Archive of Our Own

Katsuki always knew he was destined for great things. He knew it when his quirk manifested at 10 years old, as explosive as his attitude. He is still learning control and navigating the attention he is starting to get due to it. He likes being able to show how superior he is to the assholes in his class and the adults who treat him like a kid even though he’s due to present any day now and he knows damn well he’s going to be an Alpha. He’s not a fucking baby and he knows he’s not a useless beta. He's a badass. He’s ruthless at 14 years old and takes no shit. He’s already scared a few grownups with his quirk because they thought he was just a dumb kid. Katsuki brushed this off as he walked home. He was on edge and he was kind of happy that his parents are out of town for the next two weeks on some dumb couples retreat. It feels like he can breathe easier but it was just his fucking luck that his parents didn’t trust him home alone even though he was 14 years old. His mom had made a deal with Stupid Deku to stay over and watch Katsuki as payback for when she used to watch him when he was little. Katsuki didn’t understand, Deku was just a dumb omega who cried at everything!!! Katsuki was just going to end up taking care of him as well as himself! The blonde has no idea how he has even become a pro hero and kept at the top of the ranks.

He was rounding the corner to get to his door when he heard laughing coming from inside the house. He paused before he put his key in the door to listen. “ Todoroki-kun, I know you want me to be there but I have to stay here and watch the kid!! Yes, yes! I understand but I didn’t want to do that in the first place!” Katsuki could hear that he was getting irritated as he went on “Shoto you are starting to sound like my mother and I refuse to listen to this! You may want to throw yourself at any Alpha that looks at you, that’s great! But leave me out of it!…. I know I’m 24 okay? Have you ever thought that I’m not that kind of Omega? I know who I want and it’s not going to change!” Hearing that made Katsuki growl just a little. Dumb Deku is a useless Omega and he can’t even be an Omega correctly it seems. Fuck is he going on about? Who does Deku want? “I know it is never going to happen and I have accepted that! Just let me do what I need to do. Mhmm….. mhmmm. I’m sorry for getting loud but I just…. I just can’t okay? Let it go.”

Katsuki let out the breath he was holding. Get it together shithead. Why do you even care what Deku does and who he wants to be with? It’ll probably be some shitty beta, he probably wouldn’t be able to please an alpha anyways. He pushed his key into the lock and kicked the door open. Announcing to Deku that he’s arrived home. He heard Deku end the call with whoever the fuck Shoto, the other Omega was. Maybe Katsuki could get him to spill later. Yeah that would be fun and just another thing to throw in his face.

Deku popped out of the kitchen with a stupid big grin that didn’t quite meet his eyes, “Hi Kacchan!! How was your last day of school?” Katsuki hated the dumb nickname Deku gave him, but he didn’t say anything about it instead replying “Fucking fine Dumbass why do you care?” “Kacchan’s the best, that’s why I care! I know you’ll do great things! And I like to know if you’ve had a good day!” Deku seemed to stop himself from going on, Katsuki paused, “Okay shitty Deku, weirdo, what’s for dinner or do I need to make it myself?” Deku sputtered “ I -I hadn’t had the chance to get started because I had to take a phone call but I thought I would make Katsudon like mom makes? Is that okay for Kacchan? If not, I can make something else?” Taking a moment, the blonde stared blankly. He preferred Spicier food but he would make do. It’s Deku’s favorite. “Katsudon sounds good but I swear if you fuck it up I’m never letting you into the kitchen again” that came out a bit more angry than Katsuki intended but he just shrugged it off. It was true and that’s what mattered. He left the hallway to go to his room because he suddenly felt exhausted.

Katsuki didn’t even remember falling asleep but he must have because when he opened his eyes the room was dark and he could smell food, Deku must have overdone it with the seasonings if he could smell this strongly from his room. He made it down the stairs just as Deku was setting the table. He grumbled as he took a seat and Deku sat across from him. Katsuki frowned as Deku looked at him; he didn’t have the dumb smile on his face like usual, his eyebrows were pinched together and his lips were in a tight line. Like he was really trying to put something together. “Do I have something on my fucking face?” Katsuki burst out with. Seeing Deku sputter and his face get bright red as he said no was almost worth the anger Katsuki suddenly felt. “Whatever, fucking nerd!” Things settled as they dug in and Deku just started talking about what he’s been up to and how hero work is going, he knew how to draw in Katsuki’s attention though as they started talking about different hero quirks and villains that Deku has encountered. Katsuki would never admit it to Deku but he enjoyed that the greenette was such a good hero, he planned to beat him one day, but he knew he would and that Deku would just have to accept it and deal with being underneath him like he should be wait… what was that? Fuck was he thinking? He shoved that thought down and planned to never think of it again. If Deku noticed that he had got quiet, he didn’t say anything. Katsuki stood up to take the dishes and start washing but Deku insisted he would do it since he was the one babysitting. Katsuki couldn’t help the small set of explosions that popped off as Deku took the dishes from him, he looked up and growled and Deku took a full step back with a small whimper. “Sor-sorry Kacchan!! It’s okay you can go do what you want, I’ll handle these!” And with that he took off to the sink leaving Katsuki to stand there and process what just happened. He just let out another growl and went back to his room.

The next day wasn’t going really any better, he felt even more standoffish than usual and he knew it wasn’t exactly fair for Deku even though he would just smile and make himself seem a bit smaller. He still called out to Katsuki and offered to hang out with him. He was starting to piss Katsuki off how pleasant he was being while the blonde was actively being a dick to him. It finally came to a head when Katsuki had told Deku his friend was coming over without asking. Deku just nodded and said he would make extra food. Katsuki texted Kiri to come over so he can beat his ass at Mortal Kombat and got a hell yeah as a reply with an eta of 15 minutes. Katsuki had been getting restless all day and felt like he was trying to pick a fight with Deku, why? He couldn't even point out to himself but he figured beating shitty hair in a bloody and violent video game would appease this anger he was feeling. Katsuki heard the knock on the door and by the time he was downstairs to answer it he could hear shitty Deku answer the door “Hello!! You must be Kacchan’s friend! It is so nice to meet you!!! Come in, come in!” Katsuki just leaned against the wall as he watched Kirishima take in Deku and realize that a fucking pro hero just answered Katsuki’s door like a butler. Kiri looked behind Deku and towards Katsuki, wide eyed and with a small smile on his face “Kacchan huh? What’s this? Bakubro has a new nickname I get to use?” Katsuki flipped him off in response and started back up the stairs.

“So you’ve got a pro hero babysitting you dude? That’s so fucking awesome! You’ll have to let me chat with him more later he’s kind of hot and I bet he could really take a knot!” With that he wiggled his eyebrows but before he could even fully swing his door shut Katsuki had him pushed up against the wall with his throat bared as Katsuki was growling in his face. “Whoa whoa bro, it was a joke! I promise!! When did you present dude? I’m sorry Bakubro I won’t say that again. He’s all yours dude!” Katsuki wasn’t listening all he could think about was Kiri wanting to take his DEKU away from him. Wanting to knot his fucking omega like Katsuki had no claim! Deku was his, his to claim! His to fuck! His to mate! A smell entered Katsuki’s brain and he realized that Kiri was starting to put out distressed pheromones and it made Katsuki release him and come back to himself, letting a few pops off. Kiri got the hint and booked it.

He just glared at Kiri and told him to get lost. He’d apologize later. Katsuki needed to lay down and just not fucking think for a second. But of course Shitty fucking Deku couldn’t let that happen as he walked into his room and took in the fact that Katsuki was on his bed looking so small in the corner. As he walked forward with a small whisper of “Kacchan?” He took a breath and stopped in his tracks as Katsuki looked up from his knees and into his eyes. His eyes were fierce and Deku felt the pull almost instantly. He needed to show His Alpha he was good and could provide comfort. He did it without thought as he got to the edge of the bed and went to his knees and bared his throat to the young boy. Katsuki looked interested and edged closer to where Deku was frozen on the floor in what he realized was a position of submission. He realized he could smell him, he could smell a rainstorm in the spring with a hint of flowers. Katsuki could see that Deku was fighting with himself in his eyes and as much as Katsuki wanted to pounce on him he couldn’t do that to Deku. He might be an asshole but he isn’t that kind of asshole who just takes what they want.

