when Stephen Strange pushed open the cafeteria door with his shoulder. He held Peter against his left hip while Harley shuffled behind him. His eldest son wore that irritatingly satisfied look of a nine-year-old who knew exactly what he had done.

"Dad looks like a zombie," Harley commented cheerfully, shaking his school bag.

"Shut up, Harley," Stephen muttered, his voice hoarse with exhaustion. Peter, at least, remained quiet against his shoulder, his thumb firmly lodged in his mouth—a habit Stephen had been trying to break for months, without success.

The cafeteria was nearly empty at such an ungodly hour. Stephen had surgery at 7:30—a complex craniotomy that would require at least twelve hours of absolute concentration. And he had slept, at most, forty minutes in the last thirty-six hours.

All thanks to the little brown-haired devil who was now examining the menu with exaggerated interest.

"Can I order a chocolate muffin?" Harley asked.

"No."

"Please?"

"I said no. You're either going to eat something with protein, or you're going to school hungry. Choose."

Last night—or rather, this morning—had been a personal hell. Peter had woken up at two in the morning, crying from a nightmare. Stephen had barely managed to get him back to sleep when Harley appeared in his room at three, claiming there was a "giant spider" in the bathroom.

There were no spiders.

There was, however, a bored nine-year-old boy who decided it would be fun to rearrange Stephen's entire collection of vintage watches in "order of coolness," which apparently meant scattering them all over the living room floor.

By five in the morning, Stephen had given up on sleeping altogether.

"Next!" the barista called. Stephen stepped to the counter, adjusting Peter on his hip. The boy weighed almost nothing, but after hours of holding him, Stephen's arm ached.

"Coffee. Triple espresso. Venti. Black," he ordered, his voice sharp with the efficiency of a man who had no patience for small talk.

"Anything else?"

Stephen glanced at Harley, who was staring pleadingly at the candy display case. "Orange juice. And..." He sighed. "A banana walnut muffin."

"I wanted the chocolate one—"

"Harley. Do not test me today."

The boy rolled his eyes—a trait he had definitely inherited from Stephen—but remained quiet.

Stephen paid, took his table number, and turned around, only to collide directly with another person.

The coffee—the blessed, sacred, absolutely necessary coffee—flew from the cup he hadn't even realized he was holding, spilling across the front of his light blue shirt. The same shirt he planned to wear under his surgical scrubs. The same shirt that was now soaked in hot coffee.

"For God's sake—" Stephen began, looking down and then up, directly into the eyes of a man with a neatly trimmed beard and a surprised expression. "Can't you watch where you're going?"

The man blinked. "I—you were the one who turned away without looking."

"I was holding a child," Stephen retorted, his tone icy enough to freeze the East River. "What's your excuse? Blindness? General incompetence?"

Peter snuggled closer to Stephen's neck, and Harley took a step forward, eyes wide as he watched the scene.

The man—wearing ridiculous sunglasses in a coffee shop at six in the morning—opened his mouth, then closed it. He looked almost... stunned. As if Stephen had just spoken in Aramaic.

"Well?" Stephen pressed. "Are you going to stand there, or are you going to apologize?"

"I..." The man removed his sunglasses, revealing brown eyes that studied Stephen with disconcerting intensity. "You really don't know who I am?"

Stephen frowned. "Should I? Are you the incompetent manager of this coffee shop? Because if so, I have a few words about the layout of this place."

A slow, almost incredulous smile began to form on the man's face. "No. I'm not the manager."

"Then no. I have no idea who you are, and frankly, I don't care." Stephen looked at his ruined shirt, then back at the stranger. "But now I'll have to go home, change, and possibly be late for surgery because you apparently didn't learn basic motor skills in kindergarten."

"Dad," Harley whispered, tugging at Stephen's sleeve. "Dad, this is—"

"Not now, Harley."

The man—inexplicably—began to laugh. It was a rich, genuine laugh, completely inappropriate for the situation.

"Something funny?" Stephen asked, his voice dropping to that dangerous tone that made residents tremble.

"Just..." The man shook his head, still smiling. "It's been a long time since someone spoke to me like that."

"Maybe if you weren't a complete—" Stephen looked at Peter, then at Harley, and recalibrated. "—idiot bumping into people, this wouldn't be necessary."

"Tony Stark," the man said, extending his hand. "Nice to meet you, Mr...?"

Stephen looked at the outstretched hand as if it were a venomous snake. "Strange. Doctor Stephen Strange. And no, it's not a pleasure." He adjusted Peter again and turned back to the counter. "I need another coffee. Immediately."

Behind him, he heard the man—Tony Stark, whoever the hell he was—laugh again.

"Hey, Doc," the voice followed him. "Let me pay for this coffee. For the trouble."

"I don't need your charity," Stephen replied without turning around.

"It's not charity. It's common sense. And perhaps..." there was clear amusement in his voice now, "an apology for my 'basic kindergarten motor skills'."

Stephen turned slowly. The man was still smiling, but there was something more in his expression now—curiosity, perhaps. Interest.

"Dad," Harley whispered again, more urgently this time. "That's Iron Man."

Stephen looked at his son. "What?"

"Tony Stark. Iron Man. You know, with the armor? He saved that plane two months ago—"

"I don't watch TV, Harley." Stephen turned his attention back to Tony Stark, reassessing him. Iron Man. Right. That billionaire playboy who decided to play superhero. Wonderful.

"I still need that coffee," Stephen said firmly. "If you want to apologize properly, you can start by making sure I get one before my brain completely shuts down."

Tony Stark—because apparently the universe had a cruel sense of humor—smiled even wider.

"I think I can do that, Doc."

Chapter Text

Metropolitan General Hospital, Manhattan

Morning

Surgeries and Consequences

Metropolitan General Hospital was a colossus of glass and steel that dominated three entire city blocks of Manhattan. Stephen knew every corridor, every operating room, every dark corner where residents went to cry after losing a patient.

He had fifteen minutes before the surgery.

Fifteen minutes to shower, change clothes, review the patient's images one more time, and possibly—possibly—feed more caffeine into his system before picking up a scalpel.

"Dr. Strange!" Christine Palmer's voice reached him before he even got to the locker rooms. "You're late."

"Three minutes," Stephen corrected, without slowing his pace. "That hardly counts as late by my standards."

Christine materialized beside him, her expression oscillating between concern and exasperation—her default state when dealing with him. "You look awful."

"Thank you, Christine. Your honesty is always refreshing."

"I'm serious, Stephen." She grabbed his arm, forcing him to stop. Her eyes scanned him. "How much sleep did you get?"

"Enough."

"Lie."

"Forty minutes."

"Stephen."

He pulled his free arm. "Harley decided to stage a full production of 'How to Drive Your Father Crazy' at three in the morning. Including a dramatic solo about an imaginary spider and an unsolicited reorganization of my watch collection. I had no choice."

Christine sighed, that long, pained exhalation she reserved especially for him. "You can't perform a twelve-hour surgery with less than an hour of sleep."

"Watch me."

"This is not admirable, it's dangerous. For you and for the patient."

Stephen turned to face her fully. "Mr. Anderson has a glioblastoma the size of a golf ball pressing on his temporal lobe. If I don't operate today, he has three weeks to live. Maybe four if we're lucky. I'm the only surgeon in this hospital—on this coast—with the skill to remove this tumor without leaving him like a vegetable."

"Arrogance is no substitute for adequate rest."

"It's not arrogance if it's true." He began to walk away again. "I'll see you in the operating room, Christine. Try not to judge me too harshly."

"Stephen!"

But he was already gone, pushing open the door to the men's locker room and finally—finally—having a moment of peace.

Peace that lasted exactly thirty seconds before his pager beeped.

Stephen closed his eyes and counted to ten. It didn't work. He still wanted to strangle someone.

Nicodemus West was many things: a competent (though not exceptional) neurosurgeon, politically astute (something Stephen despised), and utterly unbearable on a personal level. They had crossed paths repeatedly over the years, each interaction more tense than the last.

West wanted to be the best. Stephen simply was.

This, predictably, created problems.

Stephen ignored the pager, changed his shirt—silently grateful to have kept extra clothes in the closet—and headed for the operating room.

Naturally, Nicodemus West was waiting outside.

"Strange," West said, his smile not reaching his eyes. "I heard you're operating on the Anderson case today."

"Your observation skills are impressive as always, West."

