CW: Explicit Sexual Content as always, you can skip from the ❥ to the ❥‖ to avoid the explicit section if you wish. [NOTE: Things do start to heat up and you may be wondering why there is no love heart. Bear with me. There is no love heart yet for a reason.]

✷✷✷

Things were not better in the morning. And things continued not to be better. Izuku couldn't keep his frickin eyes off Kacchan; sometimes he thought he must be being too obvious, but he couldn't help it. 

Everything Kacchan did, every move he made, every word he said, Izuku couldn't help greedily drinking it all in. He just wanted to be allowed to stare at him all the time, to be allowed to touch him as much as he wanted, like some interactive art exhibit. Was that dehumanising? Oh god, Izuku was already such a terrible person and seemed to just be getting worse every second.

Bakugō had started complaining over the past couple weeks that Izuku's body heat made it 'too damn hot', and had said that if Izuku was going to be 'all over him', well then Bakugō couldn't be expected to bake all night. His constant lack of shirt was distracting and flustering, but Izuku liked it, he liked getting to stare at his body when Bakugō couldn't see, he liked getting to feel it against him skin to skin, not brave enough — or desperate enough to think up a flimsy excuse — to take off his own shirt, but against his flushed cheek, the curve of his arm, his open palm (and just maybe he 'casually shifted' the hands he so faux-innocently laid on Bakugō a little too much).

He absolutely shouldn't. Izuku shouldn't be enjoying any of this, he still knew that and his guilt was eating him alive — he shouldn't be taking advantage of the situation, and he had to be just the worst type of person for it. 

But it was like a siren song to him, and he was weak and guilty for it, but he couldn't stop looking, stop touching. He liked the shape of Kacchan, liked to watch him move, the way the muscles shifted just below the surface, he liked the heat of his skin. He liked it when Kacchan was drifting off, gone completely slack and silent, he liked to press his fingers in — just slightly, just enough to feel — feel the dense, relaxed muscle lurking just below a healthy layer of fat. Something about it felt so...elemental, so alive in such a basic way, and most importantly, it felt unguarded. There was no posturing left to be had, just Kacchan, just existing. It was easy for anyone to see that Kacchan was a prickly, guarded person with some pretty high, resilient walls, but this felt a little like getting a peek behind the curtain, like Kacchan trusted him enough to leave himself vulnerable around Izuku.

Maybe he shouldn't, maybe Izuku was the wrong person to trust, maybe he was taking too much advantage of it. The guilt twisted him in knots and ate him up inside.

But he still treasured that trust, ill advised or not.

✷✷✷

Izuku was really really trying to finish his reading for class tomorrow, he was, but his eyelids had just grown so stubbornly heavy, and Bakugō wasn't helping at all. Bakugō was on his phone while Izuku read, his cheek and the hand holding his book resting on Bakugō's bare chest. 

When Izuku had first settled in, Bakugō had loudly complained that Izuku should hurry the fuck up so they could go to sleep already, but after that he hadn't made any interruptions to complain further, letting Izuku read in peace, his free hand buried in Izuku's curls. And it felt so nice and relaxing, and it was late, and Kacchan's skin was so warm against his face, almost like a sunbeam, and it was feeling almost impossible to stay awake and pay attention.

Izuku groaned. "Could you stop? I'm falling asleep and you're not helping."

Bakugō's hand in his hair froze. "HAH? THEN WAKE THE FUCK UP!" he demanded at full volume, completely heedless of others in the dorm probably trying to sleep.

Izuku bolted upright, his book toppling off of Bakugō onto the bed as Izuku waved his arms in distress, like he could physically quiet the words in the air. "Kacchan! It's way too late to be yelling like that!"

"Then maybe you shouldn't make stupid demands for stupid reasons! I like petting your hair." 

He said it so grumpily, Izuku almost didn't register the words at first, but when he did, he blinked at Bakugō for a moment and then let out a small, giddy laugh. But then, it seemed, once he'd started, he couldn't stop. It was just so ridiculous — Izuku would never in a million years expect to hear Kacchan actually admit to something as silly and soft as that, but here he was.

"What's so funny, nerd?" Bakugō challenged.

"You."

Bakugō bristled. 

"No, I'm sorry Kacchan," Izuku rushed to say, before he could get mad. "I'm not laughing at you, not really, it's just— I never thought I'd hear you say something like that. It's funny."

Bakugō still looked annoyed, but less like he was going to explode. "Tch, whatever, I like your hair — are you gonna lay back down or what?"