Katsuki let out a soft purr and he could see the tension leave Deku and all of a sudden Deku was up off the floor and out the room before Katsuki could blink. He could smell the salt and realized Deku must be devastated to be so dominated by his subgender that he wasn’t himself at that moment. Katsuki sulked because he didn’t know what to do. He was an alpha, that much was clear but why was he upset that Deku left. He was just shitty Deku. Katsuki laid back down and just pretended he didn’t exist. He woke up at like 2am and decided to sneak into the kitchen since he hadn’t eaten because of everything earlier. He slipped out of his room and was on his way to the kitchen when he heard a noise from the guest room. He was surprised, he figured Deku would have left and made his Auntie Inko watch him for the rest of his parents retreat. Katsuki paused and realized Deku was talking, he must have been on the phone because he could only hear Deku.
“Mom, I don’t know what to do? How am I supposed to stay here and deal with this, with him? I almost gave into my instincts earlier and he just presented Mom, I can’t do that to him! He deserves so much more and I feel like a pedophile mom! I just, I need to leave so that way I don’t screw him up! He’s 14 for Pete’s sake and I am 10 years older! It’s not okay! I don’t care if it’s what my omega wants, I can’t do that to him. He’s just a kid!!! Can you tell Auntie Mitsuki and maybe she can find someone to replace me here while they are gone so I can leave and forget about all this? Maybe take Shoto up on his offer, and just accept whatever Alpha that is nice to me. Thanks Mom, I love you too and sorry for failing you, for not being normal. No, I know you don’t think that…. but it’s true. You just don’t see it because I’m your son. I gotta go…. Bye mom.” Katsuki could hear how shaky his voice was and how his breathing was getting uneven. He could almost taste the panic attack Deku was working himself into. Katsuki could feel his alpha pacing. It may be new but he can tell his alpha is uneasy with Deku feeling so sad and worried. With a deep breath Katsuki opened the door. Deku didn’t even hear him over the sound of his heavy breathing. He was down between the bed and the wall, all Katsuki could see was his green curls. He figured he would at least announce his presence. As he opened his mouth to say something, anything, he let out a whine/chirp he didn’t even know he could make. As he looked up to see if Deku had heard him, he was met with the vibrant Emerald eyes that were filled with tears that were flowing down his face. Deku seemed to just completely lose it then. “Kach- Katsuki! What are you doing? You should be in bed!” He was gasping between each word it seemed and the smell filling the room seemed to turn into a thunderstorm. Katsuki hated it! He hadn’t even realized that he moved but suddenly he was kneeling in front of Deku with his hands on either side of his face using his thumbs to wipe those tears away. His chest was rumbling and Deku seemed to calm down bit by bit.

He leaned his forehead against Deku’s in what he hoped was a calming gesture. He really didn't know shit about being caring and gentle. It wasn’t his nature but the alpha in him seemed to know what to do to comfort his his? Omega. Deku let out a sigh and nudged his cheek against Katsuki’s. And then it felt like all too quickly, Deku was pulling away muttering apologies and trying to send Katsuki back to his bedroom. Which apparently Katsuki's alpha had a problem with because again before he could process it he had a hand in Deku’s curls and was making him bare his neck to him. He heard him cry out and then the smell of rain got stronger as Katsuki leaned his face into his neck to smell him. Katsuki let out a purr at Deku’s obvious submission and reaction to his alpha. Deku whined and finally spoke up “ka-ah Kacchan, what are you doing?” Katsuki smirked against the omega’s neck. “I’m doing what my alpha is asking me to do Stupid Deku. Do you want to know what it’s telling me Deku? Do you want to hear everything the alpha is wanting to do right now? Right here? With you Omega? Katsuki trailed off with a growl, a harder tug to Deku’s curls, and slight press of his lips over the prominent scent gland. He felt more than heard Deku’s whimper in response. His smirk turned softer as he pulled back and let go of Deku. His alpha whines at the loss of contact but Katsuki wanted to show Deku he wasn’t lost to his hormones in this moment even though he just presented. He remembers what they taught in Health class. How some Alphas and Omegas lose themselves when presenting. The blonde knew he was better than all of them, more disciplined than to let his alpha rule him. He could tell Deku was watching him, trying to see what Katsuki had going through his head.

“Ka-Katsuki, thank you for comforting me. But you don’t nee-need to. I’ll be okay. I’m trying to find someone who can stay with you for the rest of you-your parents trip. I don’t think I can be here anymore…” Katsuki pulled further away like he was burned by one of his own damn explosions. The Alpha bristled and Katsuki growled deeper than he did at Kiri. “What the FUCK Izu-ku?” Katsuki stood up and started pacing. “What in the actual shit do you mean find someone else to be HERE?” Katsuki knew he was getting louder but he couldn’t help it his omega was trying to push him away! “LISTEN HERE YOU SHITTY FUCKING DEKU! IF ANYONE ELSE SO MUCH AS STEPS FOOT IN THIS HOUSE I WILL BLOW THEIR FACE OFF! I DON’T WANT ANYONE ELSE HERE! WHAT, BECAUSE I’M A FUCKING ALPHA ALL OF A SUDDEN, YOU YOU’RE WHAT, YOU’RE TOO GOOD TO BE AROUND ME? YOU FUCKING PIECE OF SHIT! HAH?! THE FUCK! WHAT DO YOU MEAN YOU CAN'T DO THIS ANYMORE? YOU HAVEN’T EVEN DONE ANYTHING TO TALK LIKE THAT! WE’VE BARELY FUCKING DONE ANYTHING AROUND EACH OTHER AND YOU’VE BEEN HERE FOR WHAT? THREE DAYS!” Katsuki was starting to get frustrated as he talked he could smell the thunderstorm getting stronger and it looked like Deku was going to bolt at any second he kept glancing between Katsuki and the door. Well that wasn’t going to fucking cut it. Katsuki growled as he suddenly whipped around and stomped over to the door. He closed it and locked it, took a deep breath and turned around to see Deku standing by the foot of the bed, seeming to be at war with himself.

He was tugging one of his curls and mumbling to himself as he looked at his feet. He seemed to steel himself with a big breath and he looked up at Katsuki and the blonde was the one to freeze. He had never seen this look on Deku before his expressive eyes looked cold and he had this set to his shoulders to wear if Katsuki didn’t know he was an omega he could have passed for an alpha. “Katsuki, I know you don’t understand this but it is for your own good and mine! You literally just presented and sent one of your friends fleeing. Why? I have no idea and I couldn’t even be the adult and talk to you about it because your alpha demanded I submit to you without you even realizing what you were doing! I acted like a teenager instead of an authority figure! I couldn’t even stop myself !!! And that isn’t your problem and you shouldn’t have to deal with that from me!!! I am 10 years older than you and I can’t even control my actions! I am a Pro and I wanted to throw myself at you!!! I’m disgusting and you deserve better! You are just a kid!” With that said tears started rolling down his flushed cheeks and Katsuki could see the shame in his eyes and he stared Katsuki down.

Katsuki’s alpha was Pissed.Small explosions started popping off. His omega wanted him and he thought himself disgusting for it?! His omega was upset because he did what a good omega does and submit to his alpha? The omega wanted to accept an alpha that wasn’t him? Would throw this away for someone he didn’t even know and wouldn’t love him, because what? Because Katsuki was young? And what kind of alpha lets his omega feel like this? Age doesn’t matter in this. Katsuki has never been one to turn down what is rightfully his. He will be damned if he lets Deku feel like this. Like he’s unworthy of Katsuki.

