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Bakugo Katsuki Joins a Fight Club and Discovers He’s a Masochist

Summary:

Devilishly handsome new student Ryota Aishi is introduced to class and Katsuki Bakugo is having none of it! Aishi’s genius idea of a clean no-stakes fist fight takes Bakugo through a whirlwind of emotions, leading him to some self discovery!

(if you don’t care about the oc stuff, just scroll to the bottom and read about bakugo getting ass fucked xx)

Notes:

sorry fellas, i know we aren’t big on oc fics on ao3, but i had a whole lotta fun writing this! i wish i could join an underground fight club….

(See the end of the work for more notes.)

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“Okay.. everyone. Sit down.”

Aizawa lazily ushers the students of class 1A to sit down and shut up. He unzips himself out of the large worm-like sleeping bag and plops down at the teacher’s desk.

Katsuki Bakugo, alternatively, Lord Explosion Muder, sat with his legs kicked up on the desk and an everlasting smirk on his face. Something to tell the folks around him “Don’t fuck with me.”

“Due to a credit transfer issue,” Aizawa explains, “the twenty-first student enrolled late.”

To class 1A, this just meant an exciting new student was joining. Everyone simultaneously began gossiping and talking amongst themselves. Izuku Midoryia, aka Deku, turned to Bakugo, a bright exuberant smile on his face at the idea of a new student. He was already white knuckling his pen and clutching his notebook, eager to learn about the new kid’s quirk.

“Kacchan, what do you think the new student’s quirk is?” He yelped excitedly.

“I don’t know. Just another extra that’ll never surpass me.” Bakugo grunts. “They probably won’t even try to.”

Deku looks not at all disheartened, actively choosing to stay positive. Aizawa gets up and walks to the door to greet pro hero Kamui Woods. Deku looks like he’s about to implode in on himself.

“Kamui Woods!?” He says, nearly falling out of his seat. “It’s very nice to meet you my name is Izuku Midoryia can I ask some questions about your quirk— and actually I was wondering if I could just get a field test of your powers to write some things down I’m not free today but tomorrow after class shoulder work and hey maybe I could ask Hatsume san for a little help with the diagrams of your hero gear— also I was really wondering what you look like under the mask I don’t mean to pry but surely years of publicity and still a private face makes for a really intelligent and privacy-oriented hero—“

Deku’s rambling is abruptly cut short by a chair thrown by none other than Bakugo.

“Shut up nerd.” He says, catching the chair from Mezou Shoji who had caught it and tossed it back.

Without a thank you or anything, Bakugo put the chair back on the ground and sat, completely ignoring the sobbing Deku, whining about a comically large bump on the side of his face. Everyone turned their attention back to the front of the room, where Aizawa and Kamui Woods were talking quietly. Bakugo would pry the topic of their discussion from Mina Ashido later.

In walks a serious bombshell of a guy. Tall, not bulky but still very impressively built, with serious masculine good looks. A ton of girls and a few guys instantly fawn over this new fella. Deku begins scribbling almost instantly— and Bakugo’s shocked to see even he’s affected by this dude’s appearance. He writes something about “Quirk: Shapeshifting?” No way this guy got into UA for a shapeshifting quirk.

Immediately pissed off with this guy, Bakugo yells. “Are you serious? This dude must’ve slept with the board of ed if he got in. Extra with a cruddy quirk!”

The new boy raises an eyebrow, not instantly upset or angry like the people he’s used to irritating.

“No I didn’t.” The new guy says.

No I didn’t? What kind of shitty answer is that? No retort? No insult? No sadness? Just a stupid “no I didn’t?” Bakugo almost exploded his desk then and there.

“Ah, sure, idiot.” He laughs. “We all know you totally did.”

The new student doesn’t seem bothered. Rather, he gives Bakugo a look saying “Seriously?” Like he can’t believe someone would say something so ridiculous. Aizawa butts in before it can escalate.

“He passed the entrance exam with flying colors. Credits from one highschool to another didn’t transfer so he had to wait before enrolling properly.” He says calmly. Bakugo backs off, for now.

Aizawa motions for the new guy to introduce himself, before slipping into the bright yellow sleeping bag.

“I’m Ryota Aishi. I hope we can all get along and have a good time.” He says with a bow.

Stereotypical introduction, Bakugo thought. This guy was just a handsome face with a bland personality, and once the girls try to get to know him, they’ll realize it. “This guy’s an extra.”

Bakugo grunts. “There’s only twenty seats, and he’s the twenty-first. Useless dude.”

“Oh. That’s right.” Aizawa sighs. “I’ll go to the storage room and get a new desk.”

He flops down onto his face in the sleeping bag and begins inching his way to the door. Is.. he seriously going to inch worm himself to the storage room and back? That’s gonna take at least 30 minutes!

Once he’s out of the room, Ashido cheekily shuts the door and begins her classic gossip routine with Tsuyu Asui. Tenya Iida and Ochaco Uraraka strike up conversation with the new student, and Bakugo tries his best to focus up and listen to what they’re talking about. He wanted to know exactly what this extra’s deal was.

Deku squirms his way through the desks and talks with the rest of his friends, and Aishi. Now this conversation he can hear, cause Midoryia is so damn loud.

“Aishi san, it’s nice to meet you! I’m Izuku Midoryia!”

Uraraka butts in. “But we call him Deku.” She chuckles when Deku gets flushed.

“Deku, huh?” Aishi questions. He speaks calmly, Bakugo noticed. Much more so than Deku or Uraraka. “It’s nice to meet you.”