"Interesting case. Challenging." West leaned against the wall, too casual to be genuine. "I had offered to take it, you know. But Dr. Brenner insisted you were the better choice."

"Because I am."

"Confidence is admirable." West examined his nails. "But I heard you had a... difficult morning. Problems at home?"

Stephen froze. "How did you—"

"The hospital is small, Strange. People talk." West's smile widened slightly. "Kids, right? They can be... demanding. Especially when you're alone."

The temperature in the hallway seemed to drop ten degrees.

"My personal life," Stephen said, his voice deathly calm, "is none of your business. It never has been, and it never will be. And if I find out you're spreading gossip about my children, Nicodemus, I'll personally make sure you spend the rest of your career removing hemorrhoids in backwater clinics. Is that clear?"

West's smile faltered. "I was just—"

"Are we clear?"

"...Glass."

"Great." Stephen walked past him, pushing open the operating room door. "Now, if you'll excuse me, I have a life to save. Something you might want to try someday."

The door closed behind him with a satisfying click.

20:20 PM

The surgery... was perfect.

Twelve hours and forty-three minutes of absolute concentration, steady hands, each movement calculated and precise. The tumor was removed cleanly, tissue damage minimized, and Mr. Anderson's prognosis transformed from weeks to potentially years.

Stephen left the operating room at 8:20 PM, exhausted but triumphant.

Christine was waiting, holding a cup of coffee and a wrapped sandwich.

"You're a saint," Stephen murmured, accepting them both.

"I know." She sat down next to him on the bench outside the operating room. "How did it go?"

"Perfect. As always."

"His humility is inspiring."

"I contained a golf ball-sized tumor in a living human brain without causing permanent damage while operating on less sleep than most people get. A little self-congratulation is allowed."

Christine smiled despite herself. "The boys?"

"The babysitter is with them." Stephen checked his phone—a message from Mrs. Chen, the elderly lady downstairs who occasionally looked after the children when Stephen was desperate. "Harley apparently tried to build a 'robot' out of vacuum cleaner parts. Peter is fine."

"You need to sleep," Christine said softly.

"I know."

"Stephen—"

"I know, Chris." He rubbed his eyes. "But Harley has a science presentation tomorrow that he insists I watch, Peter has a pediatrician appointment on Thursday, and I have three surgeries scheduled for the rest of the week. Sleep is... negotiable."

"This is not sustainable."

"It's doesn't need to be sustainable. It just needs to work."

Christine remained silent for a long moment. "That guy in the cafeteria this morning. Tony Stark?"

Stephen stopped with the sandwich halfway to his mouth. "What's wrong with it?"

"Harley texted me. He said you were 'epic and brutally rude' to Iron Man."

"He spilled coffee on me."

"He offered to pay for another one."

"He was wearing sunglasses inside a coffee shop. At six in the morning. He deserved my rudeness."

Christine laughed. "Only you, Stephen. Only you could meet Tony Stark and have no idea who he is."

"I have an idea now. Billionaire. Playboy. Dilettante in fancy dress." Stephen shrugged. "Not impressive."

"He saved two hundred people when that plane nearly crashed in June."

"And I saved Mr. Anderson today. Where is my shining armor?"

Christine shook her head, but she was smiling. "Go home, Stephen. Hug your children. Sleep."

"Two out of three isn't bad."

The apartment was a forty-minute drive from the hospital if the traffic cooperated. Naturally, it didn't.

Stephen arrived at nine fifteen, fifty-five minutes late, to find Harley sitting on the front steps of the building with Mrs. Chen.

Peter was sleeping against the lady's shoulder, his thumb firmly in his mouth.

"Dr. Strange," Mrs. Chen said, her voice carrying that gentle disappointment that was somehow worse than outright anger. "You're late."

"I know. I'm sorry. The surgery lasted longer than—" Stephen stopped, realizing he was

making excuses to a seventy-year-old woman who charged fifteen dollars an hour. "Thank you for looking after them."

"Harley is a good boy." She carefully passed Peter into Stephen's arms. "Very intelligent. But he needs structure, Dr. Strange. Routine."

Great. Yet another piece of parenting advice I didn't ask for.

"I'll keep that in mind," Stephen said, his voice polite but firm. He paid her—generously, because guilt was a powerful thing—and watched her leave before turning to Harley.

"Let's go."

"You're late," Harley said, not moving.

"I am aware."

"You said you would arrive at half past eight."

"And I said I was having surgery. Surgeries don't work on a schedule, Harley. They end when they end."

"Bobby Mitchell's dad arrived on time."

Stephen counted to five. "Bobby Mitchell's father sells insurance. I save lives. They're slightly different things."

"You always say that."

"Because it's always true." Stephen adjusted Peter, who mumbled something incoherent against his neck.

The apartment was a spacious loft on Bleecker Street — large enough for two children, and expensive enough to make Stephen silently grateful for his obscene fees.

He carried Peter straight to the bedroom, changed his clothes, and put him to bed. The boy didn't even blink.

When he returned to the living room, Harley was in the kitchen, scratching at the bottom of a cereal box.

"Did you have dinner?" Stephen asked.

"Mrs. Chen made macaroni and cheese."

"Good."

"The boxed type. The bad kind."

"Food is food, Harley."

"You always say that processed food is—"

"Harley." Stephen pressed his fingers against his temples. "Not today. Please, not today."

Something in him tone made the boy pause. Harley studied him with those eyes that were too sharp for a nine-year-old.

"You look tired," Harley said finally, more softly.

"I am tired."

"Because of me? Because of yesterday's spider?"

Stephen sighed, crossing the kitchen and crouching down to Harley's eye level. "It wasn't your fault. Well, not entirely your fault. You probably could have waited until morning to

decide to rearrange my clocks."

"I was bored."

"At three in the morning?"

"I can't switch my brain off sometimes." Harley shifted his feet. "It keeps thinking about things. Projects. Ideas."

And this was not familiar. How many nights had Stephen spent awake, his own brain refusing to slow down, thoughts of surgical procedures and research and a thousand other things ricocheting in his skull.

He has my brain. And I don't know if that's a gift or a curse for a nine-year-old.

"I understand," Stephen said softly. "But next time, maybe just... read a book? Draw

something? Try not to dismantle my personal property?"

Harley smiled slightly. "I can try."

"That's all the guarantee I'm going to get, isn't it?"

"Probably."

Stephen ruffled the boy's hair, then stood up. "Bed. Now. You have school tomorrow."

"And will you be there? For my science presentation?"

The presentation. Okay. Three o'clock in the afternoon.

Stephen had an appointment at 2:30 that would probably last an hour. If he hurried it along— if everything went perfectly—he might make it.

"I'll be there," he promised.

"You said that last time."

"And I was there last time."

"Thirty minutes late."

"But I was there." Stephen pointed to the hallway. "Bed, Harley. Don't make me repeat myself."

Harley went, not without rolling his eyes first—he definitely learned that from Stephen—but he went.

Stephen waited until he heard the bedroom door close before letting his shoulders slump.

The room was silent. Too silent. The kind of silence that used to be comforting, but now only made the weariness in his bones feel heavier.

He should check emails. Review the files for tomorrow's surgeries. Wash the dishes piled up in the sink.

Instead, Stephen walked over to the sofa and sat down.

Just for a minute.
Just to rest my eyes.

The apartment was quiet around him, the city visible through the panoramic windows, millions of lights twinkling in the darkness of Manhattan.

Stephen's head fell back against the pillow.

Just a minute...

When Stephen woke up, it was two in the morning.

He lay awkwardly on the sofa, his neck at an angle that promised revenge in the morning, still wearing his hospital clothes.

And there was a blanket over him.

Stephen blinked, disoriented, his mind still hazy with sleep. He hadn't... he couldn't remember grabbing a blanket.

Then he saw the note taped to the small table next to him, written in Harley's angular handwriting:

And despite the exhaustion, despite the aching neck and the wrinkled clothes, Stephen Strange smiled.

His sons were going to kill him one day.

Chapter Text

Coffee shop, Manhattan

Thursday, 6:00 AM

Redux Cafeteria

The cafeteria at six o'clock on a Thursday morning should have been a sanctuary of peace. A place where Stephen could get his caffeine fix, feed his children, and exist in relative quiet before facing another day of surgeries, incompetent residents, and... Nicodemus West.

It should be.