Katsuki took a step forward and Deku took a step back but that was a mistake as the back of his knees hit the bed and sent him sprawling back. By the time Deku was able to lean up on his elbows, Katsuki was on him. He climbed over him and sat down to where he could pin Deku’s thighs with his own legs and he could push him back down with a huff. Deku went to try to push him off but Katsuki let out a warning growl and Deku whimpered and let the fight leave his body. The alpha preened at that and Katsuki let a small smile out. He took a deep breath and he could smell the thunderstorm going back to a gentle rain and there was a hint of something else but he didn’t care to place it at the moment. All he wanted was to show Deku how wrong he was. How right this was. Katsuki leaned forward and put the lightest of kisses to Deku’s cheek, as he pulled back he had the privilege to see those long lashes close over those deep emerald eyes. Deku looked so pretty like this and Katsuki couldn’t prevent the purr that ripped out of his chest if he tried. How has he never realized how beautiful this omega is? Deku looked up at him through those lashes with a flush rising, and it clicked. Izuku was his and always has been.

“You know Deku, I may be young but I’m not as immature as you think I am. Hell in some ways I think I’m more mature than you are.” He clicked his tongue as he leaned a little further back to sit more at Deku’s hips so he could really look at him. He was wearing a dumb shirt that said laundry day but it was pushed up to reveal a bit of his stomach. Katsuki couldn’t resist trailing his hand across what he could see. He saw Deku shiver and it looked like he was about to say something but Katsuki wasn’t ready to hear it. He shifted to lean forward again and Deku made a pained sound and that scent flared up again, sweet like honeyed flowers. Katsuki glanced up to see Deku had his eyes closed and his face scrunched. Like he couldn’t stand to see what was happening. Fine I know just what to do to get those big dumb eyes back on me. Katsuki listened as his alpha said to rock back up to his sitting position. As Katsuki rocked back up Deku’s hands shot out and gripped the blonde’s hips hard. Katsuki growled at the strength being used but Deku was staring at him and his eyes were so big, slightly watery, and seemed to get darker the longer Katsuki stared at him “Ka-Kacchan, you need to stop!” Katsuki smirked, “ Now why would I do that when I have you finally paying attention heh?” He rocked again and was starting to realize the effect he was having on the omega, he could feel the bulge against his ass getting harder. It sent a wave of heat down to his own crotch and he could see the moment Deku realized it. Deku froze and his nostrils flared; he looked up at Katsuki and whined as his hips jerked up without his consent. His face was flushing even brighter and Katsuki had the sudden urge to nip at his cheek, so he did. He got another whine and as he was pulling away Deku followed him up and caught his lips in a kiss. Their first kiss. It was gentle and slow and everything Katsuki didn’t realize he wanted. He let out a growl and pushed back to deepen the kiss. He was only a little nervous because it was his first kiss but he knew Deku wouldn’t make fun of him and it even seemed Deku was even more into it because of that. Katsuki pulled back with a nip to Deku’s bottom lip.

“Izuku, you’re mine, you know that don’t you? I may have just presented but I can tell, you’ve always been it for me. So don’t you feel bad about yourself or for me because there is no one else I want to do this with or would want to do this with. Dek-Izuku let me have you? Let me show you how great you are. How much I need and want you. Let me show you how you make my alpha feel. You’re so beautiful and mine” Katsuki was starting to get more desperate as he was talking and his hips were starting to push harder onto Izuku. “Kacchan called me beautiful?” Izuku looked dazed as he spoke, hips hitching up relatively hard like he was trying to buck the blonde off, maybe he didn’t mean to say it out loud. Katsuki nipped at his lips again “ Of course you are! You’re perfect for me, such a strong omega, so smart and caring, mine Izuku, only mine.” Katsuki let out another growl. And he shoved a hand under the greenette’s shirt. He seemed to get with the program and lift up so Katsuki could pull it over his head and toss it to the floor. Katsuki was harder than he’d ever been but he didn’t care at all about himself because his alpha told him this was all about the omega underneath him. He spread his hands across Izuku’s chest and was amazed how big his hands were against him. It was hard to tell that he was a decade younger than his omega and Katsuki liked that, knowing that before too long this won’t be an everyday issue for his omega. Who was going to suffer alone if Katsuki couldn’t man up and show him how loved he could feel and how well the blonde could take care of him.

Despite how on edge Katsuki's alpha felt he didn’t plan on getting himself off, just his Izuku, who was getting lost in the sensations of Katsuki grinding down on him. The man below him was lifting his hips up softly like he was afraid he would break the alpha on top of him. Katsuki wouldn’t break and he pushed down harder and quicker to prove it. He was letting out little growls as his omega was kneading his hips. Katsuki was ready to go farther so with one more sharp thrust down Katsuki slipped his hands into Izuku’s and pulled them away. He rubbed across the scar covered knuckles before placing a kiss on them and letting them fall to either side of the greenette. The omega whimpered from the loss but raised up quickly when he realized Katsuki was off the bed and was tugging his jeans and boxers down. “Kacchan” he whined “No….no…. What’re you doing?!” Katsuki glanced up from his objective and just raised an eyebrow “Shut up and let me do this, I need to do this.” Taking a calming breath, he pulled both items off and looked at the most gorgeous cock he had ever seen. It was flushed such a pretty pink and the tip was damp where it stood towards Izuku’s belly. It looked big and not too thin, the alphas mouth started watering just looking at it, the omega gasped and tried to pull his legs together to hide himself but Katsuki was quicker. He had his hand on the inside of his thighs and applied pressure so Izuku would get the hint and open his legs for his alpha. Once Izuku did as silently asked Katsuki purred and leaned forward to nose at the dick in front of him, he didn’t realize what he was doing until he heard a slight giggle. He looked up to see his soon to be lover’s face filled with such joy it was infectious. He nipped at the skin right by side of Izuku’s dick and gave him the biggest smile back. Here in this spot he could smell that sweet smell again with the undertone of what could only possibly be Izuku. He reached forward and wrapped his hand around the greenette and let out a huff at how perfectly his hand was able to cover his lover all the way around.

He wanted to do so much more but his alpha kept reminding him omega’s pleasure, omega’s comfort, omega’s needs. Katsuki used his other hand to roll Izuku’s balls up and lift them so he could peak at where the sweet smell was the strongest, his omega was so wet, there was a puddle forming on the bed. Katsuki’s mouth watered at the uncovered smell and he couldn’t help himself as he leaned forward to get a taste. It was like the best hibiscus tea with honey he had ever had and he didn’t think he would ever get enough. Izuku whimpered as Katsuki shyly slid his tongue out to get more of that taste. His legs started shaking, thighs closing in on Katsuki’s head and it urged the alpha on more. His own need between his legs was completely forgotten as he got lost in Izuku’s most private place. Those thick thighs giving him a lovely place to grab ahold of to keep Izuku still. He kept going and pushed his tongue further as the omega was getting louder, the alpha in his head roaring that he was doing great and giving his omega what he needed. Katsuki was in heaven and didn’t want this to end but he needed to get his lips on his omega’s dick. His alpha demanded that he not waste his seed so easily, with a groan Katsuki lifted himself back up so he could start paying attention to his omega’s dick and it was darker now with more blood in it even though Katsuki hadn’t done much with it. He looked at Izuku and his dick jumped in his shorts at the look he was getting given. Izuku looked like he wanted to consume him. He was a mess of tears and drool and Katsuki's alpha was ecstatic and without any more thought he tried to get as much of Izuku’s dick into his mouth that he could. Imagine his surprise that he forgot he’s never done this before and immediately gagged. He pulled back and waited for his omega to laugh at him. When none came he gave a small glance up and Izuku was just staring at him like he roped the moon and pulled it down for him.