Aishi firmly grabs and shakes Deku’s hand. Naturally, Midoryia clutches the hand and shakes it fast, getting back into his excited swing.

“So, tell me all about your quirk!” His eyes are glowing. Good god. What a nerd.

“Well, my quirk is called Rigor Mortis.” Deku’s mouth is wide open with awe. If Bakugo was there, he’d smack his chin back up.

“If I die, I can regenerate and come back stronger. But the strength only lasts… hmm, fifteen or so minutes?” Aishi says. Sucky quirk.

“It’s stackable.” Stackable? What?

So, this guy can die, regenerate stronger, and just do it over and over again? What a world of hurt this dude must be living in! That’s not a good quirk at all, that’s just pain and frustration.

Bakugo throws a chair. Why? He didn’t really think it through. To hit the new guy? To get his attention? Not too sure, but before anyone can react Bakugo has Aishi by the shirt and is holding up a hand, ready to use his explosions. Dumb idiot doesn’t look scared at all.

“Why’ve you got your hand like that?” Aishi questions, noticing the odd arrangement he has his hand in. Oh, right. This idiot doesn’t know about his killer explosion quirk.

Deku chimes in like a talkative dog, “He has an explosion quirk! The nitroglycerin-like sweat from his hands can be ignited to create explosions!”

Aishi looks curious more than anything.

“An explosion? That’s pretty cool.” Feeding into Bakugo’s cockiness was not what he expected to happen. He momentarily lets go of Aishi’s shirt.

“It is cool, I know.” Bakugo spouts confidently.

“But.. sort of messy, don’t you think? If you explode me, it’ll really mess up the classroom.” Aishi says. What the hell is he getting at?

Bakugo is a bit confused— but will by no means let it show on his face. He can’t decide if he should treat Aishi’s comment as an insult to his quirk, or a genuine concern for the environment. Before he can treat the comment as if it was anything at all, Aishi proposes an alternative idea.

“We can fight, if that’s what you want.” He offers. Everyone in the class immediately snaps to his attention at the idea of a fight.

As much as everyone says they’re going to be heroes, going to stop fights and want the good for everyone, they’re still high schoolers. So they still love a good scrap between two students. Too bad phones aren’t allowed outside of the dorm grounds, because now would be the perfect time to begin filming.

Bakugo smirks at the idea. “Yeah I’ll fight you, I’ll show you who’s the most powerful!” He winds up his hand, ready to explode this new guy to smithereens.

“Oh, you’ve got the wrong idea.” Aishi says, placing a gentle finger on the palm of Bakugo’s hand. An oddly calm gesture telling him to not shoot out an explosion.

“What? We’re fighting.” Bakugo says, pushing Aishi’s hand out of the way.

“Hahah, not that sort of fight.” Aishi smiles. Girls swoon. What a douche.

“What other fights are there? I’m not doing any sports crap.” Bakugo says defensively. He’s good at sports, it’s just such a drag debating on rules, teams, and all that other crap.

“A fist fight.” Aishi says with a self-satisfied expression. A fist fight? What is this, a movie? Nobody has a real fist fight unless they’re both quirkless losers.

Bakugo crosses his arms. “Idiot! Who the hell even has fist fights? That’s so boring when you could use a quirk.”

Aishi shakes his head politely, and a few girls whine over how nice his dirty blonde hair looks. Stupid and choppy hair cut, Bakugo thinks. “Have you never actually had a clean fist fight?”

Bakugo spits on the floor, showing some sort of superiority complex over Aishi, but he doesn’t seem to mind. “Psh. No, bastard. I’ve got the most powerful quirk in the world. I can beat anyone easy with it, so why would I even try without it?” He says snarkily.

“This time it’s not about winning or losing. There’s nothing on the line.” There’s nothing on the line? And it’s not for training, so what’s even the point? Bakugo looks unamused.

“Nothing on the line? So why the hell are we even meant to fight hand to hand?” Bakugo spits.

“Cause we can. And it’s fun.” Heads turn at the mention of someone actually enjoying fighting. Who really has fun when they’re getting pummeled? And it must be ten times worse without a quirk to defend you.

Bakugo, on the other hand, becomes more intruiged. Maybe this guy is more interesting than I thought.

“Okay, yeah, maybe we can fight. Meet me in the gym after school—“ Aishi cuts him off. “We’ll do it here. Aizawa won’t be back for another..” He checks the clock. “Twenty or so minutes.”

Iida looks horrified by this idea. “No way will any students be fighting in the classroom! That is completely unacceptable!”

Aishi has a smooth mouth. An excuse for Iida’s concerns come easy.

“We’ll set up an arena of desks, and no quirks will be used.” He turns to Bakugo. “If it gets too bad, you can tap out, just like they do in wrestling.” Bakugo scoffs at the idea of tapping out. He’d never say mercy.

Iida still looks unsure. “I guess, technically if it’s fully consensual, you’re not using any quirks in the classroom, and nothing is getting destroyed… it might be okay.” He says reluctantly.

Aishi flashes him a stupid charming smile. “It will be fine. I’m sure it’ll be fun.”

Fun? This guy seriously has no idea what fun is.

A bunch of students move the desks into a circle at Aishi and Bakugo’s orders, and the two of them stand in the middle. Aishi’s taken off his tie and blazer, and Bakugo’s completely just taken his shirt off. Girls try not to look too hard out of fear of gushing over this scary, scary dude.

Aishi puts his fists up in a general fighting stance, and Bakugo does the same, having to modify it a bit because he won’t be using his quirk.

