Chapter Text
An immediate problem had become apparent as soon as Izuku and Aizawa decided to leave the restroom to go back to the hotel: namely, there was no chance Izuku could go that far without dripping embarrassing amounts of quirk-lube slime down his legs. Not in what he was wearing. (He'd have to come up with a reason to throw the skirt and thong away. They weren't even his - and sure, Yaoyorozu wouldn't want the thong she'd made for him back, but Ashido was expecting her skirt back. Unfortunately, no amount of washing could let him give it back without dying on the spot of shame.)
(...Did he really have to throw them away? Maybe he could just hide them somewhere and tell Ashido he'd had to trash it.)
(...He couldn't really toss out the clothes he'd been wearing when he fucked his first pro-hero. No hero otaku worth the name could ever get rid of such prime merch. Yeah, he'd have to hide them somewhere safe.)
Back to the issue at hand. The girl with the sex quirk had maybe been underestimating just how strong her quirk was when she'd warned them what would happen. (She should probably go back to quirk counseling, Izuku thought absently, reaching for another wad of toilet paper to wipe his inner thighs, I'd bet her quirk's gotten stronger since she last tested it - probably before she hit puberty. Then again, maybe she mostly uses it on herself, and it has different effects on male and female bodies? If that guy was actually her boyfriend, they'd have a better idea, unless she doesn't use it on him...)
Aizawa cut off his train of thought, still staring down between Izuku's legs, which made him flush. He dabbed a little more at the slick sliding between them. His teacher sighed, tapping his phone against his hand rhythmically. "I'll go out there and wait for Kan to pick up your classmates, then see if I can buy you some pants. I... why did you even wear that today?"
Izuku flushed even deeper. "The girls told me I looked cute," he muttered.
Aizawa raised one eyebrow and hummed. "Well..." he trailed off, then quirked an appreciative lip. Butterflies took flight in Izuku's stomach. "Normally, I'd say this is way too inappropriate to say to a student, but we're well beyond what's appropriate by now, anyway. It's a good look on you, Midoriya - but maybe don't wear it on a class trip again, alright?"
"Uh-uhm yeah," Izuku stuttered out in agreement. Holy shit, Aizawa thought he looked cute - These were unhelpful thoughts. Also, there was no way he'd ever be able to wear a skirt or thong ever again without thinking about sitting on his teacher's dick. So maybe he'd never be wearing them again ever. Outside, at least.
Izuku sat down hard on the toilet after Aizawa left. Then, he shot back up again, yanking the thong down to his ankles, sighing with relief as it freed his cock - which was already getting hard again. Quickly, he evaluated whether he could jerk off before Aizawa came back - but there was no way, not when he'd already come not five minutes before. And then Aizawa would come back and find him with his skirt pulled back, hand on his dick - but maybe he'd like that -
Izuku very firmly took his hand off his dick, pulling his skirt over it so he wouldn't have to look at it. No way. Just the thought of that made him want to combust. Instead, he pulled out his phone - which was already filling up with notifications from his classmates. He stuck it back in his hoodie pocket.
That was how Aizawa found him, fifteen minutes later, when he returned with a plastic bag carrying a new pair of pants. Izuku scrambled up, kicking the thong away, to open the door for him.
Quickly, Aizawa stepped inside, shutting the door behind him. He cast a glance up and down Izuku, then immediately clocked the discarded thong on the floor.
"Sorry, couldn't find any underwear for you," he said, voice kind of rough.
"That's -" Izuku's voice broke, and he swallowed, trying again. "That's fine." He took the bag from his teacher, stepping back to change - but Aizawa didn't look away, like he'd half expected him to. Instead, he leaned back against the door, crossing his arms, eyes hooded and watchful.
This was fine, right? They'd already had sex, after all. But even so, he hasn't seen you naked, a small voice in the back of Izuku's brain whispered, which he silenced. It was fine, he decided, even though the entire situation made him feel a little floaty. Carefully, he stepped out of his shoes, leaving his socks on. Then he paused a moment to consider - glancing up through his eyelashes at his teacher, who didn't move an inch - and instead of pulling the pants on underneath his skirt, he set the plastic bag on the ground, then reached for the button of his skirt.
The sound of his skirt hitting the floor seemed to echo in the bathroom, for all that it was just fabric colliding with the tiled floor with a quiet thump. It was the same as he reached into the bag for the pair of jeans, the plastic rustling loudly in the silent room as he pulled them out. Izuku's hard cock pressed against the hem of his hoodie as he stepped into them, and he knew Aizawa was looking directly at the bead of pre-cum dripping from his tip as he did it. Izuku tried to get his breathing under control as he zipped up the black jeans, shifting against the tacky feeling where it pressed to his sticky thighs.
Aizawa cleared his throat as Izuku shoved the soiled skirt into the bag. "Right," he said, "let's get going then."