Katsuki gave a small smile and dove back down, going slower, so he didn’t choke and throw up. He could taste the salty precum and he moaned. Apparently he wanted to consume everything his omega had to offer. He didn’t know much about giving head besides what he had seen in porn but it didn’t seem like his omega minded much if the small thrusts he was giving were any indication. That made Katsuki purr and it spurred Izuku on more and his thrusts got more aggressive and the blonde loved it, loved knowing he could get his omega like this. Just losing himself to the pleasure his alpha was providing, Katsuki was getting more confident and was able to push down further. Izuku let out a strangled moan and that was all the warning that Katsuki got before his mouth filled with cum and had to pull away and some missed his mouth and slid down his face. He was breathing hard as he wiped the cum on his fingers and without thought he shoved it into his mouth. He must have closed his eyes because Izuku growled and Katsuki’s eyes opened to see his greenette staring at his fingers that were in his mouth, the blonde smiled around his fingers and pulled them out of his mouth and brought them to Izuku’s, who didn’t even hesitate to pull them in his mouth and suck the fluids off. Katsuki groaned and came right then and there, no warning. Like the 14 year old he was, he didn’t feel any embarrassment though with how sated his omega was. He crawled to Izuku’s side and curled him into him. It felt a little funny because he was taller than him but his alpha said this was what he needed to do. He glanced down and saw his omega had fallen asleep against him. He wanted to get clean but he wasn’t going to risk waking his peaceful greenette so he brushed a kiss to his forehead and let himself drift off to thoughts of Emerald eyes.

The next morning he woke up feeling better than he had in a long time. He was warm and his pillow was tucked into his arms. He twitched and as he was settling, two things came to his mind. 1. Why was he so comfortable? By the time he woke up he was generally ready to bail from his bed? And 2. Why did his pillow squeak? Katsuki cracked open his eyes and realized his pillow was not a pillow but was a sleeping Deku….. oh right! His Deku. Katsuki chuffed and let out a pleasant growl. Deku who must have awakened if he had squeaked earlier. Katsuki nuzzled his neck and gave a quick kiss there. “Mornin Izu” he whispered, his voice was rough and his throat hurt. He didn’t care though last night was so worth it. He felt Izuku stiffen his arms and start trying to pull away. The fuck does he think he’s doing? He barely heard the words coming from his omega “ oh nonononono. Um Katsuki? You need to let me go… this was a mistake. Let go of me!” Hearing those words burned Katsuki and he let Deku go while trying to process. Izuku slid out of the bed and ran into the bathroom. Katsuki’s alpha piped up and told him to fix this. His omega would not turn him away!

Katsuki groaned and got up and realized his shorts were stuck to him since he didn’t clean up last night. He slowly made his way to the bathroom and the smell of the thunderstorm was getting stronger. His damn Deku overthinking everything. He sighed and knocked on the bathroom door. When no answer came he tried the knob. It was unlocked and he walked in. Deku was sitting on the floor of the shower and curled into himself. Katsuki did what his alpha wanted and he stripped down and joined Deku, kneeling and pulling him into a hug. “Deku, you need to breathe. It’s okay, I’m here and I’m not going anywhere. If last night was a mistake, it was the best mistake I’ve ever made. You were made for me, okay? I know you can feel it, just like I can. I want you, I want to be with you. I want you to be mine. I want to be a pro hero just like you and I want to be number one and for us to fight all the villains of the world side by side. I know you’re worried about what others think. I know I’m young and that scares you, but to me it means I don’t have to miss out on anything with you and I don’t have to waste time with shitty extras trying to date and get my heart broken and… fuck Izu. I don’t want to be with anyone else.” Katsuki felt like he was baring all of himself for the man in front of him. Izuku sniffled and looked up at him with those big emerald eyes that were welled up with tears “How can you say that?! I took advantage of you last night! You just presented Kach-Katsuki! You have no idea what you want! You can’t throw away your whole future for someone like me! I’m a monster! A-a cradle robber!” With that Deku started sobbing. Katsuki knew he had to do something to get him to calm down so he started the shower and got the water warm, once it was to his liking he sat down and tugged Izuku to sit in between his legs with his thrown over one of Katsuki’s legs and could hold Izuku to his neck so he could scent him.

Once he had him settled he started rubbing his back and started purring. The blonde didn’t want to start talking yet, not until he couldn’t smell the panic attack anymore. Deku slowly came out of it and was slowly relaxing more into the young alpha’s embrace. Small sniffles could still be heard along with some very quiet whines. “Izu? Do you really think I would do something I didn’t want to do? When have I ever done something that wasn’t my own choice?” Katsuki spoke quietly, he didn’t want Izuku hurting himself like this. “Look at me, omega?” He desperately wanted to make sure that Izuku understood him. The greenette slowly pulled back and the alpha could see that he was fighting his Omega’s will in meeting Katsuki’s eyes. Emerald eyes focused on Blood Red. “ I am sorry for being so mean to you a–and treating you like shit but can’t you feel how right this is? Truly? I mean the moment I smelled you everything fell into place and I have a life time to try and make it up to you so you can see that I am the one for you. My alpha sees you omega.. Izuku and I can feel it in my soul that I won’t ever want anyone like I want-no need you. To see you hurting because of me because of something we can be together. I will do anything to make you stop hurting. Fuck I- I will leave you alone but only if it’s what your heart and soul truly want…” Katsuki could hear his voice cracking as he was talking and he could feel the sting of tears in his eyes as he’s offering to deny the alpha in him everything he just barely got a taste of the night before, but fuck if he wouldn’t do whatever he could to cause Izuku to be happy again even if it has to be him leaving Deku alone. Like He said he may be an asshole but he isn’t that type of asshole. He didn’t even realize he had closed his eyes and turned his face away until he heard the smallest of whines. Focusing back in and looking at the greenette for what could be the last time for who knows how long if ever, He tried to prepare himself. “Katsuki….”

Those Big Green Doe eyes are looking into his soul he swears as Deku thinks about whatever he is clearly going to say. The water was mixing with his tears so at least Katsuki can pretend its not as heartbreaking as it is for what is surely coming next. Deku opens his mouth to speak but nothing comes out for several seconds and then he makes a choked sound and all of a sudden he is tilting his neck and offering it to the blonde. Who in turns growls and steps back in close to press his nose to the scent gland that is releasing so many conflicting smells. Rain, verging on thunderstorm, a grassy smell that gives Katsuki a sense of peace, and something uniquely Izuku. He himself doesn’t quite understand what is going on at this moment but he isn’t going to miss out on the chance to smell Izuku this deeply at such an emotionally charged moment. Maybe it is a parting gift before Deku rips him away and tells him it can never happen between them? He doesn’t realize it but he has been letting out a pitiful growl as he pulls as much of the scent into his body as he possibly can. What breaks his concentration is a watery sounding purr, he reluctantly pulls back and stares in awe as Izuku has this peaceful expression. He looks like he belongs right here always. He has a small smile and his nose is scrunched up and his eyes, his eyes look pools of Emeralds shining so brightly its like there is ethereal glow. “Sorry your nose was tickling me. My scent gland is sensitive right now; reacting to your Alpha the past few days. Um Kacchan? Did you really mean what you said? All… of what you said? Because I don’t really understand why you want want anything to do with me I mean I’m just a useless Deku right? Just being an Alpha shouldn’t cause this whole 180 for you. Y-you have always hated me, have never wanted me around.. So doesn’t it seem odd to you? That you are acting like this with me? I mean I don’t think I’ve influenced you but that has to be it right? Of course it is. I knew it was my fault and I should have stopped coming around a long time ago. I mean…” As Deku kept talking he started muttering and being this close Katsuki can really smell that Thunderstorm coming back and he has to stop Izuku from spiraling again and almost at a loss of what to do the blonde leaned into his alpha side for support and what he was getting from that was to pull Izuku closer and lightly nip at his scent gland. Doing so made Izuku go quiet but Katsuki could tell it was the right thing because he all but fell into his embrace.