With little warning, Aishi charges and gives Bakugo a pretty bad punch to the kidney, and his instincts are screaming to explode the shit out of this guy. He almost does give in, but right before the spark completely takes, he balls his hand back into a fist and gives his opponent a nasty right hook. Aishi doesn’t even try to dodge, he just takes it.

A choir of breathy sounds arises as the two exchange punches with reckless abandon, not concerned that blood has begun dripping on the floor, or that Aishi’s shirt is basically caked in it.

In the heat of the crossfire of punches, Bakugo sees his opponent’s expression, he looks.. thrilled? Exhilarated? Like this simple exchange of ass-whooping is the best time of his life.

After another minute or so, the pain Bakugo felt began transforming into manufactured adrenaline. His face surely took the same expression as Aishi’s. He was having.. fun!?

They got into a rhythm of punch after punch after kick after elbow with barely any effort to block an attack at all, and god was Bakugo having a great time. He understood what Aishi meant by “I’m sure it’ll be fun.” This dude might’ve been a masochist, but hell if Bakugo wasn’t becoming one too.

Eventually, the terrified gasps of the class became excited oohs and ahhs. Looking up for just a moment— which resulted in an elbow to the jugular, Bakugo could see how entertained everyone was, like him and Aishi were putting on a show.

After what felt like a million years, (which was really only six or seven minutes) both Bakugo and Aishi fell to the ground, adrenaline wearing off, but still a bloody, satisfied smile on their faces. Aishi inched in next to Bakugo.

He spoke weakly, tired for the exertion. “See, fun right? You look like a kid on fuckin’ Christmas.”

Bakugo nodded— equally as weakly. “Hell yeah. That was,” He coughs. “amazing.”

Students look a little disturbed at how both guys, caked in blood, are raving about how much fun that brutal battle was. But for the most part, they all look excited, clearly never having seen a battle without quirks before. Bakugo half-expected them to start yelling “fight fight fight” like a bunch of middle schoolers.

Still staring up at the ceiling, Bakugo continues. “I’ve never done anything like that.” He says. “I didn’t think anyone would fight for fun.”

Aishi chuckles. “Well you hadn’t met me.” His handsome face was covered in blood, and in a weird way, that almost made him more attractive.

“I’ve got bandages in my dorm room. Get your clothes back on and we’ll get going before Aizawa sensei gets back.” Aishi says, lifting himself up with the help of a desk, Bakugo does the same.

He puts his blazer back on, and Bakugo puts on his shirt, both articles of clothing do very little to hide the blood. They walk warily through the halls, taking extra precautions to avoid any teachers or heroes roaming around.

Once they get to Aishi’s room, the two of them slump down onto his bed with little care for the blood dripping off of them.

“So, Aishi san.. do you really enjoy fighting for fun?”

“Call me Ryota. You can be informal with me, we’re friends now.” Aishi says. Informal? Friends? Nobody had ever so quickly initiated a friendship with Bakugo, even Eijiro Kirishima took a day or two before he decided to be friends with him.

“Friends? Why? Didn’t we just fight?” Bakugo asks.

“I’m friends with anyone I’ve fought with.” Aishi says with a smile. He sits up and walks into the bathroom. He comes out with a first aid kit and a whole box of bandages and ointments. Jesus, this guy is really stacked with stuff.

“Really? Even villains?” Bakugo questioned. He wondered if Aishi had ever actually fought a villain before— considering he had JUST enrolled into UA.

“Sure, even villains.” He says to Bakugo’s surprise. “I just respect whoever fights me. And I guess, respect leads to friendship.”

Bakugo raises an eyebrow. “You’ve fought villains before you were enrolled into UA?”

Aishi nods, disinfecting his own cuts. “Sure I have. I have some buddies in Tartarus.” TARTARUS? The Tartarus? Bakugo can’t believe his own ears. “They’re villains, but a lot of them are pretty chill people.”

Bakugo instinctively backs up after taking ointment for his injuries. “Seriously? But they’re villains.”

“Have you ever gotten to know a villain?” Aishi asks. Bakugo thinks about it. No, he really hasn’t. He’s always been focused on sending villains to prison, not.. befriending them? He’s even more curious what this dude’s deal is right now.

“No..” Bakugo says, trailing off. Aishi gives him a look.

“You’re bandaging yourself all wrong.” He says with a scoff. “Who taught you this method?” Aishi questions.

“The health teacher. Ah… I forget his name. We only take that class once a week.” Aishi clicks his tongue at Bakugo’s words.

“Here, let me show you.” Aishi says, skillfully wrapping the bandage around Bakugo’s torso, putting in extra effort to not grope him too hard. He makes it tight per Bakugo’s request, and in his mind Aishi wondered if he enjoyed that pressure. He liked pain, so why not like pressure?

“That’s how you properly bandage someone’s waist.” Aishi says with a proud smile.

It came rather naturally, so Bakugo felt inclined to ask. “Do you do that often? Patch people up, I mean.”

“Sure I do.”

“Who?”

Aishi gets stiff for a second, like he’s just admitted something he isn’t supposed to. He calms down, having made a decision in his mind.

“Well, Katsuki, I’m part of this sort of fight club.”

Bakugo raises his eyebrow with intrigue.

“You probably know the deal, booze, broads, betting, and of course fighting.” Aishi says as if it was the most run of the mill thing in the world.

Bakugo had always been somewhat of a delinquent, with the bullying, and the irritability, but he had never stooped to this level. His first concern was getting into UA and becoming a hero, not… chicks and drinks and beating the crap out of some random.