"It's him!" Harley hissed as they entered, tugging at Stephen's sleeve. "Dad, it's Tony Stark again!"

Stephen followed his son's gaze and, yes, there he was. The man in the shining armor, sitting at a corner table with an open laptop and three coffee cups scattered about.

"Great," Stephen murmured. "Exactly what I needed this morning."

"Can we talk to him?" Harley was practically vibrating with excitement. "Please? Please?"

"No."

"But Dad—"

"Harley. No." Stephen adjusted Peter on his hip—the boy was still half asleep, his face buried in his neck—and headed for the counter. "Let's order, eat, and go. No unnecessary social interactions."

"You're so annoying."

"Add that to the list of my many failings."

Stephen ordered his usual triple espresso, a croissant for Harley, and oatmeal with fruit for Peter.

Naturally, because the universe had a perverse sense of humor, the only available table was three meters away from Tony Stark.

"This is a conspiracy," Stephen muttered as he sat down, positioning Peter in his own chair and handing Harley his croissant before the boy could start complaining.

"It's strategic proximity," Harley replied, his eyes already fixed on Tony Stark.

"It's annoying."

Peter woke up enough to grab his spoon and start pushing bits of strawberry into his bowl of oatmeal without actually eating anything. Stephen made a mental note to add "getting Peter to actually eat something" to his growing list of worries.

"Dad," Harley whispered, though his whisper was loud enough to be heard throughout the restaurant. "He's wearing the same clothes as yesterday. Do you think he slept here?"

Stephen looked—against his better judgment—and realized Harley was right. The same leather jacket, the same slightly wrinkled band t-shirt. There were shadows under Stark's eyes that suggested he hadn't slept much lately.

Welcome to the club, Stephen thought sardonically.

"It's none of our business," Stephen said aloud, turning his attention back to his own coffee. Which was divine. Absolutely divine. Perhaps the only good relationship he'd ever had was with caffeine.

"But he's Iron Man," Harley insisted. "Don't you think that's cool? Not even a little bit?"

"I find that irrelevant to my life and interests."

"How can you find a man with flying armor irrelevant?"

"Easily. I have a real job."

"Saving people isn't a real job?"

"Saving people while wearing a flashy outfit and seeking media attention is different from saving people through years of medical training and study."

"You're jealous," Harley said, his eyes gleaming with that devilish spark that always preceded trouble.

"I'm not jealous."

"Completely jealous."

"Harley, I swear—"

"Excuse me for interrupting," a voice said, and Stephen closed his eyes briefly, counting to ten.

When he opened his eyes, Tony Stark was standing beside their table, holding a cup of coffee and smiling in that way that probably made normal people melt, but that only made Stephen want to roll his eyes out of his skull.

"Mr. Stark," Stephen said, his voice so flat.

"Doc," Tony replied, still smiling. "I noticed you're wearing a clean shirt today. Improvements."

"Remarkable. His observation skills have improved since yesterday."

"Hey!" Harley suddenly found his voice—and his volume. "You're Tony Stark! The real one!"

Tony shifted his focus to Harley, and his smile softened into something more genuine.

"Guilty as charged. And you are?"

"Harley. Harley Strange." The boy held out his hand. "I'm nine years old, and I built a working rocket engine last year using only parts I found in the basement."

Tony was clearly delighted. "A rocket engine? At nine years old? Kid, you're talking my language. Did it work?"

"For three seconds before Dad found out and confiscated it."

"For good reason," Stephen interrupted firmly. "You almost set the apartment on fire."

"It hardly counts."

"In rocket science, it 'almost' absolutely counts." Tony pulled up a chair—uninvited, Stephen noted with irritation—and sat down. "So, Harley Strange. Tell me about that engine. What kind of propellant did you use?"

And that was it. Harley was launched, spouting a thousand words a minute about solid versus

liquid fuel, oxidizer ratios, and nozzle designs that Stephen honestly had no idea his nine-year-old son knew about.

Tony followed every word, asking questions, offering suggestions, his face animated in a way that probably fooled people into thinking he genuinely cared instead of just enjoying listening to himself talk.

He's good at it , Stephen realized reluctantly. Making people feel like they're the most interesting thing in the room.

He was manipulative. It was rehearsed. It was exactly the kind of billionaire playboy behavior that Stephen despised.

It was also making Harley smile more than Stephen had seen his smile in weeks.

Shit .

"And what do you think, Doc?" Tony suddenly turned his attention to Stephen. "About your son building improvised explosive devices in the basement?"

"I think," Stephen said carefully, "that he should be focusing on age-appropriate schoolwork instead of nearly blowing our house up."

"Boring," Harley and Tony said in unison, then looked at each other and laughed.

Perfect. Simply perfect. His son was teaming up with Iron Man against him.

"Peter," Tony said, noticing the younger boy for the first time. "Is that your brother?"

Peter, who had been busy building a small mountain of strawberries in his bowl, looked up and nodded shyly.

"Hi," he said in his small voice, his thumb already moving toward his mouth before Stephen gently moved his hand down.

"Hey, little one," Tony said, his tone instantly softer. "How old are you?"

Peter showed four fingers.

"Four? That's really cool. I bet you're keeping your dad busy, huh?"

Peter considered this seriously, then nodded. "Dad gets tired."

"Peter," Stephen said quickly, but it was too late.

Tony was looking at him now, and Stephen didn't like it one bit.

"So," Tony said casually, leaning back in his chair. "Single dad? It must be tough balancing two boys and..." he gestured vaguely, "whatever you do."

"Neurosurgery," Stephen said coldly. "I do neurosurgery. I save lives. I operate on human brains. It's relatively important."

"Defensive."

"Necessary."

"Mmm." Tony took a sip of coffee, his eyes never leaving Stephen's face. "I see. The best in his field, I imagine?"

"It's not imagination when it's fact."

"Trusting."

"Realistic."

"Right." Tony's mouth tightened. "You know, you remind me of someone."

"I doubt."

"No, seriously. Super intelligent, super arrogant, absolutely convinced that they are God's gift to their profession."

Stephen narrowed his eyes. "If you're suggesting—"

"Me. I'm talking about myself." Tony smiled broadly. "We're basically the same person, Doc. Except I have a better sense of fashion."

"You're wearing a band t-shirt with coffee stains."

"Ironically. It's different."

"It is not."

"Absolutely."

Harley was looking between them as if he were watching a tennis match.

Stephen could feel a headache forming behind his eyes. "Mr. Stark—"

"Tony. Call me Tony."

"Mr. Stark," Stephen continued deliberately, "while I'm sure this has been a fascinating conversation for you, I really need to get my children to school."

"It's 6:15 in the morning."

"We have a routine."

"A routine that involves arriving at school two hours earlier?"

"A routine that involves none of your account."

"Dad," Harley groaned. "You're being rude again."

"No. I'm being efficient. There's a difference."

Tony stood up, but he was still grinning that irritating smile. "Okay. Well, it was a pleasure, Harley. Seriously—email me if you want to talk more about rockets. Or engineering. Or anything, really." He pulled out a business card and handed it to Harley.

Then he looked at Stephen, and there was something in his expression that was somewhere between amusement and... challenge?

"Doctor. Always a pleasure."

"It's not mutual."

"That just makes it more interesting." Tony waved to Peter. "Bye, little one. Take care of your daddy, okay?"

And then he went back to his desk, leaving Stephen sitting there with a growing sense of dread.

"He's so cool," Harley breathed, looking at the business card as if it were the Holy Grail.

"He's arrogant," Stephen corrected.

"Like you."

"I'm nothing like him."

"You kind of are," Harley said thoughtfully. "You even fight the same way. Like, insulting but not really."

"That's called sarcasm."

"It's called 'you two being unbearable and alike.'"

Stephen opened his mouth, then closed it. Then he opened it again. "Finish your croissant. We're leaving."

But as he gathered his things and herded the children toward the door, he could feel Tony Stark's eyes on his back.

And when he turned around in the doorway, just for a second, Tony was watching.

Still smiling.

Stephen left quickly, ignoring the strange discomfort settling in his stomach.

It wasn't interest. It definitely wasn't attraction.

It was just... irritation .

Yes. Irritation.

Completely irritating .

"JARVIS," Tony said as the door closed behind the Stranges, "search for Dr. Stephen Strange. Neurosurgeon. Manhattan."

"Certainly, sir. May I ask why?"