Leaning up to put his mouth right by Deku’s ear Katsuki replied “I meant every word I said Izu, my alpha hasn’t changed much about me I can tell you that right now. I wouldn’t have touched you if I didn’t know what I wanted. I wanted to hate you but I never have. Why else would I have talked my Mom into getting you to be the one I get to spend my time with while they are away. I know I have been real shitty with you and I have said awful things but I wanted your attention on me all the time. I wanted you to see how strong and intelligent that I am, that I am capable of anything I set my mind to. I will admit I didn’t realize why I was doing those things but with my alpha awake it makes sense. You couldn’t see me as weak or unworthy. As for Deku it was a coincidence that I mistook your writing and thought it read like that and it played right into everything, if you’re useless then you need someone to take care of you and who better to do that than the best you know? None of this is your fault Izu. Even if I would have been a plain ass beta I would have eventually figured this out, these feelings I have for you.” Standing up to his full height which was still way shorter than Izuku’s he tilted his own head to present his own scent gland and the greenette made a pained sound and leaned down to shove his nose against it. The feeling was indescribable as Deku rubbed against it and breathed deeply. Sighing Katsuki could feel another purr starting up.

What felt like hours later a different feeling had Katsuki going stock still. Did Izuku just lick his scent gland?? Groaning he slid his hand into the green curls pressed against him and was rewarded with another lick. Katsuki couldn’t help but tighten his hands into the curls and pressing Deku closer to the gland. The smell that was wafting in the steam of shower was pure Izuku and turning more to the honey smell as seconds ticked by. While Katsuki was enjoying himself immensely with just the closeness and the licks he needed to top this before it went farther. He would break if he hurt him again. “Izu? How about we wash up and then make some breakfast and maybe watch a movie?” At this Deku seemed to remember himself and pulled away looking slightly dazed. He nodded and looked to be waiting for something. Taking a guess Katsuki reached for the shampoo that he must have placed in here when he was unpacking. Motioning for the green haired boy to turn around Katsuki worked the shampoo into his hair and each motion cause more and more tension to leave Izuku and once his hair had been rinsed and conditioned and rinsed again Katsuki asked for washcloth and grabbed his bodywash to start cleaning his Omega. The blonde started at his neck and made sure to go lightly over the boys aforementioned sensitive scent gland and started rubbing down his shoulders and arms pressing a little harder than necessary as he felt tense and once he felt the tension give he moved on to his back, the water was starting to cool so Katsuki turned it up a notch and continued on. He made sure that he didn’t linger anywhere that wasn’t appropriate and by the time he was ready to turn Deku around to wash his front the alpha was perking up at all the positive reactions he was getting from the omega but Katsuki just shushed him and continued taking care of Izuku. He could see Izuku was anticipating him to lose control but was shocked when Katsuki resisted and did the lightest of passes over his dick, balls, and his hole that was dripping at this care he was receiving from his alpha. Katsuki ignored the slick and continued rubbing down Deku’s thighs, and took care of each leg, going so far as to lifting them to get the bottoms of his feet. Once done Katsuki stood back up to his full height and tipped up to press a chaste kiss onto Izuku’s cheek. Pulling back “ Why don’t you go and find a movie and start pulling out what to make for breakfast and I’ll finish up here and be out to help you cook?” Izuku’s breath caught, his brow furrowed, and then like a light bulb went off inside his head he gave a quick smile and nodded stepping out of the shower. The blonde didn’t watch even though he knew Izuku would be drying off and probably giving a rather hot view of his honed body in doing so. Instead he sighed and turned the water up hotter. He heard the door close and let out a small whine. He was walking on broken glass to make sure Deku wasn’t going to get hurt and it pained him hat he created this mess. Forcing himself to focus he did a quick wash off himself with Deku’s shampoo and body wash, smelling like him gave Katsuki some comfort. He stepped out and quickly dried off. He realized at that moment he didn’t have any clean clothes. He had two options 1. Borrow some of Izuku’s clothes or 2. Walk out in his towel and make the greenette uncomfortable. Option 1 was a safer choice so that’s what he went with. He found a pair of boxers and a soft worn All Might shirt that he knows Izuku loves dearly. Setting his resolve he stepped out of Deku’s room and headed towards the kitchen where he heard him on the phone again. “I know Mom.. I still can’t believe you are okay with all this, I’m not even sure I am. I mean what would auntie and uncle think if they knew how I feel about Kacchan and that you support it? Surely I’d be murdered and never seen again and I mean they would…. What? What do you mean they know?! Oh gods Mom are they coming to kill me? Oh no oh no! They can hurt me all they want but they better not touch Katsuki! oh…. Uh… um what?! I don’t think I can believe that mom.”

At that moment Katsuki decided to shuffle in, loud enough to alert Izuku that he was there. “ Oh mom, I gotta go, we are getting ready to make breakfast. Yes mom, “ his face was getting rather red and he started rushing to get off the phone “I will tell him, yes, yes, okay Okay yes love you too. Bye” h-hi Kacchan, mom said hi and she loves you.” The blonde nodded in acknowledgment looking at the spread of ingredients on the counter, wondering what made Izuku blush so prettily. “Oh! I didn’t know what Kacchan wanted so I laid everything out so you could choose!” Katsuki hummed and chose what he thought Deku would like and started putting everything else back up. Once they had the food made and the kitchen cleaned they ate at the table and decided the dishes could wait till later. Making their way to the living room, Katsuki could see Deku twitching, getting anxious again. He didn’t need to scent him to understand that, he himself was a bit nervous too. They chose an All Might movie and Katsuki sat at one end of the couch and the greenette at the other. As the movie started he pulled the blanket off the back of the couch and tossed across the middle of the couch, covering them both partially. Katsuki slouched back and turned his attention to see All Might in his Silver Age.

A little while later he noticed a small movement out of the corner of his eye and looking over he noticed Deku had managed to squirm to the center of the couch and was slowly spreading more of the blanket over himself, glancing subtly at Katsuki and it probably wouldn’t have been noticed had The blonde not turned to fondly watch Izuku moving the blanket to his liking. Having been caught out, a blush started forming and making Izuku look younger than what he was. Katsuki could feel his heartbeat pick up at the sight and without thought he lifted the blanket from himself offering. Offering what? He wasn’t sure Izuku would accept and then quicker than he thought he had the pro hero cuddled into his side and tucked under his chin like he was the smaller of the two. He sighed as he smooshed himself as close as possible and Katsuki couldn’t help but start a low purr. Satisfied with how they were he turned his head back to the movie and before long the greenette was rattling off odds and ends about their favorite hero. Katsuki didn’t even notice he was nodding off until all of a sudden he heard a sound and cracked open his eyes to feel Deku slowly pulling away and digging for his phone which is where the sound was coming from. The blonde didn’t want him going too far so he sat up and pulled him back to his side as he was answering whoever was calling. “Hi Shoto, what’s up?” Was heard as he slowly relaxed back into Katsuki. He couldn’t really hear what was being said on the other end but he felt the pro tense up suddenly and started stuttering through his reply “n-no, no you did not! H-How could you Shoto! I swear you don’t think! You see an Alpha who looks interested and you lose all higher brain function, what do you mean he knows just the perfect person for me?! No! Th-That’s ridiculous, I will not answer, I can’t believe you gave a-a random alpha my phone number, we are pro heroes, this is very dangerous! I don’t care if he is a hero too, I don’t know him so this isn’t okay! No, I will not listen, I am so mad at you right now, bye!” Katsuki didn’t even realize he had responded to the green haired boy's panic until he noticed his grip had tightened, and he was letting out a low growl as he was breathing him in. The alpha was on edge with everything he was able to hear and put together on this side of the phone call. What gave that shitty extra the right to betray his omegas trust and safety. He wanted to find him and rip him apart. Breathing deeply he could smell the panic on Izuku and could tell when fear was creeping in, it smelled sour. His omega was hurting again and he would be damned if he didn’t do anything to make him feel better. He chuffed and nudged his nose against his cheek and started a low purr. Slowly, oh so slowly he could smell the sourness go away but as it did Deku started shaking and he could hear little quiet gasps, pulling back and lifting his chin he could see tears welling up as he started to cry, not fully knowing what to do since he wasn’t the cause of this hurt he cocked his head and pulled Izuku closer into his chest, tucked him in and made him small so he could feel how protected and safe he was here, in this moment, with his alpha. Once settled in, Katsuki started trailing his hand up and down the pro’s back to help soothe him. They sat like that for some time, both lost in their own thoughts.