It was as he was leaving the family stall that Izuku realized he'd forgotten the thong on the ground. When he turned back, though, he caught a glimpse of Aizawa shoving it into his pocket, before the man set a guiding hand at the small of his back, pushing him onward.
They made quick time back to the hotel, saying nothing as they hurried past the reception to the bank of elevators. While they waited for their floor, Izuku shifted on his heels, considering saying something - he didn't know what, anything really - but when he looked up, he found Aizawa staring blankly at the small camera in the corner of the elevator. Izuku quickly looked back down at his feet, shifting slightly away from the man.
It was a different story, however, when they reached Aizawa's room, the man guiding Izuku past the room he shared with Mineta. (Unfortunately, room assignments on this trip were assigned by seat number. Or Izuku would be sharing with literally anyone else.)
Aizawa swung the door shut, then reached out and grabbed Izuku by the shoulder, shoving him back against it. Izuku gasped, gaping up at him. Were they not going to -
"Here's the thing, problem child," Aizawa again cut into Izuku's thoughts, speaking quickly, voice low. "I do actually like my job, all evidence to the contrary notwithstanding. Also, I don't want to go to prison. So what happened today -"
"Wait," Izuku blurted out, interrupting him. "Wait, I wouldn't - you didn't think I would tell anyone, do you?"
"Would you?" Aizawa asked, still whispering. For the first time, Izuku noticed that above Aizawa's eyes - clearly blown wide, Izuku could see, as close as they were to his own - his eyebrows were drawn in what Izuku finally recognized as anxiety. A cold little ball of lead settled in Izuku's stomach.
"No!" Izuku objected. Aizawa still didn't let up where he was holding Izuku against the door by his shoulders. "No way! Besides, it was an accident -"
"No one would ever believe that was an accident," Aizawa objected. Which, yeah, Izuku had to agree. Really officer, I slipped and sat on his cock, I promise I didn't mean to -
Izuku shook that thought away. His own anxiety rapidly growing, unconsciously he reached up and hooked his fingers into the hem of Aizawa's shirt.
"I - I promise... I'm not going to tell."
Aizawa stared down at Izuku, eyes searching. His grip on his shoulders let up slightly, and he heaved a great sigh.
"Look, I believe you, kid, but I -"
Abruptly, a bubble of indignant rage formed in Izuku's chest. "No! No way would I tell anyone! You're, like, my second-favorite teacher, not to mention if you got in trouble for this, you'd have to stop working as Eraserhead, and the gap that would create in Underground coverage alone would..."
Izuku trailed off as Aizawa let go of him, leaning against the door as a low chuckle tumbled out of his mouth. "Alright, alright..."
A thought occurred to Izuku, and tentatively, he asked, "I mean, it's not like you're fucking any other students, are you?"
"No," Aizawa denied, a hint of hysteria in his voice. "No, I promise I am not fucking any other students. Or anyone else, for that matter."
Still laughing, Aizawa backed up the three steps to the room's sole double bed, collapsing onto it. Izuku trailed after him, pulling a little self-consciously at his sleeves.
"So... it's fine then?" he asked, a little hopefully.
"For a given definition of fine," Aizawa conceded.
"Oh, good," Izuku blurted out. "Because I really liked it. Can we do it again?"
Aizawa's laughter turned disbelieving. "Look, problem child..."
Izuku flushed in shame as he realized what had come out of his mouth. Oh god, and now Eraserhead was rejecting him -
Aizawa's surprised tone softened. "Midoriya... just because you liked it the first time doesn't mean you'd like it the next time... it - more than likely, you're going to wake up tomorrow and regret what already happened, too. I'd be taking advantage of you..."
Despite how his cock still throbbed in his pants, Izuku deflated. Would he really regret it? Well, maybe. There'd been plenty of things he'd enjoyed doing, then regretted in the cold light of the next morning...
...But still, the thought of fucking Aizawa got him so hot... And he fantasized plenty, alone in bed in his dorm room, where Aizawa had made more than a few appearances in his thoughts... When else would he get this chance?
Aizawa nudged the toe of his slipper with his own. "Come on, problem child, you're probably uncomfortable in those jeans. Let's get you in the shower so you can clean up."
Izuku acquiesced to being led into the hotel room's bathroom which, he noted, was double the size of the one he shared with Mineta. The shower stall was one of those fancy ones with no door, just a pane of clear glass separating the half with the faucet from the rest of the room, which was all done in white stone tiles. The toilet was set aside in a small closet but, Izuku realized, the wall separating the bathroom from the rest of the hotel room was actually just a half wall with wooden shutters that could be closed to block off the rest of the room. If those shutters were left open, as they were now, there wasn't a single place in the room Aizawa could be where Izuku wouldn't be visible in the shower to him.