"Because," Tony said, still looking at the door, "I just met someone who hates me without even knowing me, who is as arrogant as I am, has two adorable children who clearly exhaust him, and wasn't impressed with me in the slightest."

"That's... unusual, sir."

"It's fascinating," Tony corrected. "He's absolutely fascinating."

"Should I remind you that you already have enough projects?"

"JARVIS, my dear, the best things in life aren't planned."

Tony returned to his laptop, but his fingers wouldn't move on the keyboard.

Instead, he was thinking about blue-gray eyes, a sharp voice, and a single father who was clearly hanging by a thread but refusing to ask for help.

Stephen Strange was a puzzle.

And Tony Stark always loved puzzles.

Chapter Text

School

Thursday, 15:05 PM

Domestic Interlude

Harley's class science presentation was taking place in the school gymnasium, featuring explosions of vinegar and baking soda, and at least three projects about volcanoes because, apparently, volcanoes never went out of style.

Stephen checked his watch as he ran down the hallway—3:05 PM. Five minutes late.

Shit.

He had left the appointment as quickly as he could, practically throwing his notes to Christine, and violated at least four traffic laws getting there. But five minutes was five minutes, and he had promised.

Stephen pushed open the double doors of the gymnasium and was immediately hit by a wall of sound — children screaming, parents taking pictures, teachers trying to maintain some semblance of order.

His eyes scanned the room, searching—

Leaf.

Harley stood beside his project in the left corner, his hands tucked into his pockets, his shoulders slightly slumped in a way that made Stephen's heart clench painfully.

Then the boy looked up.

Their eyes met through the crowd, and the smile that burst onto his face—genuine, bright—was worth every second of panic Stephen had felt driving here.

Harley waved frantically, and Stephen waved back, weaving through parents and projects until he reached his son's station.

"You came," Harley said, and there was something in his voice—relief? surprise?—that made Stephen feel simultaneously proud and terribly guilty.

"Of course I came. I promised, didn't I?" Stephen examined Harley's tri-fold board. "Kinetic Energy and Momentum Transfer: A Practical Analysis Using Steel Marbles."

"Did you like the title? I spent twenty minutes thinking about it."

"It's suitably pretentious. I'm proud."

Harley laughed, then launched into an explanation of his experiment—something involving marbles, ramps, and force calculations that were honestly impressive for a nine-year-old.

Stephen listened, asked questions, and ignored the stares of other parents who clearly recognized him. Dr. Stephen Strange, the famous neurosurgeon, in the flesh at the elementary school science presentation.

Let them look.

He was here for his son.

Bleecker Street

A week later, Stephen stood in his kitchen, looking at ingredients scattered across the counter as if they were a particularly complex puzzle.

"Okay," he said slowly. "So we need to... chop the carrots?"

"In thin slices," Harley confirmed, reading the recipe on his iPad with seriousness. "It says here 'cut in mirepoix,' but I think that's just fancy for small pieces."

"Mirepoix is a classic French combination of carrots, celery, and onions cut into uniform cubes," Stephen automatically corrected. "And yes, we're just going to make small pieces."

Christine had literally cornered him in her office three days ago, planted her hands on her hips, and declared that if he didn't take a week off immediately, she would personally drag him out of the hospital.

Stephen had tried to argue.

Christine had pulled out a letter stating, "You haven't had adequate time off in eighteen months."

Stephen had countered with "I have scheduled surgeries."

Christine had said, "West can cover it."

Stephen had nearly choked with indignation at the mere suggestion.

But in the end, there he was, in his own kitchen, on a Thursday afternoon, wearing an apron that said "Trust Me, I'm a Doctor," a Christmas present from Harley last year, trying to figure out how to make homemade lasagna.

"Dad," Harley said patiently, "you know you're peeling the wrong carrot, right?"

Stephen looked down. He had somehow picked up a celery stalk.

"I knew that."

"Of course I knew."

"I'm testing you."

"Of course it is."

Peter was sitting on the kitchen floor, surrounded by plastic pots and pans, banging them together in what could generously be called a rhythm. He was wearing his favorite pajamas, which he refused to take off most days—and had tomato sauce somehow already smeared on his cheek.

"Pete," Stephen said, "how did you get tomato sauce on you when we haven't even started cooking yet?"

Peter looked up, blinked, and stuck his thumb in his mouth.

"Mystery solved," Harley murmured. "He probably found the jar."

Stephen looked at the counter. Yes. The sauce jar had a small handprint on it.

"Peter Strange," Stephen said, using his full name, "did you drink sauce straight from the jar?"

Peter stared at him with those big, innocent brown eyes that had probably saved him from countless trouble times.

"...No?"

"That was a question, not a statement."

"...Perhaps?"

Harley burst into laughter.

Stephen sighed, but was smiling despite himself. "Well. At least you have good taste. It's an expensive sauce."

The cooking should have taken forty-five minutes according to the recipe.

It took two hours.

There was an incident involving melted mozzarella cheese on the stove. Harley almost cut his

finger, didn't, but Stephen had a mini heart attack anyway. Peter decided that pots were drums and did a ten-minute solo.

But when they finally sat down at the table at seven o'clock in the evening, the steaming lasagna between them, Stephen felt... content.

"This looks professional," Harley declared, helping himself to a huge slice.

"It looks uneven and slightly burnt at the edges," Stephen corrected.

"That's what I said. Professional."

Dinner was chaotic — Peter managed to get more sauce on himself than he actually ate, Harley talked nonstop about a new solar energy project that definitely didn't involve anything explosive, Stephen didn't believe him for a second, and Stephen discovered he'd completely forgotten what it was like to have a meal without checking his pager every five minutes.

It was... pleasant.

Alarmingly pleasant.

After dinner came the dishes, Harley rinsed them, Stephen washed them, Peter "helped" by getting in the way, followed by getting ready for bed, an epic battle involving toothpaste, a rubber duck, and Peter insisting that he needed his favorite story read three times, and finally, at eight thirty, both boys were in their beds in the room they shared.

It was their choice, not Stephen's. The apartment had enough rooms for each of them to have their own, but Harley had insisted they should stay together.

"In case he has nightmares," Harley had explained.

Stephen had agreed, and they never changed the arrangement.

"History," Peter demanded, already wrapped up under his blankets with his much-loved teddy bear, Mr. Paws.

"We've already had three stories," Stephen pointed out.

"One more."

"Pete—"

"Please?" Those big eyes again. Peter had turned puppy dog eyes into an art form.

"One," Stephen capitulated, sitting on the edge of the bed. "Short."

He told the story—something about a brave rabbit and a magical forest, half made up on the spot because his brain was too tired to remember real stories—and when he finished, Peter was almost asleep, his thumb moving slowly toward his mouth.

Stephen gently moved him down, kissed the boy's forehead, and turned to Harley.

"You too, troublemaker. Lights out."

"I'm not tired," Harley protested, but he ruined the effect by yawning.

"Of course not." Stephen adjusted Harley's blanket. "Goodnight, Harley."

"Goodnight, Dad." Harley paused. "It was a good night. You should take more days off."

Something tightened in Stephen's chest. "Maybe I should."

He turned off the lights, left the door ajar in case Peter woke up—he always did—and finally, for the first time all day, he had a moment to himself.

Stephen collapsed onto the sofa, picked up the folder of patient files that he had—against Christine's express wishes—brought home, and began to review them.

Mr. Martinez. Cerebral aneurysm. Surgery scheduled for next week.

Mrs. Polly has a slow-growing glioma. Observation for now.

Mr. Patterson. Essential tremors. Possible candidate for—

Your phone beeped.

Stephen frowned. Who the hell was texting at ten o'clock at night?

He picked up the phone, looked at the screen, and froze.

Unknown Number: So, doctor. I found out you have a week off. Impressive. I didn't think you knew how to part with a scalpel.

Stephen blinked. He read it again. Then he typed:

Stephen: How did you get that number?

The answer came almost immediately.

Tony: I'm Tony Stark.

As if that explained everything. As if being Tony Stark magically granted you access to

people's private contact information.

Irritatingly, he would probably concede.

Stephen: That's not an answer. It's a statement of identity that comes with the troubling implication that you've invaded my privacy.

Tony: "Invade" is a strong word. I prefer "ingeniously researched."

Stephen: I prefer 'stalking'.

Tony: Look, I have an AI. It does these things. Don't blame me for having resources.