"I thought my hair was stupid?" Izuku teased. "Isn't everything about me stupid?"

"It is stupid!" Bakugō snapped back. "I can like stupid things if I fuckin' want!"

Izuku couldn't help letting out another tiny laugh, and he wondered just how many things Bakugō insulted that he secretly liked. He wondered if Bakugō secretly liked Kirishima's hair too. "Do you like a lot of stupid things?" he asked.

He swore Bakugō's eyes flicked down for a second before flicking back up to Izuku's eyes. "A few."

Izuku didn't even know quite why he did it, except maybe that his heart was speeding and his head was buzzing a little bit and he was kind of feeling like a bit of a stupid thing himself — and, most importantly, that something was just increasingly frickin wrong with him and his ability to keep it in his frickin pants around Bakugō.

So he lurched forward, leaning down and kissing Bakugō.

As soon as his brain caught up to what the heck he was actually doing — which was approximately half a second later — he jerked back just as quickly, flushing red and scrambling to put more space between him and Bakugō.

"I'm so sorry!" he babbled, because wow, he'd finally really done it, he'd finally ruined their friendship just like he'd known he would, and he didn't know what else to do about it but apologize. Because he probably deserved any yelling Kacchan would do, but he just— he didn't want Kacchan to feel so betrayed. It probably wouldn't help anything, but it was all he could do. "I don't know why I did that! I just— I'm not sure— I'm sorry! I didn't mean to—"

"Why do you never know how to shut the hell up, you damn nerd?" Bakugō growled, looking pissed as ever as he sat up and reached for Izuku.

For a moment, Izuku thought he was going to be throttled, but then—

He made a surprised noise as Bakugō yanked Izuku back toward him, slamming their mouths back together fairly painfully. But then it softened, and Bakugō was...kissing him, and it took Izuku a shocked moment to realize that he should probably be responding.

He leaned into Bakugō and kissed him back, one hand coming up to cup his cheek.

Kacchan was kissing him on purpose. Oh my god, he was kissing Kacchan; he didn't know what to do with himself. Was he even doing it right? Kacchan seemed to like it, anyway, burying one hand in Izuku's hair and sliding the other over his waist, dragging Izuku with him as he laid back down, never stopping their kisses. 

He was kissing Kacchan, oh god, he was on top of Kacchan, he was straddling him, and Kacchan seemed to want it — that was the most befuddling thing about all of this, the thing that had half of Izuku's mind whirring at top speed, and the other half just sitting in silent awe.

Izuku didn't know how long they kissed for — only that he absolutely did not stop overthinking it the entire time — but eventually, and rather abruptly, Bakugō pushed him back, and Izuku was left blinking and slightly dazed.

"Fuck," Bakugō said, looking mildly pissed — as usual, granted, but still, this rather specific context sent a spike of cold fear through Izuku's heart. Bakugō's eyes snapped back up to Izuku's. "Finish your stupid fucking reading already so we can go back to that," he demanded.

Izuku let out a small, slightly incredulous, relieved laugh. "Yes, Kacchan."

It was a little hard to focus on the reading, but he was certainly no longer in any danger of falling asleep, as keyed up (and, admittedly, kind of turned on) as he was in anticipation of getting to kiss Bakugō more. 

At long last, he finally put the bookmark back in and closed the book. "Okay, I'm done."

Bakugō immediately dropped his phone beside his pillow and snatched Izuku's book, tossing it to the floor. "Good."

"Kacchan!" Izuku admonished.

"What?" Bakugō pulled lightly up on the hand curled in Izuku's hair. "Get back up here."

Izuku let out a huff as he turned and crawled over him, but he didn't quite manage exasperated — he was too full of anticipation.

"Hot." Bakugō commented, and Izuku flushed. He hadn't meant his actions to be so...suggestive, it was just, Kacchan was lying down and there wasn't really another way to do this, and—

Bakugō slid a hand around the back of Izuku's head and pulled him down into a deep kiss, momentarily derailing his train of thought. Okay, yeah, that worked too.

Izuku didn't...exactly know what any of this meant. Whether this constituted a relationship to Bakugō, whether they would keep doing this (though it kind of seemed like Bakugō wanted to), whether Bakugō would want to keep the rest of the dorm from finding out about this — whatever it was. But Izuku just knew he wanted as much of it as possible for as long as Bakugō would let him.

Bakugō slid the hand not buried deep in Izuku's hair up his side, under his shirt, running over his waist and then feeling over the muscles in his back, and Izuku hadn't known that a simple touch could feel like that, but it almost burned in the most delicious way. Bakugō's hand was hot and kind of sweaty, and maybe it was because attraction changes one's perceptions or something, but it definitely wasn't a turn-off — in fact, his touch left Izuku's skin feeling flushed and tingly, igniting a fire in his stomach.