Aizawa seemed to be doing the same math next to him. Despite his previous denial, when they glanced at each other, neither broke their silent stalemate and suggested the shutters be closed.
Maybe, Izuku figured, maybe Aizawa didn't want to fuck him again... or at least didn't think it was a good idea... but just like in the family restroom stall... maybe he did still want to watch. Izuku turned away in an attempt to hide his cherry-red blush at the idea, heart pounding, and accidentally met Aizawa's gaze in the mirror, where the man was watching him intently.
Aizawa cleared his throat. "Here, kid." He pulled down a towel and handed it to Izuku, then turned on his heel and went back to the bedroom. Izuku buried his face in the soft towel, trying to calm down his blush. When he lowered it, he saw Aizawa had settled on the bed with his phone - with the shutters still open.
Izuku's immediate thought - which he banished - was that Aizawa planned on filming him in the shower. But that would be stupid, so stupid - he's already worried about getting in trouble for this, no way would he keep a video of a student naked on his phone -
But for a second Izuku imagined it: going to class, knowing that at any time, Aizawa could have been jerking off to the video of Izuku, then having to sit there with the rest of his classmates, who would have no idea about what Aizawa had done, about what Izuku knew Aizawa had done -
Well. He was already going to have to go and pretend to be normal in class, all the while knowing what it felt like when his teacher's (huge!!!) cock pressed up against his prostate. He could definitely settle for that reality, rather than fantasy.
Holy shit, he'd had sex -
Right, now Izuku was just standing there like a crazy statue. Time to get a move on.
First, he pulled his phone and his wallet out of his pockets, setting them on the counter. Then he stripped off his hoodie and t-shirt, which he - insanely - contemplated folding for a moment (still trying not to look back at Aizawa) before he dumped them in a pile next to his phone. He toed off the hotel's slippers, leaving them underneath the sink. Then - the sticky part.
He backed up a little from the sink, thumbing the button of his new, already ruined, jeans. The entire time, he'd been trying not to think about how he was still leaking, but there was no avoiding it now. God, he probably smelled, too. His cock, too, was somehow still hard, though less so than it'd been in the public restroom. When he undid the zipper, pulling the jeans down a little bit, he sighed in relief as it popped out. A line of precum still dripped from the tip, and the entire thing was faintly shiny, covered in its own fluids. Izuku gave in and swiped a hand over it - mostly to wipe it down, but he couldn't contain another sigh of relief at the feeling.
With some difficulty, he managed to pull the jeans the rest of the way off. The slick sliding down between his legs had practically glued the jeans to him, and as he hopped a little to kick them off his ankles, he still felt unmistakably slippery. Then he glanced up and accidentally caught Aizawa's eye.
The man didn't even try to pretend he hadn't been watching. Izuku swallowed. Then... well. He'd probably think back on this in the morning and want to die of shame. But in the moment, that spark of bravery he usually only felt during villain fights took hold of him. If Aizawa wanted to watch, Izuku would give him something to watch.
He slid one hand down his stomach, over his abs and the sparse trail of hair descending from his bellybutton, taking hold of his cock. Then he jerked it, once - twice - thrice - wow, all the lube on his hands made this feel really nice, he'd have to figure out some way to get a bottle into the dorms - until his cock was fully hard. Aizawa's gaze followed his hand the entire time, unblinking. Then, satisfied, Izuku turned and stepped into the shower stall. Which is when he realized he had no idea how to turn on the water.
Izuku spent about three seconds panicking at the uncooperative showerhead, before giving in.
"Uh, sensei? Can you, uhhhh, come here a moment?"
Izuku spent the additional three seconds it took Aizawa to reach him breathing deeply, trying to control his anxiety. Yup, the brief moment of bravery was definitely gone. Holy shit, had he just jerked off at his teacher? He was overcome with the insane, embarrassing urge to cover his erection with his hands, which he solved by crossing his arms in front of him.
"What is it, Midoriya?" Aizawa asked, voice rough.
Izuku gestured a little futilely at the shower's controls. Luckily, Aizawa got the message and directed Izuku how to turn it on. But when he did, the water immediately blasted out, scalding hot, sending Izuku scrambling backwards - directly into Aizawa, who wrapped one arm around Izuku's waist to keep him from tripping directly into the wall.
"Shit, ow," Izuku hissed.
Aizawa grimaced, a little abashed. "Sorry, it's - I like hot showers, it's probably my fault," he apologized. A shiver raced up Izuku's spine at the feeling of the man's chest rumbling behind him.
They untangled, and Izuku realized that he'd managed to soak the front of Aizawa's shirt in his mad scramble. Between that and his pants - already ruined, probably just as stuck to him as Izuku's had been - Izuku wasn't the only one in need of a shower.
"Sensei?" Izuku ventured. "You might as well get in the shower with me. We both need to clean up..."