Stephen: I'm sure there are laws against that.

Tony: Probably. But you're not going to sue me.

Stephen: And why not?

Tony: Because you're curious about why I'm messaging you. If you weren't, you would have blocked my number three messages ago.

Stephen stared at his phone, his jaw clenching. 

He hated that Stark was right.

Stephen: What do you want?

Tony: Chat.

Stephen: At 10 PM on a Thursday?

Tony: Time is a social construct.

Stephen: Time is a measurable dimension governed by physical laws.

Tony: You must be very fun at parties.

Stephen: I don't go to parties.

Tony: This explains a lot.

Stephen should end this conversation. He should block the number. He should go back to his

patient files and stop engaging with a billionaire who clearly had too much free time.

Instead, he typed:

Stephen: Why are you actually texting, Stark?

There was a pause. Longer than the previous ones. Stephen almost thought Tony had given up.

Then:

Tony: Your boy. Harley. He emailed me. About the rocket engine. Asked if I could give him some design tips.

Stephen sat up straighter.

Stephen: Him what?

Tony: Relax. It's nothing inappropriate. The kid is just asking engineering questions. Good questions, actually. He's incredibly smart.

Stephen: I know he's smart. I don't need you to tell me that.

Tony: Defensive again.

Stephen: Protective. There's a difference.

Tony: Fair enough. Look, I just wanted you to know. In case he didn't mention it. I thought you should be aware that your nine-year-old son is exchanging emails with a random adult.

Stephen: You're not random. Unfortunately.

Tony: Ouch. Your words hurt, Doc.

Stephen: I highly doubt it.

Another pause

Tony: I'll answer your questions. If you don't mind. You seem like a good kid. You just want to learn.

Stephen stared at the phone for a long moment. Part of him—the protective, cautious, controlling part—wanted to say no immediately. To end this. To keep Tony Stark as far away from his family as possible.

But another part—the part that saw how Harley's eyes had lit up in the cafeteria, how he had smiled when Tony had actually listened to him, how he was always hungry for intellectual stimulation that Stephen was too tired to provide adequately—hesitated.

Stephen: If you do anything inappropriate, I personally guarantee your armor will become decoration.

Tony: Idle threats don't impress me, Doc.

Stephen: Who said they're idle?

Tony: 😏 You're more fun than you admit, you know?

Stephen: I'm going to pretend I didn't see that emoji.

Tony: Too late. It's already there. Living on your screen forever.

Stephen: Good evening, Stark.

Tony: Good evening, Doc. Enjoy your day off. Try not to think about work.

Stephen looked at the folder of patient files spread out on his lap.

Stephen: No promises.

Tony: I knew it. See you later, Stephen.

Stephen stared at his phone screen.

He should be angry. He should be worried. He should be planning exactly how to keep Tony Stark out of their lives.

Instead, he found himself staring at his phone, something uncomfortable and warm settling on his chest.

"Shit," Stephen muttered to the empty apartment.

This was going to become a problem.

He just didn't know yet what kind.

Chapter Text

Bleecker Street

Tuesday, 2:47 AM

Birthdays and Prison Blankets

Stephen was dreaming about something involving surgeries and floating clocks — his subconscious clearly processing stress in increasingly surreal ways — when he felt the mattress sink beside him.

His eyes opened instantly.

"Dad," a voice whispered. "Dad, are you awake?"

"I am now," Stephen murmured, his voice hoarse with sleep. "Harley, it's almost three in the morning."

"I know, but I was thinking—"

"No."

"You have no idea what I was going to say!"

"Any thought you have at three in the morning is automatically a bad idea." Stephen rolled to the side, blinking against the darkness until his son's outline materialized. "What was it this time? Another imaginary spider? Did you rearrange my clock collection?"

"No," Harley said, sounding slightly offended. "I was just thinking about thermal expansion and coefficients of different materials and if you could create an expansion joint that—"

"Harley."

"—automatically compensates for temperature variations without—"

"Harley."

"What?"

Stephen sat up, rubbed his eyes, and looked at his son with a mixture of exasperation and something dangerously close to reluctant admiration. "You're telling me you woke up at—" he checked the clock on the bedside table, "—two forty-seven in the morning to discuss materials science?"

"Well, when you put it like that it sounds kind of—"

"Because, Harley, and I can't stress this enough, it's 2:47 in the morning."

"But my brain won't shut off! I tried counting sheep, but then I started calculating the physics of jumping objects, and if you could develop an algorithm to predict the trajectory considering air resistance and—"

"This is what I get," Stephen muttered to the universe, "for having a child with my own irritating brain."

"You love me."

"That's debatable at three in the morning."

Harley laughed, then yawned widely, spoiling his appearance of being fully awake.

Stephen sighed. "Are you tired?"

"No."

"You just yawned."

"It was reflective."

"Uh-huh." Stephen considered his options. He could take Harley back to his own room, where he would probably stay awake for another hour thinking about expansion joints or whatever was obsessing his overactive brain.

Or...

"Come here," Stephen said, opening the blanket.

Harley didn't need to be told twice, sliding onto the bed next to him.

"Now," Stephen said, "you're going to close your eyes, turn off that ridiculously active brain, and sleep."

"But-"

Stephen, operating on pure instinct and sleep deprivation, wrapped an arm around Harley in something that was half hug, half wrestling arm lock, and pulled him firmly against his chest.

"Hey!" Harley protested, laughing. "Dad!"

"Shhh. I'm performing a therapeutic restraint."

"That's not real!"

"Now's the time." Stephen grabbed a chunk of the blanket and began wrapping Harley in it like a human burrito, securing his arms to the sides. "You're now officially under blanket arrest."

"Dad!" Harley was laughing so hard he could barely protest properly. "That's not fair!"

"Life isn't fair. Now go to sleep."

"I can't sleep when I'm being held hostage by a blanket!"

"Tent."

"This is abuse!"

"This is creative parenting." Stephen settled in, holding Harley firmly. "And you'll stay like this until A. you fall asleep, or B. I fall asleep and can't hold you anymore. I predict B. will happen in approximately forty-five seconds."

"You can't just... lock me up like this..."

"I just did it." Stephen yawned. "Now shut up about expansion joints and get some sleep."

There was silence for approximately thirty seconds.

"Okay?"

"Mmm?"

"You're drooling over my hair."

"That's a lie."

"I feel wet."

"Go to sleep, Harley."

"...Ok."

Five minutes later, Harley was completely dead, his arms still trapped in the blanket burrito, breathing softly and steadily against Stephen's chest.

Stephen had fallen asleep within seconds.

When he woke up at six, Harley was still there, one foot on Stephen's face.

Stephen gently moved his foot, looked at his son—hair disheveled, mouth slightly open—and felt that familiar tightness in his chest.

He would hate it when both boys grew too old for this.

But that was a problem for another day.

Sunday — Peter's Birthday

The apartment had been transformed into something out of a Paw Patrol-themed nightmare.

Red and blue decorations hung from every available surface. Balloons—so many balloons—floated against the ceiling. There was a huge banner saying "HAPPY 5TH BIRTHDAY PETER!" that Harley had insisted on hanging, although it was slightly crooked because Stephen had lost an argument with a ladder.

The table was covered with food that Stephen had — miraculously — prepared without burning anything: mini pizzas, cheese sticks, fruit cut into vaguely recognizable shapes, and a cake with all the cartoon characters that had taken three attempts and an alarming amount of muttered curses to complete.

The cake looked... well, like it had been created by someone whose artistic skill stopped at stick figures. But Peter had seen it and shouted with delight, so Stephen was calling it a victory.

"Dad," Harley said, examining the cake critically, "why does one have six legs?"

"He doesn't have six. He has two, four, and... creative shadows."

"Those are icing stains."

"Shadows. Of. Icing."

Harley opened his mouth, saw Stephen's expression, and wisely decided to keep quiet.

Peter, wearing his new Chase outfit—which Stephen had hoped was the name of, birthday present number one, delivered at breakfast, greeted with shouts of joy that probably woke three floors of neighbors—was currently hanging upside down on the couch, his feet in the air.

"Look, Dad, how amazing!" Peter said, looking at the clothes.

"It certainly is, Pete," Stephen said, checking his phone for the twentieth time.

Christine had promised to arrive at two. Mrs. Chen from downstairs had said she would arrive at half past two. Some of Peter's preschool classmates and their parents would arrive at three.