But.. all things considered, Bakugo already made it into UA, and was well on his way to becoming a hero. Additionally, if he was sneaky, he wouldn’t get caught. And he knew that was possible because Aishi made it into UA while being a part of that fight club. The fight they had in the classroom.. that felt like a whole new world was opening up to him. If he could experience that rush of adrenaline again and again, he’d do anything. It could also help with his training, in case it came to fighting hand to hand— not that he’d let it happen.

After a moment of internal debate, Bakugo came to a conclusion. “Take me with you.” He said. Aishi smiled knowingly, proud that his decision to tell Bakugo about this paid off.

A wealthy, somewhat sheltered boy like Katsuki Bakugo had very little experience in the world of underground fighting, but he was determined not to look like a fool in front of his new friend. He’d basically been more knowledgeable than everyone he surrounded himself with, so this newcomer with a knack for the darker subjects seriously put him in his place. Bakugo, for the first time, saw another student as his equal.

“Okay then.” Aishi says with a smile. “The next meeting is Friday, at 1am.” Bakugo hadn’t expected it to be so late. He needed to sleep well to maintain full strength, so this would be annoying.

The two of them finish patching themselves up. Bakugo made his bandages tight, enjoying the constricting feeling that came with it. Though, there wasn’t much he could do about the blossoming bruise on his eye. Bakugo and Aishi looked like identical dalmatians, covered in all sorts of bruises.

Bakugo looked at his bloodied knuckles. Even when they’re washed off, the red hue definitely won’t go away for a while. Aishi’s knuckles are the same way, maybe even more damaged than his. He saw it as somewhat a disappointment. Aishi had lovely hands, strong— clearly, but they were also long and slim. He tried not to think about how damaging Aishi’s hands bothered him.

“Ryota,” Bakugo questioned. “How long have you been in that fighting club? You’re sixteen, right?” It just now hit him how young they both were.

No way Aishi had actually been fighting since he was a little kid.

“One of the men who sort of runs the place,” He says. “He was a distant uncle. I grew up around those people.” Aishi muses. “I only started fighting around two years ago when I began expressing interest in heroics.” He smiles. Fond memories of growing up in a place like that? Bakugo can hardly believe his ears.

Despite how different Aishi’s situation was, he found himself liking his new friend even more. He didn’t want to rave about such a cool backstory at the risk of sounding like Deku, but a cool smirk told Aishi what he was thinking.

“That’s pretty cool. You must be experienced with fist fighting then?” Bakugo says.

“Yup. It’s something I’m really passionate about. Maybe in another lifetime I was a boxer or something.” Aishi comments.

In another life… Bakugo wondered what he would be. Most people think he’s crazy, but he just had the rotten luck of being born in the wrong century. Bakugo figured he’d be right at home on some ancient battlefield swinging an axe into somebody’s face. Or, in a Roman arena taking a sword to other gladiators like him. They’d have tossed him whatever girl he wanted back then. He clicked his tongue, satisfied with the thought.

“Probably.” Bakugo agreed.

He wondered what kind of women would attend an underground fight club. Definitely nobody he would be into. He tried to imagine it… gross saggy boobs and dead blonde hair. Yeesh. Sex with any sort of broad there would be like throwing a hotdog down a hallway. Bakugo wouldn’t voice these concerns aloud, not wanting to offend Aishi’s idea of a good time.

Wait. Hold the phone. Aishi mentioned there would be women there. Why would he say that if he didn’t care about the women? Does that mean Aishi.. sought out the women?

His mind instantly flooded with gross images of Aishi hitting on nasty coked up prostitutes. As illegal as drugs are in Japan, people always seemed to find a way. Thankfully he’d never had the displeasure of interacting with one of them.. but Aishi definitely has. He pitied the guy.

“Somethin’ wrong Katsuki? You’re making a face.” Aishi says quietly, a bit of concern creeping into his voice. “You don’t have to come if you don’t wanna, I promise.”

Bakugo shakes his head dismissively. “I never said that! I was just thinking. I still want to go idiot.” He crosses his arms, and flinches when a loose droplet of hydrogen peroxide hits a particularly nasty cut.

“Alright, alright.” Aishi chuckles. “You just looked like this.” He makes an exaggerated thinking-angry-mad face.

“Hey I do not!” Bakugo yells, a small explosion coming out of his hands and making a loud noise.

Aishi jolts over and grabs his hand, covering it. “Dude! That’s so loud!” He says, his tone stressed.

“Hah, I know.” Bakugo smirkes pridefully.

“No— we’re not supposed to be here man, we just ditched class.” Aishi says.

Bakugo realizes what he’s been told. They can’t get caught until the school day ends and they’re allowed to be in the dorms. “Oh, uh.. yeah.”

He looks down at his hand, and Aishi’s two hands on top of it. Sure he’d been punched by Aishi, but he hadn’t been touched so delicately by him. Bakugo couldn’t say he wanted to be either. Those same slender hands from earlier.. he almost had to pry his eyes away from looking at them.

Bakugo couldn’t help but wonder if the rest of Aishi’s body was that.. appealing. The guy was chaste, refusing to undress in front of Bakugo to bandage his torso, rather he did it in the bathroom. It pissed him off. What’s the point of trying to be modest when you’re caked in blood and just beat the crap out of another guy? And then again.. nothing about this guy makes any sense.

They both perk up at the sound of a knock. Aishi opens the door to see Iida and Aizawa looking angry.

“Aizawa sensei…” Aishi says with a nervous smile.

He looks totally disinterested. With the ever-calm voice, Aizawa dishes the punishment.