The ring of the phone startled them both and Deku pulled it up and let out a low growl himself at the unknown number that was on the screen. Declining the call he sat the phone on the table and cuddled back into Katsuki. In what was the quietest whisper the alpha had ever heard the omega apologized for the whole situation. Tightening his hold the blonde started speaking, “don’t, don’t apologize for something outside of your control, your shitty extra has caused you distress and pain and honestly I’d like to return the favor to him, I know you wouldn’t like that though. I’m here for you. I know you have no interest in others even though you said you should be. I’m not worried but I will step in if you ask. I will do what’s best for you to show you how good I can be to you.” Deku had tipped his head back as he was speaking and Katsuki couldn’t resist leaning in and softly pressing his lips against the hero’s. Intending on a chaste kiss he was surprised when Izuku held tighter and surged up to press more firmly. He was a little shocked but slowly he slid his tongue out and swiped against his bottom lip just to see what the greenette would do, and it seemed without a thought entry was granted and he found himself suddenly sliding into the sweet mouth of his omega. He heard a whine as he twined their tongues together, enjoying the sensations he didn’t even notice when Izuku pushed him back and slid into his lap. It felt a little ridiculous with the hero being bigger than him but Katsuki wasn’t about to say anything when he felt those strong thighs straddling his and Deku’s ass coming to rest right over his dick. That was a surprise he completely forgot about everything besides the tongue he was massaging with his own until that moment and he let out his deepest growl yet, it turned into a whine when the green haired hero shifted his hips and ground onto his lap. A series of beeps brought them back from the desires that were claiming them and they realized the phone was going off repeatedly. Looking up into those Emerald eyes he could see panic and fear warring with the heat of what they were doing. Deku tucked his chin down and seemed to make himself smaller sitting astride Katsuki's lap. Not liking this one bit, the blonde pulled him closer while leaning the both far enough to grab his phone. “Let me see what’s going on Deku, let me help you. Either enter your passcode or tell me so I can…” a nervous laugh was what he was met with,”you know my code, I’m surprised you’ve never tried to get into my phone before, honestly. Hearing that, the obvious conclusion he came up with was All Might’s birthday, he tried that and it said it was incorrect. “I don’t know.” “It’s your birthday silly, I would never forget that so it was the perfect thing to use.” Looking shy, Deku tucked his head back into Katsuki's neck. He punched in his own birthday and unlocked the phone, he had a 5 messages unopened so he clicked the app open and saw they were all from a random number. Opening the thread the first message read

<—— Hi Pro Hero Deku, I’m Nighthide. Shoto gave me your number and said you’re looking for a Young Alpha. I’m 20 so that should fit the bill. I tried calling but you didn’t answer, I guess you’re a shy omega huh. Anyways I’d love to chat. Call me soon.

The second message was sent after 5 minutes

<—— Don’t be so coy, I got the impression from Shoto that you should be gagging for an alpha. I’m young and virile and I’m rising through the ranks. Let me show you a good time. I’d love to get together and show you all that I have to offer. You know you want to.

Katsuki let out a growl, these texts were not good. Saying Deku wanted a young alpha like he’s some sort of deviant. Gagging for this stupid fuck no way! Continuing on the next one was worse. Sent within the same minute

<—— Answer me Omega! Let me come over and show you what you could be having every day, Shoto said your babysitting some brat. We could have some real fun while he’s playing in his room. Dumb fuck probably wouldn’t even know what we are doing. What do ya say? Let me take care of you with my knot. You won’t ever want anyone after I’m done with you. You’ll be begging me to fill you up every second of the day and you’d be set having pups for us and you would never have to work again. Don’t you like that thought? Being bred constantly and being filled and only worrying about your next pleasure session? Here let me give a look at what you’ll get to enjoy.

The next message wasn’t even a message, it was a dick pic with a swollen knot. The blonde tightened his hold and let out a growl and continued to the next and final message

<—— I came so hard just thinking about us and what I can do with you. Be mine omega.

With a snort, Katsuki sent back a quick message before blocking the number

——> Keep your dick in your pants knot head, this is Izuku’s Alpha and if I ever see any contact from you again you can count your days, There is a reason we keep what we have private and this is an insult to me and to him. Go ahead and try me though, you have no idea what I’m capable of.

Katsuki decided to snap a picture of his huge ass hand on the back of Deku’s head where it was clutching his curls and send it as a parting gift. Thankful that he was already so big there because he knew what that picture would seem like to this fucking loser but there wasn’t enough that you could tell anything else. Letting out a satisfied sound he tossed the phone back where it was.
Using that hand that was in the green hair and lightly tugged letting Izu know it was okay now. He got a small purr in return and licked his damn scent gland. Reminding him of what they were doing beforehand, chuffing Katsuki moved Deku back to where he was sitting back on his lap up straight. Looking up into his eyes he let out a small smile and grabbed onto his hips, he gave a small thrust under the guise of just settling better and got the reaction he wanted which was pressure down and a small gasp.
“Izu, are we going to do this? Are you going to accept me as your Alpha? I need to know. I know I’ve still got 4 years till I’m 18 and if you demand I wait I will but I need to know before I get a true ta-taste.” “This feels so right Kacchan, but how can we? It’s so wrong! I am a pro hero and an adult. What would everyone think? I’d be labeled a villain. I would be blacklisted and would never be able to work again.” Izuku slid off of Katsuki’s lap and looked away as he stood up to his full height. “I, I’m just so confused, you shouldn’t want this and neither should I!” With that he headed towards the kitchen and the blonde could smell the sadness wafting off of him. Deciding to let him be for a while he went up to his room and realized that he had missed a few calls and texts of his own. His mom called him a few times and he had a text from his dad congratulating him on presenting as an alpha like his mom. Kiri texted a few times just about stupid shit. Letting out a sigh he decided to call his mom back. After a few rings she picked up, after his usual greetings to the hag, she busted his balls over being an alpha like she was and that she was proud of him and he better not end up a knot head because she would beat it out of him if he was. Hearing that he thought of the texts Deku had gotten and he must have let out a sigh, all of a sudden his moms tone changed and she asked how everything was going with Izuku watching him. He let out a growl and she snapped at him that he will not disrespect him or talk to her that way. With a huff he started talking and quietly he told her how his alpha wanted to claim Deku and he thinks he wants that too. Laughing was all he heard and as he threatened to hang up she stopped “well kid I had a feeling this was bound to happen, how does our darling Izuku feel about all this?…. Honey! Please tell me you didn’t do anything stupid! Did you hurt him?! I swear to god if you hurt him you will not live to see another day once I get back!” Letting out a long breath, the blonde told her everything. How Izuku seemed to want this and that they were doing okay for the main part but he hated how young Katsuki was and he was being eaten up by guilt. How the blonde has been offering Izuku an out even though he knew it would tear him up if he decided he wasn’t worth the effort. He opened up and told his mom that he got overzealous after just presenting and Izuku wanting to leave that he had ended up pleasuring Izuku and he thought everything was okay after and now he just doesn’t know where he stands. He’s terrified that he’s going to lose Izuku forever after just fully realizing what he meant to him. “Katsuki… I am, no… we are so proud of you and you are doing the right thing here, just lay all your cards on the table and really listen to him. In the end it is his choice if he accepts you, let him know that if he chooses to be with you we fully support it! We have always seen the pure love he has for you yes the rest of the world may not understand but it is truly none of their business! You two can keep it quiet until the time is right. You don’t have to hide yourselves from us or from auntie Inko. The ball is in his court now. Treat him well whatever he chooses. And Katsuki? We love you.” With that they said their goodbyes. Once off the phone he decided to reply to his dad and to kirishima. After that he decided to lay down and just think.