Aizawa sighed. "Midoriya, I'm trying to..." He trailed off. Trying to keep the situation appropriate? Izuku could've laughed. Here they were, Izuku practically hanging off Aizawa, his hard cock jutting between them - he'd just given the man a strip show, for crying out loud, after sitting on dick in public -
Aizawa seemed to be going through the same checklist. "Yeah, okay." So saying, the man reached behind his head, grasping the collar of his shirt, and pulled it off in one go. Izuku immediately had to repress the urge to reach out and touch the sparse scattering of hair across his teacher's chest.
Izuku couldn't help it - he watched raptly as Aizawa took off his own pants, kicking them away. His teacher's cock hung heavy and half-hard between his legs, larger than Izuku's, who wouldn't consider himself small. (One of the few things Kacchan had never been able to use as ammunition against him.) Izuku backed into the shower stall to make room for him, suddenly realizing that the stall - which had seemed practically airy before - felt almost cramped now that Aizawa had joined him in it. Aizawa reached over him, lowering the water temperature to something bearable.
When Izuku didn't make the first move to start washing (he'd admit he was still staring at his teacher's cock; that thing had been inside him) Aizawa reached up and pumped a handful of body wash from the complimentary soaps the hotel had built into the wall. But, instead of washing himself - he lathered his hands, then ran them over Izuku's shoulders, down his pecs, swiping his nipples.
"Do you mind?" Aizawa asked lowly, barely loud enough to be heard over the shower. Mutely, Izuku shook his head. He held himself still as Aizawa gathered another handful of soap, then reached out and took Izuku's right arm, lathering it down, calloused hands scraping lightly against Izuku's scarred skin. When he reached Izuku's wrist, he took his hand and splayed it open, then slid his fingers between Izuku's own, soap slipping into every crevice between their clasped hands. Unconsciously, Izuku leaned towards him, the floaty feeling returning as Aizawa did the same to his left arm.
"Turn around," Aizawa murmured, and Izuku immediately complied. The warm shower spray ran over his chest, soap lather sliding down his front as Aizawa massaged more body wash into his back. Izuku sighed deeply at the feeling, reaching out to lean against the tile to stay upright.
He gasped as he heard Aizawa's knees click, looking back over his shoulder to see the man squat down behind him. Butterflies rose in his stomach as Aizawa ran his palms over Izuku's ass, thumbs swiping close to crack, but not parting it.
"Do you want me to stop?" Aizawa asked. Izuku shook his head fervently, and on the next swipe, Aizawa's thumb ran between his cheeks, over his hole. Izuku breathed in a stuttered breath, and Aizawa did it again.
"You still have some of my cum in you," Aizawa muttered, holding one hand up to show Izuku. Izuku had to reach out and brace himself with his other arm to keep from falling over at that.
Izuku watched, feeling halfway outside of his body, as Aizawa gathered up soap suds from his back, then scrubbed a hand first down one thigh, then the other. He reached up between Izuku's legs, softly cupping his balls, massaging soap into his perineum. He spread Izuku's cheeks again - Izuku could feel his hole stretch as his teacher's thumbs pulled him apart - and Izuku wondered what exactly he was seeing. Was there a trail of cum sliding out of him? (He immediately called up the image of a porn video he'd seen of a man, bent over, with cum dripping from his abused hole, down his perineum, over his balls, and Izuku's cock jerked at the idea that he could look like that.) Or was it just more of the quirk-lube slick?
Aizawa pressed one thumb against his hole again, and Izuku felt it slip inside.
"God, you're pretty," Aizawa muttered, and a high-pitched moan escaped Izuku's throat against his will.
Abruptly, Aizawa stood up, and Izuku staggered. Gripping him by the hips, Aizawa manhandled him out of the shower spray, then pumped another handful of body wash into his palms, which he ran perfunctorily over his chest, between his legs, and down his thighs. Then he pumped his cock twice, washing it quickly, while Izuku gaped at him. A little thread of disappointment grew in him - just then, he realized he'd been hoping to wash Aizawa the same way his teacher had washed him - which was immediately banished to the "no thoughts, head empty" place as Aizawa reached over, pumping Izuku's cock the same way, cleaning him up.
Izuku could feel a new gush of slick slide out of his hole and down between his legs. He crowded against Aizawa, his hands settling on the man's chest while, for one brief, glorious moment, their cocks rubbed against each other, rambling, "Sensei, sensei -" but Aizawa stopped him by grabbing him again by the hips, holding them apart.
"I really don't think you know what you're asking for, kid," Aizawa said softly, but Izuku shook his head. No, he totally knew what he was asking for.
He told Aizawa so. "No, sensei, I really want you to fuck me." Aizawa sighed deeply through his nose.