“Aishi, this is your first offense so one day suspension. Bakugo, this is your…” He makes a show out of counting on his fingers. “Millionth offense. I’m close to giving up on you. One day suspension, and I expect the two of you to never do this again.” He grunts, before walking away.

Aishi looks at Iida with accusatory eyes. “Dude, you snitched?”

Iida shakes his head no. “I didn’t..” He says. “But-“ He puts a flat hand up. “you left a trail of blood! It was easy to follow and I don’t believe in lying to teachers!” He shouts.

Aishi gets a look at his hand. It’s big, strong and calloused. Could really do some damage.

“With hands like that you could surely pack a punch.” He says with a smirk. “Want to test that out?” He offers, putting his arms out to give Iida a wider target to hit.

Iida recoils and takes a long stride backwards. “No way Aishi san! I refuse to hit another student outside of necessary training exercises!” He shouts. Aishi looks disappointed and rolls his eyes.

“Alright then. Suit yourself. See ya later.” He waves goodbye and gives a peace sign before closing the door.

When Aishi turns around, Bakugo’s angry face stares back at him. “You didn't even try to talk Aizawa sensei out of that? You just TOOK suspension?” He scoffs. In his mind, Bakugo knows he also wouldn’t have attempted talking his way out of punishment from Aizawa, but Aishi doesn’t know that.

“It’s gonna be fine. We’re not trapped here.” Aishi says, sitting back down on the bed like nothing mattered. Bakugo didn’t look satisfied.

“Why’d you ask Iida to punch you?” He questions.

“Well, I dunno. He’s got strong looking hands. They could do some real damage.” That explains nothing— Bakugo still has no clue why Aishi wants to get punched.

“That’s not what I meant. Why do you want to be punched?”

Aishi looks at the ceiling dreamily, as if he’s reminiscing on a fond memory. “Isn’t it obvious?” He says. “I like to be hit.”

Bakugo almost laughs out loud, and then he realizes Aishi isn’t joking. This guy is really a masochist! He’d never conversed with one before, and to be honest, he had some questions. Bakugo considered himself somewhat of a perverted person, but he never understood the appeal of physical pain.

“But doesn’t it hurt? Does it like not hurt.. and instead feels good?” He’s having a difficult time formulating thoughts. “You know what I mean.” He spits out.

“Yeah I do. But, it’s not like that. It hurts the same way it hurts you, but I just enjoy it. Like the stinging and the redness and the adrenaline.” Aishi says. It’s like this guy was made to fight, and enjoying pain rather than fearing it makes a confident hero.

“Is that why you’re working to be a hero? Because you can use your enjoyment of pain as an asset?” Bakugo asks.

“I hadn’t considered that.. I just sort of thought heroes were cool. My reason for being one is sort of shallow, isn’t it?” He says with a small smile. After a while of being so rowdy, it seems like Aishi is back to his formal and polite self. “If I can help people by doing something I love— fighting, then I’ll be happy.”

Bakugo hadn’t thought someone could genuinely enjoy fighting villains. He himself liked the glory and praise and superiority that came with winning a fight. But the fight itself.. he wasn’t as into it as Aishi. But this recent fist fight he had.. that was really something else. It was brutal, fun, and there weren’t any sort of stakes.

“That’s pretty shallow.” He crosses his arms. “But.. I guess it’s not that bad of a reason.” Without realizing, Bakugo pouted like the tsundere character from every visual novel ever. In that very same instant he stopped, terrified of what might’ve happened if Aishi wasn’t looking down and fiddling with his own bandages.

Wait.. were those bandages he was messing with? Getting a closer look, Aishi seems to be desperately gripping the hem of his pants, attempting to conceal something. Bakugo knew what this meant. He’s.. got a boner. For what? For who? There’s only men in this room.

“Is that..” Bakugo shifted backwards on the bed.

“I’m so sorry.” Aishi says worriedly after realizing had noticed. “It’s just.. you know I’m a fan of getting hit. And all these wounds hurt.. You understand right?” He says quietly.

“If I leave it alone it’ll just go away. Again, sorry.” Aishi apologizes. “You can leave if this bothers you, but we can just keep talking if not.”

“Um..” Bakugo’s mind short circuits. He had never been in the presence of a boner other than his before. Does that mean Aishi’s horny? What could he be thinking about? Bakugo silently prays it’s nothing about him. “I uh.. I guess I don’t mind…” He can’t even get out enough words to call this guy a filthy perv. Not that Bakugo wasn’t one himself.

“I just realized,” Aishi said, using a pillow to cover himself. “You know all this stuff about me, but I barely know anything about you.”

“Tell me about yourself, ‘kay?” He says. The playfulness in his tone is not something Bakugo had expected. But, it wasn’t entirely unwelcome.

“Well, umm.. what do you wanna know?” He asks.

“I dunno, like, I like pain an’ being hit. What do you like?” Is this guy seriously asking what I’m into!? He can’t believe his ears.. but, he trusts this guy. His new friend, Ryota, is a good guy. A bit weird, yeah, but he means no harm.. unless he’s socking Bakugo in the nose.

“Ah, I’m not really sure. I’m kind of normal, you know? I don’t think there’s anything specific.” He doesn’t really know what to say. Asking about fetishes isn’t really something Bakugo had prepared an answer for. This dude is kind of creepy now that I think about it.

“That’s alright. Sorry. That question was weird.” Aishi says nervously. “I’m going to um.. go to the bathroom.” He stands up and rushes over to the bathroom, slamming the door. Bakugo isn’t sure what to do now.. he pats his legs absentmindedly.