He had no idea how long he truly stared at his ceiling but he was roused by a light knock on his door and Izuku calling out that he made lunch. Using all his willpower Katsuki got up and made his way to the kitchen. He was surprised at all the food laid out. Izuku made all of his favorites and he could smell the spices so he knew it would have heat in each bite he took, regardless of seeing all this Katsuki felt a pit in his stomach and just knew this was a rejection dinner. Feeling dejected he took his seat and gave a small thanks. He kept glancing at Deku but he never looked back, he had a constant flush to his face and the blonde couldn’t tell if it was just because of the spicy food or not. After they ate they picked up the dishes and Izuku quietly asked if Katsuki wanted to help clean up. Perking up a little bit he stood to the side to rinse and dry off as the greenette washed. At the end Izuku was standing so close he could feel his body heat rolling off of him. “Ka-Kacchan?” “Yeah? Izu?” “I uh I read what you sent that creep.” The blush on Izuku returned in full force and he couldn’t look at Katsuki. “Sorry if I overstepped but it was clear how you felt about some rando trying to talk to you and I wanted to help.”…. Feeling smaller than he ever has before, he was suddenly turned to face the hero directly and a hand on his chin lifted till he could stare directly into shimmering Emeralds, Katsuki lost all train of thought staring into them, into the face of the omega is alpha insisted was supposed to be his. Pushing that thought away he just kept staring. Izuku moved his hand to cup his cheek and started swiping his thumb over his cheekbone. Standing there in this hold Katsuki could feel the age difference and how mature Izuku really was. Understanding flashed in his eyes and the greenette leaned in and got right by Katsuki’s ears, “Katsuki what you said made me fall even more in love with you” he kissed the shell of his ear and pulled away to where he could meet the blonde’s blood red eyes, “I can’t let you go. I will probably war with myself a lot about this whole thing but I can’t risk never experiencing everything with you, side by side like you said. That is, if you’ll still have me?”

It was like the ground opened up underneath him. Katsuki’s knees felt weak and his heart started jack hammering. He was sure the other could hear it. He was at a loss for words so he just nodded dumbly up at Deku and got to witness the brightest smile he’s ever seen fill out his omega’s face. His eyes seemed to glow with the joy he was feeling. Finally finding his words he started “ Izu I would love nothing more than to be with you, to be with you every step of the way and fight alongside you to save the day. I uh I even had a chat with my mom about everything” at which Deku lost color in his face and started to pull away, Katsuki held on to him and continued “ no, it’s okay! Truly, she sends her love and she told me not to hurt you and to let you decide how this goes. That no matter what we are loved and our families expected this to happen some time honestly.” He chuckled, “so do you want this with me? To be my omega, my uh boyfriend, the nine yards?” Now it was Izuku’s turn to just nod dumbly, he took a breath and all of a sudden he was down on his knees, arms to his sides, and head tilted so he could gaze up at the blonde. Holding eye contact he presented his scent gland to the blonde. The alpha knew what this meant and slid down himself so he was more level with his omega. He leaned forward with another glance at Deku to make sure he was still okay with this. When no objection came he pulled him to his chest and used his hand to tug the curls and angle his head more to his liking. Once he had his scent gland out in the open he closed the distance and started lapping at it. The taste was divine and soon he was sucking and nibbling at it. He could feel heat settling in his groin and knew he wanted to do so much more with Izuku. Slowly he pulled away but not without placing kisses on the now swollen gland, with a groan he stood up and helped the green haired boy up as well. He stretched up and gave him a quick kiss before taking his hand and leading him to Katsuki's bedroom. He urged him to sit on the edge of his bed. “Make yourself comfortable I’ll be right back Izu” with that he stepped into his bathroom and grabbed the fluffiest towel he could to lay down underneath them. Returning he stopped dead in his tracks as he took in the sight before him. Izuku hadn't noticed him coming back and was currently scenting everything on his bed. Seeing him in his own world doing what he wanted was a sight to behold and Katsuki didn’t want to interrupt. His alpha stated that this was good and the omega was happy. At some point the pro had started a soft purr which cut off unexpectedly when he flopped on his back and caught sight of the blonde staring at him. He chirped and the alpha responded by walking up to the bed. “Kacchan’s bed smells so good, smells like Kacchan, I uh couldn’t help myself…” the blush ramped up and Katsuki was powerless as he whined and lurched forward to meet Deku’s lips with his own. It was like what had happened between them the other night never existed and Katsuki was overwhelmed by everything he wanted to do. He let his inner alpha guide him as he pushed Izuku to lay back down and he climbed over him and placed himself between his legs, grabbing those thighs and lifting so he could shift a bit closer so they would be able to feel each other as he leaned forward to catch his omega’s mouth again.

He lost himself in the kiss and soon he was shoving his tongue in and out, giving Izuku a taste of what he wanted to do with him. Slowly he noticed that the damp spot on his jeans was getting wetter. Leaning back he could see that Izuku was already soaking through his own jeans and onto his. He groaned and let out a very soft “fuck” which the omega responded to with a whine and he ground his hips back against Katsuki’s lap. “ mmph please alpha?” The blonde shuddered hearing that. He urged Izuku up so he could pull his shirt over his head and throw it somewhere across the room. Exposing Izuku’s chest to the light of day, he took his time to really take in all of his scars along the sculpted lines of his body. God he wanted to just pound into him and blow his load but he would be patient. He needed to show Deku he would never want for more when he was with him, with that thought Katsuki ducked down and lapped at his scent gland again eliciting a high pitched whine with how sensitive it was. Smirking against his neck he started to trail kisses along his scars and making his way to one of his nipples. Laving it with attention he was pulling all sorts of sounds from the omega he pulled back just enough to blow cool air across it and see it tighten further, the other nipple soon received the same attention. It seemed like Izuku was surrendering to his omega’s instincts as he started whimpering from the attention to his chest and his hand shot down to touch his dick, he was a good boy though and just pressed against his bulge with the heel of his hand. His hips seemed to buck of their own accord and grabbed Katsuki's hair and pulled him back up, showing that even though he is an omega he is also a pro hero and has more strength in him than he lets others believe and god wasn’t that hot?! Being manhandled by his omega. With a growl he pressed into Izuku’s mouth trying to devour him.