A little exasperated, he countered, "No - it's not going to be like messing around with one of your friends, Midoriya - it's - shit - you can do the same things with different people, and it'll feel different - I don't know how else to explain it -"
Izuku furrowed his brow in confusion. "But I haven't done anything like this with any of my friends? What does that have to do with anything?"
"Oh my god," Aizawa muttered.
Izuku may have made a mistake, because at that, Aizawa let go of him, stepping back.
"Wait - sensei -" Izuku objected, but Aizawa fended him off with a hand while his other pinched his brow.
"Midoriya - I - god. Are you a virgin?" he asked seriously.
Izuku flushed to the roots of his hair again. Horrifyingly, he felt the familiar feeling of tears welling in his eyes. He didn't really like where this conversation seemed to be going, and the urge to cover his erection with his hands returned.
"I - not anymore?"
"Oh god, please don't cry," Aizawa practically begged. Izuku swiped his eyes, lips pressed together as he tried to hold back more tears. "Really, I'm sorry, I didn't mean to make you cry, it's okay -"
Izuku had felt a lot of humiliation in his life. But this was rapidly climbing to the top of his "Top 5 Most-Embarrassing Moments" list, and the worst part was that he really hadn't anticipated it going this way. Which was stupid, considering the utterly absurd situation he'd not just found himself in, but walked nearly directly into.
Hovering in a way that nearly reminded Izuku of his mother - extremely out of character for his grumpiest teacher, and the association only made Izuku's complete embarrassment worse - Aizawa bundled Izuku into a fluffy white towel, shut off the water, and guided him to the bed. Aizawa, his own towel wrapped around his hips, sat on the edge, offering tissues.
"I'm really sorry," Izuku blubbered, wiping his face. "I promise I'm not really that upset -"
"It's okay if you are, Midoriya, I'm sorry, too," Aizawa consoled him. The man was looking at him with what Izuku registered as his 'consoling crying victim' face, which really didn't make him feel great. Or sexy. "I just meant, I figured once we put all you kids up in those dorms, it was only a matter of time before you'd all start messing around with each other. That's why we moved up the talk about consent from the second-year curriculum."
"The 'don't rape each other' speech?" A chuckle burst out of Aizawa. "Well, that's what we all called it," Izuku confessed. "Sorry, I just - I don't think anyone's actually been, like, getting up to anything, as far as I know. I mean, Kaminari kissing Jiro was big news."
"Huh," Aizawa shrugged. "Kids these days." Izuku burst into giggles at his deadpan.
"I do still want to, um, have sex with you," Izuku confessed, blushing deeply, once he'd gotten his tears under control.
Aizawa sighed, though Izuku hadn't failed to notice that even during his bout of tears, the bulge of his erection underneath his towel hadn't gone down at all. Aizawa set one hand on his leg, rubbing circles into his ankle with his thumb. Shivers raced up Izuku from where they touched.
After a long moment, Aizawa met his eyes, and that reignited the small fire of bravery in Izuku. Boldly, he wiggled closer to the man on the bed, the towel around his waist coming loose to reveal one bare hip. Aizawa's gaze traced over it, back up to his bare chest, then to Izuku's face.
"You seem pretty determined about this, kid," Aizawa said.
"I want to know what real sex is like - not just what we, um, did... on accident..." Izuku's bold speech trailed off, as Aizawa still didn't say anything. For another moment, the man just traced circles on his skin, where he still held Izuku's ankle captive. But then, he shifted closer too, hand sliding up his ankle, along his leg, setting to rest on Izuku's bared hip.
"You really want me to fuck you?"
Izuku nodded, probably looking desperate. There was a glint in Aizawa's eyes that he hadn't seen before.
"You understand that whatever happens - everything that's already happened - it has to be a secret?" Aizawa rumbled. "You can't ever tell anyone, no one at all."
"Yeah, yeah I promise, I know," Izuku breathed.
Aizawa chuckled. "You really shouldn't promise to keep secrets for strange adults, Midoriya. You'll get yourself taken advantage of."
"Please take advantage of me, sensei."
Aizawa couldn't hold back a laugh at that, chuckling as he shifted fully onto the bed. "God," he muttered. Izuku wasn't able to contain his grin. He pulled at his own towel, then at Aizawa's, tossing them both to the ground. Even his bout of crying hadn't stopped the quirk-induced lubrication from slipping out of him, and as Aizawa slipped between them, his thighs shimmered with slickness.
"You know, with real sex, normally I'd be having to finger you open," Aizawa told him. He slid his hands up Izuku's thighs, palms coming to rest on either side of Izuku's tragically untouched dick. "You shouldn't take anything to do with this quirk as at all normal, Midoriya."
Izuku nodded. "Uhuh, I know. I've never even been able to get my fingers inside me when I've tried on my own."