He skated one of his own hands over Bakugō's bicep, just running his hand up and down as they kissed. He'd never gotten to actually touch them before, but Kacchan had amazing arms, and maybe Izuku had had to keep himself from staring a few (more than a few) times in the past, and resist the temptation of taking advantage of their cuddling to make up an excuse to touch them, but now he could, now he was allowed. Amazing.

And Izuku supposed he'd never really thought about it, but Bakugō kissed so much more gently than Izuku supposed he would've assumed, initial grabbiness aside. It seemed more like Bakugō to go into it with the same aggressiveness he did everything else, to treat it like a fight, like a competition. But he didn't. He kissed Izuku like he was simply luxuriating in the feel of him, and that kind of turned Izuku on a lot. He hadn't expected Bakugō to ever kiss him, and he especially hadn't expected Bakugō to want to kiss him, to enjoy kissing him. But it kind of really seemed like he did.

Bakugō pulled Izuku's hair slightly, tilting his head back a little and starting to kiss down his face, over his jaw, down the side of his throat, skimming his teeth over Izuku's skin and then sucking. And it felt odd — it didn't necessarily feel good in itself, but for some reason it was turning Izuku on even more, dangerously more (maybe just because everything was turning him on at this point, and it was all snowballing at a frankly terrifying rate; Izuku didn't know, and for once, he wasn't sure he cared). He couldn't help letting out a small sound, and part of him was embarrassed because he didn't think he'd ever heard himself moan before, but then again, this wasn't altogether the wrong time to be doing such a thing, and Kacchan seemed kind of into it.

"Fuck," Bakugō gasped against Izuku's skin, his hand tightening in Izuku's hair and fingers digging into his back.

He returned to leaving slow, sucking, open mouthed kisses over Izuku's throat, and Izuku felt like he was going to burst. His feelings felt too big for his skin, and he— god, it was embarrassing to even think, because he usually just ignored it until it went away, or got rid of it quickly, but he was harder than he'd ever been in his life, and it was embarrassing to acknowledge but more embarrassing that it was from only some kissing. But it was Kacchan, and they were alone in his bed, and he was kissing him like that, and Izuku couldn't help it, it was making his mind go wild, it had taken this situation and run with it and he was imagining all sorts of things. 

He wanted to touch Kacchan all over, he wanted to see what he looked like naked, he wanted to know— Izuku shouldn't be having these thoughts; he really shouldn't be letting himself get carried away like this. Oh god, it was so hard not to though — Kacchan was everywhere, his smouldering scent filling the air, his touch hot and electrifying, his lips, his tongue, his teeth, his panted breaths— 

Izuku's hips subconsciously bucked slightly into the air between them, where he hovered over Bakugō on his knees and forearms, and his erection brushed against something, making his hips instinctively dip down further and grind against Bakugō, chasing relief and letting out a breathy moan when he got the first inklings of it.

Bakugō made a low, pleased noise in the back of his throat — which did absolutely nothing to quell Izuku's ever-mounting arousal — and automatically pushed his hips back up against him.

Oh god that was so good— Oh god, wait, what were they doing?

Izuku pulled back, pulled back completely, and Bakugō let him without protest, his hands sliding down to rest on Izuku's hips as he sat back — carefully scooting up to avoid the, um, problem area, and sit on Kacchan's stomach. "I don't— I've never— Should we do this?" Izuku fretted, wringing his hands. "I've never been in a relationship; are we going too fast?"

Bakugō rolled his eyes. "And you think I have? Just do whatever you want — who do you think is gonna judge you?"

"Well— I mean— What about— What do…you want?" Izuku asked. What even was this relationship to Kacchan? What did he want out of it, what was he expecting, how did he even think of Izuku?

"You think I'm gonna do jack shit I don't fuckin' feel like doing?"

Well…no, probably not, but that still didn't really answer Izuku's question. Bakugō seemed to want to leave it up to him though, at least for now. And Izuku...didn't really know what to do, didn't know what was right. Surely this wasn't the way relationships were supposed to go, right? You were supposed to go on a date, or maybe a few, and then kiss, and then eventually work your way up to...this. But they seemed to have done it all backwards. Was that okay? Was that a bad sign or something? Was this even the type of relationship where you'd go on dates? Was Bakugō his boyfriend?