At this point he couldn’t tell you how much time has passed but he could tell that they were both ready for more. He didn’t think that his cock could take much more of the wet fabric between them so he pulled away reluctantly with a pained growl and Izuku tried to catch his mouth again as he did. Those Emerald Eyes were overtaken with lust and Katsuki could barely make out the color, sighing he shimmied down so he could smell more of that delicious scent that was overtaking every other smell in the room. The blonde’s hands were shaking as he urged the jeans and boxers down. He was absolutely soaked already. Taking a deep breath and making sure Izuku was still on board with everything, not seeing any signs of discomfort or rejection, he focused on the feast before him. He licked up the rock hard cock that was nestled into green curls, paying special attention to the head to get more of the salty taste on his tongue. Not wanting to make the greenette come just yet he made sure he was moving slow and not stimulating too much as he brought his hand down to the plump balls that were covering the omegas hole from his view. He was almost about to pull away so he could wet his fingers when he realized their would be no need. Izuku is so wet he probably doesn’t even need prep but Katsuki would be damned if he didn’t prepare his omega. Yes he was younger but as an alpha he knew his dick isn't anything to be shy about and it was more girthy and lengthy than most hes seen in porn. He slid one finger in as he started laving attention to Izuku’s cock again and the whine that tore from his omega’s lips was divine. He couldn’t wait to see what other sounds he could pull from him. He was so focused on that, that it took a minute for him to fully feel the tight, wet, heat, that was pulling his finger in every time he slid out to pump back in. Groaning against the slit he was trying to suck on he pulled out and slid in a second finger with the first. A high pitched keen was what he received for his efforts. He spread his fingers and Deku started grinding in earnest to take his fingers deeper. “Pl–pleeease Kacchan I’m ready!” “ready for what Izu? Use your words. I need to hear you say it.” “Fuck me Katsuki please?!” with that he tilted his hips to get his fingers as deep as possible as he whined. Looking up, the blonde could see he had tears in his eyes. Biting his bottom lip he shushed him as he got off the bed listening to Izuku’s whimpering from the loss of his fingers as he removed his own soaked jeans and got back up on the bed and into position. He took a moment to admire his omega, flushed so pretty as it crawled down his chest. “Alpha? Do you want me to present for you??” Hearing that his alpha howled within, but Katsuki just shook his head, “No, not this time. This is about you and me, not Alpha and Omega. I am going to stare into your eyes as I take you apart. You’re going to know it’s me fucking you, making love to you.” That said, lifting the pro hero’s thighs so he could pull him to sit against his lap, he nudged the head of his neglected cock to Izuku’s entrance and paused, giving him another chance to back out.

Izuku didn’t want another chance to back out it seems. He wrapped his legs around Katsuki and pulled him forward without warning. Both let out growls at the overwhelming feelings. Katsuki fell forward as he tried not to prematurely end it all and he was just tall enough to knock his head to Deku’s collarbone. He started mouthing and nibbling while Izuku adjusted to the intrusion. Soon enough he could feel his hips start moving minutely. He couldn’t help the bite he gave his chest as his hips jerked of their own accord. The greenette responded by tightening up and whimpering. Seeing that for the sign it was, he pulled his hips back and slowly slid back in. He slid his arms underneath the man below him and held on as he started thrusting in earnest. Tilting his head so he could look at Izuku he was met with green eyes staring back at him and arms pulling him closer. It made it hard to move but he wouldn’t trade it for the world. This was the quietest he has ever seen Deku save for all the sounds he was making that it seemed like he wasn’t even aware of. “ H-hey Izuku? I forgot to ask, Ha-have you ever done this before?” the blonde didn’t even know where that came from, but all of a sudden he needed to know. Not letting up on the motion of his hips he pulled back to where he could look more intently in his omega’s eyes. It didn’t seem possible but Izuku looked shy and more flushed than he has ever been. “No-ooo- oh Katsuki I have never been with anyone like this before……. I-I-I I’m sorry”. Breath hitching and surge of protectiveness going through him Katsuki pulled back to where he was on his knees and grabbing Izuku’s thick thighs. Growling he started really pitching forward and picking up his pace. To know that he was his Omega’s first, that they were both experiencing this for the first time. They were both on the same level with this. He couldn’t help that he was going harder, He wanted to bring Izuku such explicit pleasure. As he was fucking him he brought a hand down and started tugging his omega’s cock in time with his thrusts, he repositioned his knees and folded Izuka a bit more in his lap and all of a sudden the Omega screamed out and really started trying to meet his pace hit for hit. “Ri-right ther-ohhh yes yes yes Katsuki!” he gave a full body shudder and even more wetness spread as he came. His cock jerked feebly in the blonde’s hand and feeling his omega’s body tighten up so suddenly caused his own release to follow it was so quick he barely got his knot inside before it was too large and he was releasing inside and painting his walls with his seed. He slumped forward and placed kisses along where he had bitten him earlier. Once he got his breath back he sat back so he could move Izuku’s legs to one side and maneuver them to a more comfortable position while they waited for his knot to go down. As they waited he left kisses where ever he could reach. Generally he doesn’t care about his height but he can’t wait until he’s at his full height so he can properly hold his omega. “Hey Izu? Are you alright? How are you feeling?” “Izuku turned his head so he can see him out of the corner of his eye, “I’m alright, that was just a lot to take in. I feel satisfied, happy that we did that, b-but Kacchan? Why didn’t you bond with me? Do you not want me as your mate?” “No Izuku! I want to be mated with you, but, I wanted to prove it wasn’t all about me being an alpha and you an omega. That I wanted you, as you are. Not just the omega, and… this is just a minor thing… I uh I can’t reach you neck while I am in you.” glancing away from the hero he could feel his face heat up. Cursing his young body again. “Oh Katsuki… that’s okay I mean if you still want to You could bond with me once your knot goes away?” The blonde could feel him tense and in turn squeeze his know where it is still trickling out more seed, pulling a moan from him. “Ha- ahh if you keep that up i may never be able to leave your heat.” he closed his eyes and clenched his jaw against how sensitive his dick was, still buried in the tight warm hole of his lover. Hips giving an aborted thrust as he willed himself to calm back down. After what seemed like years his knot went down and as he slipped out he could feel his cum flowing out. He knew it would be a lot but it seemed never ending. Slowly he pulled himself higher up behind Deku so that he appeared taller and could angle his head properly to bite his mate. Breathing deeply he savored Izuku’s smell. He placed featherlight kisses over the gland and all around, turning Izuku’s head so he could make sure this is what they both wanted, all he saw was love. He gave a kiss to his cheek and moved back down, he swept his tongue across the gland before he bit down and clamped with his alpha howling for joy in his mind. The greenette shivered and let out a delicious noise and then cried out softly. Katsuki used his tongue to swipe away the blood and lavish more kisses. Izuku growled rather harshly and before the blonde knew it Izuku had flipped to where they were facing each other and he pulled Katsuki’s hair so he would told his own neck in offering, the teen won’t admit how hot that got him but he couldn’t help the sound he made. “Can I bite Kacchan back? I und-understand if Kacchan doesn’t want it. I-I’m not that great and Kacchan deserves the best!” He started tearing up and Katsuki would not stand for that, “damn it Izu! You are the best! Bite me right the fuck now!” Taking a small breath, Izuku leaned forward slowly and tentatively liked across the blondes scent gland for the first time and immediately saturated sucking on it and he moaned. Katsuki didn’t get a warning before pain and pleasure erupted from the spot over the gland his omega bit. It took his breath away. Once done, they settled beside each other and fell asleep.

A few weeks later.

To say their parents were ecstatic would be an understatement. They were given bond rings and some gifts and Katsuki's parents had talked with Auntie Inko and decided to gift him and Izuku their own apartment so that way they could still be together while Katsuki finished school and Izuku could continue his hero work. Izuku and Katsuki both felt like that was moving a bit fast but they couldn’t deny that having their own space to learn and grow their dynamic in will be perfect. They didn’t plan on going public for a while but there were already rumors about Deku’s mystery alpha and his claim mark wasn’t hidden so he was really in the public eye right now. Katsuki could tell it made him feel nervous and guilty. They couldn’t be happier with the apartment though. The whole complex was owned by the blonde’s parents and everyone who lived in it had been vetted before allowed entry so they never got bothered in their home. It was truly a safe space. At this moment though, Katsuki couldn’t be any happier than he was laying in between his omega’s legs and showing him how satisfied he was with him.