"What, like this?" Aizawa asked, amused, and so saying, he ran the first two fingers of his right hand down between Izuku's cheeks, confidently sliding them right into his hole without even an ounce of resistance.
"Yes!" Izuku squeaked. He tilted his hips up, spreading his legs even wider.
"God, you're so cute," Aizawa whispered, almost to himself. The butterflies in Izuku's stomach kicked up a whole level as Aizawa leaned down and pressed a quick kiss to his forehead, almost absently. With a deafeningly loud squelching sound, he slid his fingers in and out of Izuku, deftly finding Izuku's prostate.
"Sensei!" he gasped.
"Is this what you wanted, Midoriya? Does it feel good?"
Izuku nodded, because yes, it felt so fucking good, but then shook his head. "No, sensei, I want you to put your cock in me."
"Hng," Aizawa grunted. "Alright, hold on a second," he said, voice at a more normal register. He pulled his fingers out of Izuku, who deflated slightly. Izuku watched his teacher's cock twitch against his thigh. "It's - that was very hot, Midoriya, but you know this isn't like a porno, right? You don't have to say things like that if you don't want to."
Izuku squirmed. "But I do want you to put your cock in me?" he said meekly.
"Yup, yeah, I am definitely getting that." Aizawa took a heaving breath, hands braced on Izuku's spread thighs.
"I'm a lot bigger than my fingers, you know that might hurt, right?" Aizawa asked seriously, meeting Izuku's eyes. "There are other things we can do, too."
Izuku shifted. He could definitely imagine what other things might entail - and the thought of getting his mouth on Aizawa's cock was enough to make him see stars - but he could still feel the phantom impression of Aizawa's cock, the way it had pressed into him, practically carved its own space inside of him, and he wanted that again.
"I know that, sensei - but I really, really think it'll feel good," Izuku objected. Demonstratively, he slid four of his own fingers into his hole, shifting to make sure Aizawa could see how easily they slipped past his rim. Aizawa swallowed.
"Maybe just a little bit, and we can stop if you don't like it," Aizawa muttered. Izuku immediately reached down, grabbing his legs behind his knees, pulling them back to his chest so his dripping hole was totally bared for his teacher.
"Oh my god," Aizawa repeated, but that didn't stop him from following Izuku almost magnetically, sliding in close with one hand guiding his cock to Izuku's hole. He rested it there, shifting his hips so its spongy head slid back and forth, catching on his rim. Seeming to make up his mind, Aizawa grabbed Izuku's hip with his free hand, holding him still, then slapped the tip of his dick against his hole a few times, which made Izuku go light-headed. While he reeled from that (Holy shit, he'd once had a fantasy just like that - could he convince Aizawa to spit on him, too? He was almost sad that quirk had made him so wet, because there was no way Aizawa would need to spit for lubrication...) Aizawa pressed the head of his cock to Izuku's rim, and it popped inside.
"Yesss," Izuku hissed, but when he tried to fuck himself onto Aizawa, his teacher stopped him.
"Hold up a second," Aizawa commanded. The mad glint was still in his eyes, and his body coiled with tension like he was ready for a fight. Still, carefully, he shifted his hips, fucking very shallowly into Izuku. One hand gripped the rest of his shaft, jerking it like he was masturbating into Izuku, which was also insanely hot, Izuku thought. "How does that feel, does it hurt?"
"No-o-o sensei, it's good, fuck me more," Izuku moaned.
"You really, really, really don't have to talk like this is a porno, problem child," Aizawa muttered. Obligingly, though, he fucked a little deeper into Izuku, who squirmed for more. When he didn't get it, he clamped down on Aizawa's dick instead, flexing internally, and in reaction, Aizawa finally pressed deeper into him.
"Is that really how you want it?"
"Uh-uhuh," Izuku nodded. He let go of one of his legs, reaching for Aizawa trying to pull him closer. Aizawa shifted to throw Izuku's free leg over his shoulder.
"Tell me to stop," he muttered, almost begging. When Izuku didn't, he pulled all the way out, then slammed back into Izuku, balls pressed to his ass.
"It feels good, sensei!" It did feel good. Aizawa seemed to go a little wild, fucking him so roughly, Izuku had to press one hand against the head of the bed to keep from sliding away.
The sound of Aizawa's hips slapping into Izuku's ass filled the room. Izuku hadn't realized sex was so loud, though maybe that was because he watched most of his porn on mute. Aizawa grabbed him, manhandling him until he had both legs thrown over his shoulders, fucking him hard. Izuku moaned as his teacher’s cock (just as huge as he remembered it!!!) pressed into him, though it was only barely touching his prostate.
"You're really big, sensei," Izuku told him, though he probably already knew.