Izuku just...he felt like he didn't know so much, and he felt...uncertain how to proceed. And he thought that maybe if he wasn't sure, it probably wouldn't be a good idea to do it. Better to pass it up than potentially regret it later, right? And he didn't want to regret anything with Kacchan, he never wanted to regret anything with Kacchan.

"I— I think we should probably, um, stop," he said quietly.

"Okay," Bakugō said simply, and for once, he didn't sound pissed. And Izuku felt a little more comfortable in his decision. "C'mere." He took a hand away from Izuku's hip to beckon to him with a finger.

Izuku leaned down again, and Bakugō arched his neck up to give him another peck on the lips. "Go get the light, nerd. It's your fault we're up too damn late."

Izuku gave an amused, relieved huff, kind of glad to see that Kacchan was still Kacchan, even if he was being so…nice tonight. "Okay, Kacchan."

He got up and put his book that Bakugō had thrown on the floor back in his backpack, turned out the light, and then settled in with Bakugō to sleep. He cuddled up against him, still wanting to be close, partially sprawled across him. And maybe certain parts of him were still really rather insistent about certain things, but it was okay, they could just cuddle and it would be fine.

As the minutes ticked by, however, Izuku found himself becoming no closer to sleep, wide awake and hyper-aware of Bakugō's body against his, the increasing urge that maybe if he just pushed forward a little against Bakugō's hip growing harder and harder to ignore. God, think about— about anything else. Recite hero stats. Remember how it feels to break your bones. Remember last time you and Bakugō fought. Remember how it felt when he still managed to beat you, even with One For All, how he got on top of you and… Okay, that wasn't helping at all, actually.

Izuku shifted restlessly, and his leg accidentally brushed— Oh. Kacchan was still hard too. Izuku bit his lip, sucking on it as he debated. He didn't…have to change his mind. And changing his mind might even look kind of stupid. But god he really wanted to, oh god, he was actually dying. This wasn't going to go away on its own, not with Kacchan right here, and there was no way he'd be able to sleep, and he wanted Kacchan. Maybe it was just because he'd been too turned on for too long and it was clouding his judgement, but he was suddenly finding it a lot harder to remember those reasons why this might just be a bad idea right about now. 

He tilted his head up toward Bakugō's face. "Kacchan?" he whispered hesitantly.

"Hm?" came the predictably disgruntled grunt back.

"I, uh, I changed my mind."

❥ "Oh thank fucking god." Bakugō rolled on top of him before he even saw it coming, and Izuku was left staring up at his shadowed face in the dark with wide eyes — but only for a split second, because then Bakugō was kissing him hard and grinding their hips together.

Izuku let out a muffled groan into the kiss, his legs automatically spreading a little and his feet bracing against the mattress to meet Bakugō's thrusts. 

His hands couldn't stay still, pulling Bakugō even closer by the back of the neck, sliding down over his shoulders, over his sides, and then back up, feeling over the shape of him, the tensed muscles, the intense heat of his skin. Izuku's hands slid around his back, feeling it flex, and he didn't know why that was so hot, but it was. He liked Kacchan's muscles, he liked to see him throw things, people even, during fights with those too-strong arms built to handle the recoil of his explosions. Izuku loved analysing quirks, and he loved quirks themselves and the secondary adaptations some people's bodies had to have because of them, and Kacchan had been his first up close and personal look at that. And Izuku had just never stopped admiring him. And he never wanted to. And now, not only did he admire the way Kacchan was built in that more analysing way, but he found him beautiful, he found him desirable, and the things he could do with that body, the power he had, only turned Izuku on more. 

Bakugō sucked on Izuku's lip, and Izuku let out another little sound and kissed Bakugō back fiercely when he released it. And he hadn't even thought about it as he'd done it, he'd just been reacting on instinct, but oh now their tongues were dragging against each other every time they kissed, and it felt new and kind of weird, but the type of weird that Izuku definitely wanted more of. 

He felt like he was being overtaken by the veritable tsunami of his feelings, like everything just kept building impossibly more, too much for him to hold, like One For All at full power. But the more he got, the more he wanted, like a vicious, neverending feedback loop. His hands ran further up Bakugō's back, feeling out over the expanse of it, up to his shoulders and then back down as he ground desperately back up against him, kissing him like it was the last thing he'd ever get to do, and still he just wanted more, more, more.

Izuku had never thought about any particular people when he'd gotten himself off, had felt far too guilty to ever do that, and he'd also felt too guilty and embarrassed to try watching porn, like people would somehow know and be silently judging him. Or, well, he had tried watching porn once, but had gotten barely a minute into the video before he was so anxious he'd had to exit out of the video, clear his search history, and pretend it had never happened. And, well, wet dreams where he didn't have any conscious control only made him wake up feeling more guilty than ever.