It would be small. Intimate. Controllable.

Stephen hated parties — giving them or going to them — but this was for Peter. And Peter deserved a proper birthday party.

Even if it meant Stephen had to engage in small talk with parents he didn't know and pretend he knew what he was doing.

Your phone beeped.

Tony: So it's the little one's birthday today, right? Harley mentioned.

Of course he mentioned it. Harley had maintained a consistent email correspondence with Tony throughout the week, despite Stephen's warnings about "not bothering the busy man with questions every five minutes."

Tony's responses suggested that he was, in fact, not bothered at all.

Stephen: Yes. Five years. Momentous moment.

Tony: Party?

Stephen: Small. Familiar.

Tony: Translation: You're having a panic attack about social logistics.

Stephen: I'm not having a panic attack.

Tony: Of course not.

Stephen: I am perfectly calm and in control.

Tony: How many times have you checked to see if the cake is level?

Stephen looked at the cake. Which he had definitely checked three times in the last ten minutes.

Stephen: That's irrelevant.

Tony: 😏

Stephen: Stop using emojis. You're a forty-year-old man.

Tony: I'm 41, thank you very much. And emojis are efficient communication.

Stephen: Emojis are linguistic crutches for people without adequate vocabulary.

Tony: Or they are modern tools for conveying tone in written communication.

Stephen: Keep telling yourself that.

Tony: You're delaying the party preparations by texting me, aren't you?

Shit. He was.

Stephen: No.

Tony: Liar.

Stephen: I have to go. The guests are arriving in an hour.

Tony: Have fun, Doc. Tell Pete to have a happy birthday from me.

Stephen: Goodbye, Stark.

Stephen put his phone aside, ignored the strange feeling in his stomach, and returned to the pre-party chaos.

The party was... surprisingly successful.

Peter was beaming, running between guests showing off his costume to anyone close enough, and talking nonstop about the design.

Christine arrived with a huge gift, a Lego set that was definitely very advanced but that Peter loved anyway, and proceeded to make Stephen sit down and really relax for five minutes while she supervised the children.

Mrs. Chen brought homemade cookies that were better than anything Stephen could have made.

"Cake time!" Harley announced at four o'clock, gathering the children around the table.

Stephen lit the candles and began singing "Happy Birthday."

Peter, seated in the main chair, a crooked paper crown on his head, was literally vibrating with excitement.

"Make a wish, Pete," Stephen said softly when the song ended.

Peter closed his eyes tightly, his face intense with concentration, then he blew out the candles.

Everyone applauded.

Peter looked up, met Stephen's eyes through the crowd, and smiled that smile that made every sleepless night, every stressful surgery, every moment of doubt completely worthwhile.

"I love you, Dad," Peter said, so quietly that only Stephen heard.

And if Stephen's chest tightened and his eyes burned a little, well.

Nobody needed to know.

Later, after the guests had left, after Harley had helped clean up, unasked, miracle of miracles, after Peter had finally fallen asleep at eight o'clock at night surrounded by new presents and destroyed wrapping paper, Stephen found himself on the couch with a beer he didn't even remember opening.

Your phone beeped.

Tony: So? Did you survive?

Stephen looked around the room—decorations still hanging, bits of cake on the carpet that he would clean tomorrow, the glorious mess of a child's birthday party.

Stephen: Against all odds.

Tony: I knew I could do it.

Stephen: Your confidence is disconcerting considering you don't know me.

Tony: I know you're a brilliant neurosurgeon with two boys you adore, despite pretending they exasperate you. I know you don't get enough sleep, drink too much coffee, and have impossible standards for yourself. I know you baked a Paw Patrol cake today that you probably hated every minute of because your five-year-old loves Paw Patrol. That sounds like knowing someone pretty well.

Stephen stared at the screen, something unsettling stirring in his chest.

Stephen: How do you know about the cake?

Tony: Harley sent photos.

Stephen: Of course he sent it.

Tony: It looked great, actually. Very... creative.

Stephen: If you're being sarcastic—

Tony: I'm not! Seriously. You tried. That matters more than perfection.

Stephen: You're strangely sentimental tonight.

Tony: It's Sunday. Sundays are for sentimentality.

Stephen: That's not a real thing.

Tony: It's now or never.

Stephen found himself smiling despite himself.

Stephen: You're annoying.

Tony: I've heard that before.

Stephen: I bet so.

Tony: Good night, Stephen. Get some sleep.

Stephen: I'm not promising anything.

Tony: Naturally. 🌙

Stephen put the phone down, finished his beer, and looked around his silent apartment.

His children were asleep. Safe. Happy. Peter had had a fifth birthday that he would remember.

And Stephen had, somehow, over the past week, developed something that could generously be called a friendship with Tony Stark.

That was definitely a problem.

But Stephen was too tired to worry about that tonight.

Tomorrow. He would worry tomorrow.

Chapter Text

Stephen regretted it the moment he parked his car in the underground garage of Stark Tower.

He glanced in the rearview mirror. Harley was checking his backpack for the tenth time, muttering about propulsion schemes, and Peter was hugging his teddy bear, "Mr. Paws," watching the garage lights.

Stephen pinched the bridge of his nose, feeling an early headache forming. He still didn't understand how an email exchange about rocket physics had escalated into an in-person invitation on a Saturday morning. Lies. He understood perfectly: Tony Stark was annoyingly persistent, and Harley was impossible to say no to when she used the "but Dad, it's for my academic future" card.

"Rules," Stephen said, his voice rising in tone, which instantly made the two boys pay attention. "Number one: Don't touch anything that shines, makes noise, or looks like it costs more than your combined college education. Number two: Stay where I can see you. And number three..."

"Don't annoy the billionaire with the god complex?" Harley suggested innocently.

Stephen narrowed his eyes. "Don't use my words against me. Especially not in his house."

"Mr. Stark said in the email that I could test his tools," Harley retorted, with that smile he clearly inherited from Stephen.

"Mr. Stark is a public menace with access to unlimited credit cards. I'm his father. I win. Understood?"

Peter nodded vigorously, sucking his thumb. Harley rolled his eyes, but agreed.

They took the private elevator. As soon as the doors closed, a polished British voice echoed through the confined space.

Good morning, Dr. Strange. Harley. Peter. Mr. Stark is expecting you in the main laboratory.

Peter hid behind Stephen's leg, startled. Harley, on the other hand, stared at the ceiling in amazement. "Wow. Are you the AI? JARVIS?"

"At your service, young master."

"Please don't encourage his rebellion," Stephen murmured to the ceiling.

"I will do my best, Doctor."

When the doors opened into the lab, it was like stepping into Tony Stark's chaotic mind. There were holographic screens everywhere, metal parts scattered about, and the strong smell of ozone, grease, and very strong coffee. Classic rock music played at an almost acceptable volume.

At the center of it all was Iron Man himself.

Tony wasn't wearing the impeccable suits or the leather jacket Stephen had seen before. He was wearing a thin, grease-stained black tank top and baggy sweatpants. And there, gleaming clearly through the fabric of the shirt, was the reactor. A ghostly blue circle illuminating his chest.

But it wasn't the reactor that caught Stephen's attention. It was the clinical eyes of a neurosurgeon that kicked in before he could stop it.

Tony's skin was pale, almost gray under the neon lights. There was a faint sheen of cold sweat on his forehead. His shoulders were tense, stiff, and when he turned to greet them, the movement was fragmented, cautious. He's in pain .

"Doctor! You brought the little geniuses." Tony flashed a wide grin that didn't reach his dark eyes. He walked over to them. "Harley, get ready. JARVIS is eager for someone under thirty to question his logic. So, brat number two. Did you like Chase's cake?"

"My father's cake had shadows," Peter said, very seriously, still clinging to Stephen's trousers.

Tony laughed, a raspy sound that ended in a sharp, almost inaudible breath. Almost.

Stephen narrowed his eyes. "Stark. You're pale. Your pupils are slightly dilated, and you're clearly favoring your left side."

Tony blinked, caught off guard, before his smile turned into an ironic shield. "How romantic. You've barely arrived, and you're already undressing me with your eyes and trying to give me a physical check-up? At least buy me dinner first, Strange."

I don't pay for dinners for people who look like they're one step away from multiple organ failure.