"Hng," Aizawa grunted. He gaped for a moment at Izuku then, unexpectedly, leaned down and captured his lips in a kiss. Izuku moaned into the man's mouth as Aizawa slipped his tongue between his teeth, licking into his mouth. It sent pleasurably tingles racing from the roof of Izuku's mouth down to his cock, slapping against his belly. Aizawa ground his cock into him as he kissed him and Izuku - his own legs now wrapped around Aizawa's waist - threw his arms around his teacher's shoulders, clinging.
When Aizawa pulled back from the kiss, he asked Izuku again, "How does this feel?"
"It’s really, really good, sensei," Izuku assured him. Aizawa shook his head, laughing a little, and clarified, "No, Midoriya, give me some specifics. How does it feel?"
Izuku hitched a breath, blushing. All the while, Aizawa kept grinding into him. "It's - uhm - I like it? It doesn't hurt?"
AIzawa leaned down, pressing another quick kiss to Izuku's lips. "So cute," he whispered, then asked, more intently, "How good is good, Midoriya? Do you want me to keep doing just this? Do you think you could come from this?"
Izuku had to admit, the answer to that was 'no.' He shook his head. "Alright, let's try something a bit different," Aizawa said.
Then he pulled out, to Izuku's vocal disappointment. Aizawa laughed. "Turn over," he directed, nudging him, and so Izuku did, if a bit clumsily. His legs felt like jelly.
Aizawa grabbed him by the hips, pulling him up so he was on his hands and knees. "How's this?" He ran his hands over Izuku's ass, pressing into the muscle.
Izuku was absolutely on board with where this was going, but certain practical realities were making themselves known, unfortunately. "Sensei, I can't, um..."
Suddenly all business, Aizawa pulled him back so he was kneeling, his teacher's arms wrapped around his waist. "What's wrong, Midoriya?"
Izuku flushed, looking away. "It's not - I liked it, promise, it's just... I can't put all my weight on my hands like that anymore without it hurting," he confessed. There was a lot he'd go back and do differently, when it came to One for All, and suddenly not being able to do doggy-style with his teacher (who definitely wasn't supposed to be fucking him) jumped to the top of his list of reasons to regret how badly he'd fucked up his arms. Tears threatened to spill down his face again.
"It's alright, shhh, it's okay," Aizawa soothed him. "We don't have to stop."
His teacher hugged him from behind, running his rough hands up and down his chest. Even through the tears, he shivered as the man's calloused palms brushed over his sensitive nipples. Aizawa's hard cock, wet and slippery now, pressed into his back, a solid rod of heat. Izuku gasped wetly.
"How's this?" Aizawa asked. He firmly but considerately pressed Izuku forward. He manhandled Izuku - in pretty much the same way he did when he helped them stretch out during class, wow - until his face was pressed to the mattress, head resting on his folded arms so he could still breathe, with his ass in the air and tilted back.
Izuku pressed himself further into the stretch, which honestly felt pretty good. He heard Aizawa choke on a breath behind him, hiding his teary smile in the mattress. "It's good, sensei," Izuku declared. "You should keep fucking me, now."
When Aizawa pressed into him this time - his entire (huge!!!) cock slipping inside with ease - it pressed directly into Izuku's prostate, and he moaned loudly.
"Holy shit, kid," he heard Aizawa mutter, fucking into him again. Izuku clenched down on him, and between his legs, his dangling cock began to drip even more pre-cum, leaking like a faucet.
"Do I feel good, Eraserhead?" Izuku moaned. So, maybe he'd been doing the porno lines on purpose, he'd admit it. "Do you like my hole, sensei?"
"I want to take a picture of my cock in your pretty hole, show it to all my friends," Aizawa groaned, and heat raced through Izuku at that idea.
"Yes, yes, yes," Izuku declared fervently.
Izuku fucked himself backwards onto his teacher's dick. Aizawa started laughing, which chased giggles out of Izuku as well. "Oh, you like that idea, huh, problem child?"
"Ye-yeah," Izuku stuttered. "You should do it."
"You don't really want me to," Aizawa teased him, but Izuku was calling his bluff. He stuck one arm out, rifling through the bedsheets until he found Aizawa's phone where it had been discarded. He thrust it back at the man, who was so surprised, he pulled fully out of Izuku.
"Taking a photo is kind of the opposite of keeping this a secret, kid," Aizawa objected.
"So?" Izuku said boldly. "I don't have any identifying marks on my legs, just keep the rest of me out of the picture."
"Are you actually serious?" Aizawa held the phone in his hand like it was a live snake. But when Izuku didn't waver, only nodded, Aizawa flipped it over, unlocking it with his thumbprint to open the camera app.
"Actually, you should take a video," Izuku decided as he stretched back into position, presenting himself. "I'll keep quiet so no one knows it's me."