His lack of thinking is interrupted by a weird, high pitched noise coming from the bathroom. Sounds like a whine. Is this dude really jerking off? Bakugo feels disgusted, but not angry. He tries not to process those sounds and assumes Aishi is just taking a particularly painful shit.

Aishi emerges from the bathroom looking a lot fresher. And the boner.. is down. Of course he was jerking off. “Were you…” Bakugo trails off.

“I might’ve.. but like— it’s not weird!” Aishi rushes to defend himself. “Just don’t talk about it. I swear I won’t let that happen again.” Aishi says. He’s sort of flushed.

It’s probably just from the fapping, but Aishi’s bashful face isn’t very bad to look at. Bakugo takes a deep breath, and decides he should leave for the day. He stands up and waves goodbye to his new friend.

“I’ll see you for suspension tomorrow, Ryota.” Bakugo says, closing the door before Aishi can ask him to stay. The instant that door is closed, Bakugo feels his heart pounding in his throat and a suspicious twitch in his underwear. Did Aishi really have this strong an effect on him? He had to get to his dorm ASAP, before anyone could see this rapidly growing erection.

Bakugo dashes down the stairs and into his room and slams the door. Well, less slams, more shuts it really fast and then right before it hits the doorframe he moves it slowly so it doesn’t make a sound. At this point, he’s got a raging boner for Aishi’s handsome face and appealing body.

He thinks about Aishi’s admittance to liking pain. What’s so good about it? Maybe.. just maybe, Bakugo could try that out. Just a little bit.

He had already taken care of his injuries from the fight earlier, so it was time for Bakugo to give himself new injuries. He thought about all of that self harm crap he saw on the internet. It was seriously bad.. but, Bakugo didn’t hate himself. He wanted to do it to feel good, not to feel “something.” He could always cut himself, but that would warrant the sort of attention he didn’t want. He sighed, this must be so easy for Aishi because he can die and regenerate whenever he wants. Bakugo actually has to consider scarring.

He takes a deep breath and lies down on his bed, ass up. Without too much thinking; too risky, he spanks himself. Once he snapped back to reality, he realized how weird and perverse that was. Another thing it was, was not nearly hard enough.

He slapped his ass again, harder. He tried to look to see if it left a mark, but the guy wasn’t all that flexible. The boner did not seem to be going down.

Bakugo was considerably dexterous, so he managed to position himself in such a way where he could pump his dick and smack himself at the same time. Spanking himself turned to slapping other parts of his body, and eventually that turned into plain ol’ hitting himself until it was purple.

He felt disgusting and perverted and so, so, good.

Bakugo doubled down.

He loosened the bandages wrapped tightly around his arm. There was a gash there from a punch, (he understood why professional fighters needed the punches to slide off) and he touched it. The blood was dry, so he scratched at it until it opened again.

He put two fingers into the hole in his arm and started wiggling them around. The sight was not pretty at all, and he thought about how convenient it would be to have slimmer fingers doing this task.

It made a nasty but admittedly erotic squelching sound that made Bakugo involuntarily whine like a beaten mutt. He bit his lip to conceal his own sounds. He hated when someone was too loud during porn, so he wouldn’t dare be hypocritical and make lots of noise himself.

Nonetheless, it did the job and Bakugo came hard into his other hand. That was the best he’d felt in.. he didn’t even know how long.

He almost puked then and there. But, thanks to what could only be identified as the grace of God (almight)y, he held it in and calmed himself down. He was hot for this sort of stuff and he’d only discovered it maybe an hour and a half ago? He’d never taken to a fetish this quick before.

He thought back to Aishi’s question, “What do you like?” In the sexual sense of course. He could have said a woman with big tits and a tiny waist— but that wasn’t particularly a fetish, and this is no heterosexual story.

Katsuki Bakugo could identify two new fetishes acquired just in this past hour: Pain, and hands.

///

The very next school day gave way to a lot of new issues. He was trapped in suspension with a boy he had the hots for. He still had scars and bruises and was bandaged, so Bakugo came to the conclusion that Aishi did not die and regenerate last night. He seriously wondered what that process looked like.

They both made their way into the suspension room and were handed textbooks by Aizawa sensei. Bakugo groaned, but Aishi didn’t really seem to mind. The weirdo looked excited. Bakugo could not see his own masochism going past physical pain and bleeding (ha) into mental torture.

Aishi’s uniform was pristine again, just like it was yesterday right before the two of them fought. It was pressed and ironed and well taken care of. Bakugo wonders if he did that all this morning.. well, not like it mattered.

Aizawa left and shut the door after giving the boys a harsh reminder of school code and why you shouldn’t bloody someone up for fun. Bakugo took the courtesy of locking the door so no one would interrupt them doing whatever they were going to do.

He kicked his legs on the table and put his hands behind his head in such anime fashion and turned to see Aishi— actually doing the work!?

“Dude, Ryota, they don’t check that. It’s just busy work.” He spat out. Aishi looked up, confused.

“ ‘S it really?” He sighs and closes the textbook. “Whatever.”

Bakugo eyed his friend’s hands. The redness went down only slightly. He was annoyed that he didn’t get a good look at Aishi’s pretty hands when they were in peak condition. He wondered what those long slim fingers could do. He wondered what Aishi wanted to do to him, since yesterday he did have a boner out of seemingly nowhere.

Being a virgin, Bakugo had no clue how to initiate anything sexual at all. He, reluctantly, had come to the conclusion after orgasm number two that he wanted to have sex with Aishi. I mean, he was just really good looking! Who wouldn’t?