So, so the thing was, this, with Kacchan, was a very, very different experience than anything he'd dealt with so far, and he was having a little trouble processing how it could be so different, how it could be that much more. But it was, it was infinitely more intense than anything he'd (perfunctorily, ashamedly) done himself, and some part of him was a little afraid of it. Because he didn't know if he'd be able to ever put that cat back in the bag. Now that he knew it could be so different, so overwhelmingly good, how was he supposed to go back to the way things had been before? 

Bakugō's thrusts became rougher, harder, faster, and suddenly it was difficult to keep kissing with the way their mouths kept jostling against each other. They ended up just panting against each others' mouths as they frantically ground against each other, and soon Izuku was gasping out mindless chants of, "Yes, yes," and, "Please," and letting out little uncontrollable moans on every breath.

"God, you really don't know how to shut the fuck up, do you?" Bakugō clapped a hand over Izuku's mouth to muffle his noises, which was probably a good idea if they didn't want anyone hearing what they were up to through the wall. He leaned in closer. "'S fuckin' hot," he panted in Izuku's ear, lips brushing against it.

That did it for Izuku, a shiver running down his spine before he felt himself come with a muffled cry. He didn't even notice himself making desperate little noises behind Bakugō's hand after, he was just focused on grinding harder up against Bakugō, riding out his orgasm, his blunt nails digging into Bakugō's back.

After a few moments, Izuku slumped against the mattress like a marionette with its strings cut.

"Oh my god that was so fuckin' hot," Bakugō said, barely voiced, but his voice deep and rough with lust.

He finally removed his silencing hand from Izuku's mouth, starting to kiss over the side of his face, which had lolled to the side, and down his neck, as he pulled his hips back a little and reached down to jerk himself off.

Izuku opened his eyes and looked down, though he couldn't really see in the dark, could just see vague movement. "Do you want me to…?" he asked, skating one of his hands around Bakugō's front, running over his ribs, down his stomach.

Bakugō paused. "If you wanna."

"Um, yeah," Izuku said shyly, feeling himself flush, but slid his hand lower, brushing Bakugō's as he took his own hand away, pushing the front of his pajama pants down more fully out of the way, and then— Oh god, he was actually touching Kacchan's cock. That thought was so foreign to him it was almost still unfathomable, even though it was happening. 

Izuku cautiously wrapped his hand around it completely and stroked over it once.

"If you don't hurry the hell up, I'm jerking myself off," Bakugō hissed.

Izuku made a sort of squeak, and then couldn't help but let out a little laugh — part out of nervousness, part out of embarrassment, and maybe part out of just plain euphoria — as he did as he was told and moved his hand faster.

"God yeah," Bakugō gasped, thrusting into Izuku's hand. And then he suddenly lurched forward and kissed Izuku again with a dizzying intensity.

Izuku's free hand buried itself in Bakugō's hair, clenching and pulling him even closer, as he continued jerking him off quickly, and a minute later, Bakugō's body abruptly locked up for a moment and Izuku felt him come on his stomach (well, whoops, there went his shirt), before he returned to rocking his hips into Izuku's hand for a few more moments with a low, satisfied hum against his lips.

Eventually, he pulled away slightly, and rolled onto his side beside Izuku, tucking himself back into his pajamas and then grabbing the side of Izuku's waist and pulling him up to face him, sliding up closer to him and kissing him again, slow and gentle and unhurried. And Izuku felt himself melting into it, his hand sliding over Bakugō's side to rest in the slight dip of his waist. 

Bakugō let out another pleased hum after a few minutes, but pulled away slightly. "We're gonna be tired as hell tomorrow," he murmured.

"Mm," Izuku agreed. He really couldn't find it in himself to regret it though, not right now at least.

"'N you should probably get cleaned up. Doubt you wanna sleep like that."

Izuku sighed. "Yeah."

He gave Bakugō one last, chaste kiss on the lips, and then reluctantly got up to clean up and change after the not-very-well-thought-out plan of coming in his pants.

❥‖ It didn't take long, and Izuku quickly got rid of his dirty clothes and climbed back into bed, settling in curled up against Bakugō's shoulder, and tilting his head up to look at him. "G'night," he whispered.

Bakugō angled his head to give him a soft kiss, before letting his head fall back again and closing his eyes, arm tightening minutely around Izuku. "Night."