"Ouch. That hurts my feelings." Tony dramatically placed his hand on his chest, right over the reactor, and Stephen noticed how his fingers lightly tightened on his tank top before letting go. "Don't worry, Doc. It's just the result of 72 hours of pure genius and too much caffeine."

That's just plain stupidity.

"Are you two going to keep arguing or can I see the thrusters?" Harley interrupted, hands on her hips, looking at the two adults as if they were the real children there.

Tony pointed at him. "I like this kid. He has priorities. Come here, mini-genius, I'll introduce you to Babão. He's a robotic arm with less intelligence than a toaster."

Over the next thirty minutes, Stephen found it physically impossible to relax in that environment. He watched like a hawk as Harley chatted animatedly with Tony about energy exhausts and aerodynamics. It was fascinating, Stephen reluctantly admitted, to see his son's brilliant mind being stimulated by someone who could keep up with him and not just tell him to "read a book."

Peter was sitting on a secure workbench, which Stephen had inspected three times, swinging his little legs and playing with some giant, blunt nuts and bolts that Tony had shoved towards him.

Stephen leaned back against a glass table, his arms crossed over his chest.

At one point, Harley ran to the other end of the lab to inspect a scale model of the jet. Tony stayed behind, near the workbench where Stephen was.

He reached for a mug of coffee, but as he raised his left arm, a spasmodic tremor ran through his fingers. The mug slipped.

Before it shattered on the ground, Stephen, with quick reflexes, reached out and caught it in mid-air.

The silence that followed was dense.

Tony stared at Stephen's hand holding the mug, his jaw clenched so tightly.

Stephen slowly placed the mug back on the table. He turned to Tony, his voice lowering to a whisper that Harley and Peter couldn't hear over the AC/DC music.

"How much does it hurt?" Stephen asked. No sarcasm. No defensiveness. Just the doctor assessing the patient.

"I don't know what you're talking about," Tony retorted defensively, crossing his arms to hide his fingers, which were still trembling slightly.

"I cut open central nervous systems for a living, Stark. I know a neuropathic pain response when I see one. That piece of metal in your chest... it's not just a shiny prop. Is it poisoning you? Or just damaging the nerves around your sternum?"

Tony's eyes darkened, his playful arrogance vanished, replaced by something fierce, wounded, and incredibly stubborn. It was the expression of a man carrying the weight of the world and wouldn't let anyone help carry it.

“My chest is a giant electromagnet that prevents shrapnel from tearing my heart apart, Doctor. This isn’t a day at the spa.” Tony stepped forward, invading Stephen’s personal space, the smell of coffee and exhaustion enveloping him. His tone was low, a challenge. “Forget it. You’re not my doctor.”

Stephen didn't back down an inch. He wielded his arrogance very well, thank you, and wasn't intimidated by Tony's posture. On the contrary. He tilted his head, looking Tony up and down.

" Of course I'm not. If I were, I wouldn't let you act like a negligent idiot with your own health."

"Oh, because you're the model of health and self-care?" Tony retorted, pointing to Stephen's deep dark circles under his eyes. "Please. We both know you're just a control freak who doesn't know how to delegate."

Stephen smiled, a small, sharp smile. "Do you recognize the resemblance, Stark?"

Tony blinked, caught in the trap of his own logic. For a second, the tension between the two ceased to be purely antagonistic and shifted to something... electric. 

"Dad!" Peter's voice broke the bubble. The boy lifted a bizarre structure made of gears and duct tape. "Look! A robot!"

Stephen didn't break eye contact with Tony for a few more seconds. Then he sighed, the medical tension in his shoulders easing, and he reverted to simply being "Dad."

"I see, Pete. Very creative." He walked over to his son.

Tony stood there, running his hand through his messy hair, feeling his chest throb and his heart beat a little faster for reasons that had absolutely nothing to do with the palladium in his blood.

Annoying and know-it-all doctor. Tony thought.

The problem was that Tony Stark loved puzzles. And Stephen Strange was, by far, the most complex one he had ever encountered.

Chapter Text

The bubble of tension in the lab was suddenly burst by the sound of high heels rhythmically hitting the floor.

"Tony, you ignored three calls from the board, which means I had to smile and pretend you weren't locked down here doing..." Virginia "Pepper" Potts' voice trailed off in her throat as she stopped in the middle of the lab.

She glanced at Harley, whose arms were wedged up to his elbows into the chassis of a drone. Then she looked at Peter, who had grease on his cheek and was holding a screwdriver that was almost the size of his arm. Finally, her eyes landed on Stephen, tall, arms crossed, exuding an aura of authority that normally made people at Stark Industries recoil.

"Oh," Pepper said, winking. "We have visitors. Who... are young."

Tony cleared his throat, moving away from Stephen with a haste that did not go unnoticed by the CEO. "Pep! What a wonderful surprise. These are the... unpaid interns."

"I'm Harley," the boy said, raising his grease-stained hand, unfazed by Tony's sarcasm. "And that's my dad. He's a neurosurgeon, not an intern."

Stephen uncrossed his arms and stepped forward, offering a polished smile, his "doctor's smile," which was perfectly polite. "Doctor Stephen Strange. I apologize for the intrusion, Ms. Potts. We were invited."

Pepper shook Stephen's hand.

"Pepper Potts. And please, don't apologize. Anyone who can get Tony to focus on something other than blowing up his own inventions is welcome." She looked at Tony, narrowing her eyes.  "You called children into a laboratory full of hazardous materials?"

"Hey! I'm incredibly responsible!" Tony protested.

" Stark" Stephen interrupted, his voice calm. " Five minutes ago, you were about to let my nine-year-old son test a repellent."

Pepper sighed deeply. "Tony..."

"It was on the lowest setting!" Tony gestured exaggeratedly, which made him stumble slightly, his hand instinctively falling towards his chest. It was a quick, millisecond movement.

But Pepper saw. And Stephen did too.

Pepper and Stephen's eyes met for a fraction of a second. 

"We've already abused your hospitality," Stephen announced, turning to the boys. "Harley, drop the chassis. Peter, put down the screwdriver. Now. Let's go."

"But Dad!" Harley whined. "We were almost calculating the torque rate of the..."

"Harley."  Stephen's voice dropped an octave. It wasn't a request. 

Harley swallowed hard, dropped the garment, and grabbed his backpack. Peter was already trotting over to his father, raising his arms to be picked up. Stephen lifted him easily, ignoring the grease that would inevitably stain his sweater.

Tony accompanied them to the elevator, his hands shoved in the pockets of his sweatpants.

"Don't be a stranger, Doc," Tony said, a smile returning to his lips, though his eyes were tired. "Bring the little monsters back. The lab gets too quiet."

Stephen stopped at the elevator door. He looked at Tony. The arrogance irritated him. The iron mask irritated him. But the sickly pallor... that triggered something deep in the oath he had taken as a doctor.

"Drink some water, Stark," Stephen said sharply, balancing Peter on his hip. "And take a strong painkiller. What if that reactor is giving you peripheral neuropathy..."

"I'm perfectly fine, Dr. Arrogance," Tony interrupted, his eyes flashing with a clear warning: don't come any closer, don't dig .

"You're a terrible liar," Stephen retorted, cold as ice. "And an even worse patient. Goodbye, Stark. Miss Potts."

The elevator doors slammed shut, cutting off the view of a visibly speechless Tony Stark.

Two days later. Metro-General Hospital.

Stephen was washing his hands. The hot water ran over the surgical brush as he counted the seconds, the ritual bringing the familiar peace he only found before opening a skull.

His mind, however, stubbornly continued to wander.

"Doctor Strange."

The voice was oily, excessively polished. Stephen didn't even need to lift his head to feel his stomach churn. Nicodemus West was leaning against the wall near the sink, looking like a cat that had just devoured a canary.

"West," Stephen said emotionlessly. "If you came here for advice on how not to ruin your next microvascular decompression, I'm busy."

West laughed. A nasal chuckle. "Always the epitome of humility. No, actually, I just wanted to congratulate you. I heard you're making friends in very high places."

Stephen's hands stopped rubbing for a split second. He turned off the tap with his elbow, picked up the towel, and turned slowly. His blue-gray eyes fixed on West.

"Explain." Stephen's voice was so soft and lethal.

“Oh, you know how it is. The nurses talk. The residents gossip.” West inspected his own fingernails. “The great surgeon Stephen Strange’s luxury SUV, seen pulling into Tony Stark’s private garage. And on a Saturday morning, no less. I hope this new ‘friendship’ doesn’t distract you, Strange. It would be a shame if your patients, or your motherless children, suffered because of your social ambitions.”