“Want to fight again?” Bakugo asked. That’s not quite sex, but it’ll do for now.

Aishi perks up, as expected, and nods like a dog who had been trained to do so. “You know I do!”

They both stood up, now taking the initiative to take both of their shirts off, but it was clear Aishi didn’t want to do so. He turned around so Bakugo could only see his bare back. Skinny, but not that skinny. There was obviously muscle there, but the guy had a dainty looking waist that Bakugo was practically frothing at the mouth for.

He slipped on a beat up hoodie that came from essentially thin air, and it did a good job of covering him up unfortunately.

They took their places in the makeshift arena, fists up, just like they did last time. Bakugo dished out the first punch, a left hook to Aishi’s cheek. It might’ve knocked out a tooth, but it didn’t matter, Aishi could fix it later with that quirk of his.

Aishi punched Bakugo square in the stomach, forcing him to make a moderately lewd sound instead of a grunt. He blushed only slightly. He tried not to think about how hot that punch was. It would surely leave a bruise. He pretended to be open again, and Aishi kicked him in the shin and punched him in the arm at almost the same time. Involuntarily, he made that lewd whine again

Aishi didn’t really seem to notice, as he’d gotten into the zone. He was dicing kicks and punches from every angle, and Bakugo couldn’t really get a hit in, since it was becoming increasingly clear this was more of a sexual thing than anything else.

Finally, after Aishi almost punched Bakugo’s groin, he stopped short and realized the guy had an erection.

“You um.. you have a—“ “I know.” Bakugo said harshly. He was trying as hard as he could to keep himself composed. Confidence is key, and he needed to live by that or he’ll die of embarrassment.

“Do you wanna take care of that?” Aishi says, standing up straight and brushing himself off.

“You’re making it hard to. Hah, hard.” Bakugo chuckles aloud at his own joke like a dimwit. “You’re too clothed. I can’t finish.” In his mind, he repeated over and over again that he had to stay confident, or this wasn’t going to go the way he wanted.

“Too clothed?” Aishi began to catch on to what he was implying. He smirked, and lifting the hoodie only slightly to reveal he had an erection too, tucked under his waistband so it wouldn’t show.

“Y-Yeah.” Bakugo tried to not express the effects the knowledge of Aishi’s boner had on him.

Aishi put a finger over his own mouth. “I’ll take it off, but you can’t tell anyone what you see, alright?” He says with a cheeky smile.

Bakugo nods profusely, thirsting like the rest of you to finally get on with the good stuff.

He pulls the ratted hoodie over his head, and smack in the middle of his chest is a brand. What? Bakugo was incredibly confused. He was branded? By who? Why? Better yet, how come it didn’t go away when he died and regenerated?

“What…” He was at quite a loss. “Why? Why are you branded?” He asked, purposefully ignoring how the idea of Aishi getting branded was one of the sexiest things he could think of.

“The fight club, remember?” He said.

“What!? I take back what I said— I don’t want to go there if I’m gonna get that!” Bakugo shouted, waving his hands back and forth.

“No, no, it isn’t like that. There was this guy I fought a while back, and he made a show of branding the opponents who lost. Had to go through a questionnaire an’ everything to make sure I was totally fine with it.” That’s.. sort of an interesting story.

Bakugo never imagined that they would go that far in a simple fist fight.. but he came to realize both the entertainment for the fighters, and the crowd was necessary to get people coming back for more. It probably made a serious buck.

By now, the writing on the brand was sort of unintelligible. The letters were small, and there was a thick line underlining them. It didn’t make a lot of sense, and it probably hurt like hell, and Bakugo was not as reproached to the idea himself anymore. He would put that on his bucket list later, but otherwise he had to focus on the rest of Aishi’s gorgeous assets.

He had a waist thin like a girl’s, milky white skin, and hard lines of muscle and tone. It was hot, no doubt about that. But, despite being taller, he was thinner than Bakugo. He was somewhat unfamiliar with the rules of gay sex, so he didn’t know if being thin or being short automatically made you the bottom. That’s what he’s seen in media anyway.

Bakugo, now a proud masochist, did not want to be the one dishing out the, well, penis. He wanted to be the one to receive it. To receive Aishi’s penis. He had to voice this without sounding weak. As much as Bakugo knew it was perfectly respectable to take the feminine role in a relationship, he was still embarrassed.

“You can.. um..” His voice can’t seem to make out the words.

Aishi raises an eyebrow, reveling in how awkward Bakugo is, as he rarely was.

“You can put it in.. me.” He says, his face shining a bright red all the way up to his ears. It was cute, as much as he didn’t want it to be.

Aishi moved in right in front of Bakugo, putting a hand on his shoulder. Damn those skinny little hands.. they were too much.

“I understand.” Aishi said with a wink, and pulled him over to a desk. He grabbed Bakugo’s muscular butt and plopped him right on top, so his legs were on either side of Aishi’s hips.

He seemed to take notice of Bakugo’s interest in his hands, so Aishi chuckled. “You like ‘em? Here, suck on them and make my fingers nice and wet.” He said.

Bakugo obliged and obediently began licking and sucking on his fingers. He felt like a natural, and it certainly wasn’t because he practiced by sitting on his hand until it was numb and pretended it was Aishi’s.

Aishi scissored the fingers in his mouth, pumping them in and out over Bakugo’s tongue. He looked hard at work, determined to do a good job, and as a result, his face wasn’t sexy at all. It was just that scowl he always seemed to have.

With the hand not currently covered in saliva, Aishi tilted up Bakugo’s head so he’d look him in the eye. “Hey, hey, relax.”