"The crazy is contagious," Aizawa muttered, which was a little rude - Izuku knew all of Eraserhead's public stats, his teacher was definitely already as crazy as him - but the sound of the video starting kept Izuku from objecting. He dropped into an even deeper arch as Aizawa rubbed the head of his dick against his hole, slapping it a few times before dipping into him. He pulled out, then did it again, stretching Izuku open with his other hand. Then he thrust in hard, and Izuku couldn't help but gasp as his teacher pounded into him.
Aizawa kept it up for a minute, Izuku biting down on the pillow to try and keep quiet. His dick still leaked underneath him, the wet spot rapidly spreading. Then, he felt Aizawa pull out, resting the head of his cock against Izuku's hole again, and there was the unmistakable click of the camera shutter. Aizawa took a few more pictures, thrusting back inside him, then pulling out, then slipping one thumb into Izuku along with his dick, before he decided he was done, tossing the phone back to the bedsheets.
"Is that what you wanted, kid? How're you gonna feel when I put that in the group chat?"
Izuku moaned loudly, and Aizawa thrust back into him. He grabbed Izuku's hips, gripping him with an iron strength, then practically lifted Izuku off the bed as he pulled him back on his dick. Izuku wondered if this was what being a fleshlight felt like.
Aizawa pounded against his prostate, and it occurred to Izuku that he was gonna come, completely untouched.
"Fuck, yes, fuck me, fuck me," Izuku chanted. Aizawa must have realized what was happening, as he kept exactly the same pace, fucking into him like a machine.
"Yeah, come all over yourself, problem child. You know you want to."
Izuku did. He glanced underneath himself, watching as his cock twitched and jerked all on its own, shooting ropes of cum into the bedsheets - more cum than he'd ever seen come out of him at once. Probably because of the quirk, he noted absently, feeling fully floaty, like he could levitate up off the bed. He even thought he started to, head and shoulders floating up off the pillows, before he felt the unmistakable feeling of Aizawa's quirk activating, and he crashed face-first back into the pillow.
What on earth? Izuku thought to himself, but Aizawa quickly distracted him, yanking him back onto his dick and holding him there. Izuku twisted just in time to see his teacher's eyes flutter open and closed, glowing red, as he came into Izuku's ass for the second time that day. Then he slumped forward, pulling Izuku away from the wet spot on the mattress to curl around him, cock still sheathed in his hole.
It was at least five minutes before either of them got their breath back. Eventually, Aizawa twisted, and his limp cock slipped out of Izuku. He held Izuku cuddled up to him, his head on Aizawa's surprisingly soft chest.
"You know, you really shouldn't let people take sex tapes of you, kid," Aizawa eventually muttered, mostly into Izuku's hair. "You're going into an industry where blackmail is a real concern..."
He trailed off as Izuku started giggling helplessly. Aizawa's chest rumbled underneath him as he also started laughing.
"Fuck me," Aizawa mumbled breathlessly, when their laughter subsided. "I swear, kid, I really haven't done something like this before… Ah fuck, I fucked a student..."
A hint of hysteria threaded its way through Aizawa's voice as he whispered the last part. Izuku rubbed a hand over Aizawa's chest, trying to calm him down.
"But did you like it when I called you 'sensei,' sensei?" Izuku asked, a little teasingly. But did really want to know, too.
Aizawa scrubbed a hand over his stubble. "Yeah," he admitted, and Izuku laughed, rolling on top of him. He sat up, straddling his teacher's waist, and Aizawa stared up at him like he didn't know what he was going to do with him.
"Don't worry so much, sensei," Izuku assured him.
"This, coming from the kid who is now starring in a sex tape on my phone? How are you so fine about all this?" Aizawa asked, disbelieving.
Izuku shrugged. "Well, there's nothing identifying about me in the video, right?" Aizawa shook his head 'no.' "And really, I do think it's hot, so... Plus, you're not going to get me in trouble for this, and I'm not going to get you in trouble, so what's there to worry about?" Possibly, the incredible orgasm had turned Izuku briefly insane.
Aizawa shook his head, but there was a smile pulling at his mouth. His hands rubbed circles into Izuku's hips, which were starting to bruise.
"Do you really have a group chat where you post your sex tapes?" Izuku asked, suddenly curious. A high flush spread across Aizawa's cheeks.
"I mean... it's not in the official teacher's chat..."
"You share it with the other teachers?" Izuku had figured it was just with his (mysterious) friends.
Aizawa flushed even more. "Is All Might in the group chat?!" Izuku demanded.
"No!" Aizawa protested.
"Oh well, that's fine, then," Izuku deflated.
"Wait, what?" Aizawa asked, shifting backwards to sit up against the pillows.
"Well, so long as All Might's not in the chat, you can post the video," Izuku said, obviously. Aizawa gaped at him. "What? I said you could."
Aizawa shook his head, chuckling. "You really are crazy, problem child." But as he said it, he was reaching for his phone.