The air in the room seemed to freeze.

Stephen took two steps forward. He was taller than West, more intimidating.

“Listen carefully, Nicodemus,” Stephen whispered, encroaching on the other doctor’s personal space. “You’re a mediocre surgeon who compensates for your lack of talent with cheap politicking. My personal life, my children, and the people I spend my weekends with are in a galaxy so far from your jurisdiction that you’d need a telescope to even try to see them.”

West took a step back, his smug smile faltering.

“If you mention my family again,” Stephen continued, his tone dangerously calm, “I will make sure the hospital board reviews every single one of its minor missteps over the past three years. Do we understand each other?”

West swallowed hard, nodded briefly, and hurried out of the room.

Stephen closed his eyes, taking three deep breaths to catch his breath. He tossed the towel into the basket and walked to the operating room. He needed focus. He couldn't fail. Ever.

11:42 PM - Bleecker Street

The apartment was shrouded in silence. Peter had had a nightmare and was sleeping, clinging to Stephen's arm on the sofa. The TV was silent, showing some random documentary about the ocean floor.

Stephen's cell phone vibrated in his pocket.

Tony : Did you survive the withdrawal from my presence?

Stephen rolled his eyes, but couldn't help but let the tension in his shoulders relax slightly.

Stephen : It was a terrible struggle, but I managed to find the strength.

Tony : Sarcasm suits you, Doc. Harley sent me the sketches of his engine.

Stephen : Why did he email you at 11 PM? I told that kid to go to bed at 9 PM.

Tony : You're failing as a dictator. I sent him back some corrected equations. Don't freak out, I swear it's safe.

Stephen looked at the top of Peter's head, stroking the boy's soft curls. He thought of Tony's paleness, the tremor in his hand.

Stephen : And you? Have you stopped messing around with whatever's killing you in order to try and sleep?

The response took a while. One minute. Two minutes.

Tony : I don't sleep, Doc. I update .

Stephen sighed, rubbing his tired face.

Stephen : Drink a glass of water, Stark. It's a doctor's order.

Tony : Yes, sir.

Stephen stared at the "Yes, sir" on the bright screen for a long time, a strange, warm feeling settling in his chest, something he hadn't felt in a very, very long time.

It was dangerous. All of this was very dangerous.

Chapter Text

Thursday, 5:30 AM.

Stephen stared intently at the coffee maker. The drop of coffee seemed to fall in slow motion. He blinked, feeling the imaginary sand brush against his eyelids, and rubbed his face with both hands.

His sleep quota for the past week was close to twelve hours. In total.

"Good."

Stephen turned slowly. Harley was standing in the kitchen doorway, his hair sticking up in all directions, holding a tablet that glowed in the dark.

Harley, the sun hasn't even risen yet. The birds are sleeping. Go back to bed.

"But the thermal dispersion equations that Stark sent... they don't add up if we consider aerodynamic drag at high altitudes." The boy walked to the kitchen island, completely ignoring his father's exhausted tone. "He reduced the margin of error to 0.02%, but that's impossible with a titanium-gold coating!"

Stephen took a deep breath, counting to ten. He picked up the first cup of coffee, took a sip that burned going down, and placed both hands on the counter, leaning towards his son.

Harley, you're nine years old. You should be worried about whether your sliced ​​bread has a crust, not about finding flaws in a billionaire's aerospace design.

"But he's wrong !" Harley crossed his arms, pouting in a perfectly stubborn way. "And I'm going to email him right now and tell him that."

"You're not going to email anyone before eight o'clock in the morning, or I'll confiscate that tablet until you turn sixteen."

The threat hung in the air. Harley assessed his father's face, the dark circles under his eyes, the rigid posture. The boy wasn't stupid. On the contrary, he read people as well as he read blueprints. He sighed, placed the tablet on the table with a soft click, and picked up an apple.

Okay. But after school, I'm going to destroy Iron Man's ego.

"Have fun. Just don't use any swear words in your dissertation," Stephen murmured, turning to prepare Peter's bottle of chocolate milk, who would inevitably wake up in twenty minutes demanding pancakes cut into the shape of dinosaurs.

At Metro-General Hospital, the situation wasn't much better.

Stephen's surgery was scheduled for 9:00. A spinal cord tumor removal. A one-millimeter error would mean paralysis for the patient from the neck down. It was the kind of case that made other surgeons flinch; it was the kind of case where Stephen excelled.

But when he stopped in the break room to get his medical chart, Christine Palmer cornered him.

"You look awful," she greeted him, arms crossed, her white lab coat immaculate.

" Your morning charm enchants me, Christine."

" Stephen." She ignored the sarcasm, taking a step forward. "Are you trembling?"

He stiffened. He slipped his left hand, the one holding the medical tablet, into his lab coat pocket with a rehearsed fluidity. "I'm cold. The air conditioning on this floor is ridiculous."

Christine didn't seem convinced. "How are things with the children?"

Loud. Too smart. Exhausting. The norm.

" And how are things going with the other problem?"

Stephen raised an eyebrow. "And what would my other problem be?"

The one who occasionally wears a flying suit of armor and has been exchanging emails with his nine-year-old son about rockets.

"Ah. That problem." Stephen sighed, rubbing his temple. "Busy, thankfully."

That wasn't true. Tony was a constant presence on the periphery of his mind. The nightly messages had become a dangerous habit. Stephen knew he had to put a stop to it. Tony Stark was chaos incarnate. And the man's frightening pallor and the glowing reactor made Stephen's medical brain buzz with frustration at Tony's refusal to ask for help.

But before he could say anything more, Nicodemus West walked down the hall. He said nothing, but cast a long, sharp glance at Stephen, a disgusting grin playing on his lips. He had kept his distance after Stephen's threat two days ago, but his presence was an irritating reminder that Stephen's career depended on a reputation for absolute control.

"Go scrub yourself," Christine said softly, breaking the trance. "Room 3 is ready. Don't faint on the patient."

The surgery lasted nine hours and forty minutes.

When Stephen finally made his last point and walked away from the table, he felt as if the muscles in his shoulders had been replaced with lead.

He washed his hands, changed his clothes mechanically and stiffly in the locker room, and collapsed into the chair in his private office. The silence was overwhelming.

His cell phone, lying on the table, lit up. A message.

Tony: Tell me you're having a worse day than I am. The board is discussing quarterly clean energy projections. I'm seriously contemplating throwing myself out of my own apartment window. The armor would catch me, but the scare would be worth it.

Stephen let out a breath that sounded like a hoarse laugh. He picked up the device.

Stephen: I just spent almost ten hours dissecting a tumor from a human spinal cord without severing any nerves. My day was highly productive. Yours sounds like a kindergarten tantrum .

Tony: You're so mean to me, Doc. Don't you have a heart?

Stephen: I have. He just doesn't hit for billionaires who complain about being bored.

Tony: You're hurting my feelings. Harley was much nicer, you know? He completely destroyed my aerodynamic dispersion equation at noon. Your son is a terror.

Stephen smiled to himself in the dark room. Ah, Harley had kept his promise, then.

Stephen: I taught him everything he knows.

Tony: That's a lie. He learned his arrogance, but intelligence has to be genetic. Are you sure he's yours?

Stephen typed and deleted. He typed again.

Stephen: Someone needs to keep your ego in check, Stark. Drink some water and go take your medicine. Whatever painkiller you're ignoring today.

The "typing..." message blinked on Tony's screen for a long time. Stephen waited.

Tony: I'll only drink it if you force me to swallow.

Stephen stopped. His eyes half-closed, staring at the screen.

He typed back with the precision of a sniper.

Stephen: Don't tempt me, Stark. I have access to very thick needles and I have no problem using them to inject common sense into you. Don't test my patience today.

The response was immediate.

Tony: How scary. Good night, Doctor.

Stephen turned off his phone screen, his chest tight with a tension that wasn't just professional. That man would be his downfall.

3:14 AM - Bleecker Street Apartment

Stephen had picked the children up from Mrs. Chen's at eight o'clock in the evening, ignored his own hunger to feed Peter dinner, reviewed Harley's homework, and finally collapsed onto the living room sofa without even taking off his shoes. He only intended to close his eyes for five minutes.