Aishi was sort of embarrassed to say this, and he really felt the shame of his vanity, but it was really important to him that the other person looked cute during sex. He couldn’t fuck someone who made an ugly expression.

“Lookin’ cute’s your priority, okay? I’ll worry about making you feel good.” Bad? Would he want to feel bad too because he’s a masochist? No clue, we’ve lost the plot.

Bakugo nodded and softened up his face. In his relaxed state, a small tan like from his scowl was noticeable. Not really that much of a turn off, but funny regardless.

Once his fingers were sufficiently wet, he lifted Bakugo’s legs up and put his inner knees on his shoulders, so he’d lay down on the desk. He made quick work of pulling off Bakugo’s pants and boxers, so he was completely ass naked. It was super sexy.. like Bakugo was begging to be taken advantage of. In this state he looked so docile and cute.

Aishi took a lubed up finger and pushed past the ring of muscles guarding Bakugo’s most precious area. It wasn’t very difficult, since it was already twitchy and soft. He wondered if Bakugo had played with it before. Probably not, too prideful. He likely hadn’t ever envisioned being on the receiving end before today.

Bakugo bit his lip to restrain his erotic noises, but it could only muffle, not completely eliminate them.

“Nnn… mmh..” High pitched and needy and painfully adorable were his whimpers. He sounded and looked like a sad, desperate kitten.

A second finger went in, warranting more cries of pleasure that were harder to contain. He didn’t want to torture the guy, so Aishi made well sure Bakugo was all loosened up. He wiggled his fingers around, searching for the sensitive prostate. After a jolt and a curl of his long middle finger, Bakugo cried out and arched into the touch.

“Found it.” Aishi said teasingly.

Bakugo couldn’t handle this. His pride, his confidence, his manliness all flew down the drain in a matter of seconds. Now he was a sweaty crying mess, a real sexy one with heroic muscles.

Bakugo couldn’t form much thoughts, but he seriously was curious as to how Aishi got so good at pleasing another man. He had friends in Tartarus.. and ones at the fight club.. would he have sex with those people? The idea of Aishi ravaging a villain was appealing to say the least. But— not when it’s him!

“Ahhn!” He cried, forcing his hands to cover his mouth. He reminded himself to look cute, so he wiped the drool and tears off of his face. He tried to focus his eyes on Aishi, but it was entirely too difficult while his ass was being split by some fingers.

Comically, Aishi bent over to get a look at Bakugo’s asshole, examining it like a proctologist. He pulls his fingers out, and wipes the cloudy bum juice onto Bakugo’s leg. He’s too overstimulated to care about that insignificant sensation.

Finally, Aishi frees his dick, which has turned a painful red color from the restraint it was forced to endure. Bakugo looked at it with a collection of different emotions; Eagerness, terror, anticipation, and reluctance. It wasn’t small, that’s for true. It was bigger than he thought it was going to be, and unlike Aishi’s more lean and slim body, it was thick and strong. Shaved and cut thankfully, since Bakugo didn’t find body hair hot, man or woman.

He lined up the disgustingly huge dick with Bakugo’s asshole, and right before he’s about to slam his shit in, Bakugo touches his hand.

“Ryota..” He whined. Cute expression, obviously. Aishi’s face turns red. “You know I like to be hit too, right?” He asks.

Aishi smirks. Actually less of a smirk, more like a maniacal grin.

“Yes?” He says, practically already praying for what Bakugo’s gonna say next.

“Can you… ah, hit me.. when it’s in?” He asks bashfully. Little Ryota chan starts leaking from arousal at those sexy words. A promise of pain and pleasure and raw manliness.

Aishi considered taking him out for a beer after this. If he could walk, that is.

Aishi nods and gently, at first, pushes his tip into Bakugo’s ass. He bites his arm as hard as he can, but that just ends up turning the guy on more, so his cock leaks and throbs painfully.

Bakugo prided himself on being able to last, but now he’s got to beg the Lord for strength to keep the nut in his balls.

In one swift motion, the rest of Aishi’s dick finds its way into Bakugo’s not-nearly-stretched-enough asshole. In and out over and over again, and he felt like some sort of sex doll. Surely he looked the part with those perfect muscles, glistening with sweat. It didn’t smell good for certain, and the raw, pungent, smell of sex was definitely radiating out of the room.

“Gaaahhhnn!!” Bakugo cried and bit down on himself harder. Aishi moved his hand and quickly punched him in the face.

Blood dripped down his nose, and he was already planning the excuse he’d use to explain a black eye to Aizawa sensei.

Again, Aishi punched him as he thrusted in and out. It felt like Bakugo was getting impaled. To any regular person, this would have been torture, but Bakugo couldn’t get enough. The punches didn’t stop, as Aishi shared the same erotic enthusiasm.

Bakugo clenched his legs around Aishi, squeezing his already small waist even harder.

They both finished together, Bakugo’s cock spurting out a fat load of cum that splattered across his strong torso and face. He licked the corner of his mouth, but scowled when he realized cum didn’t taste as good as people made it seem. Rest assured he wouldn’t let Aishi shoot a load into his mouth anytime soon. Aishi’s dick shot the thick white liquid far into Bakugo’s insides, surely painting them white for days to come.

“You, haah, ah, really milked me dry.” Aishi said, pulling out his cum-coated cock. He reached down and grabbed his blazer, where, in the pocket, was a condom. Bakugo scoffed.

“Idiot. You really are useless aren’t you?” He took a hand to his forehead and didn’t even care to acknowledge the sperm that was leaking out of his now enlarged hole.

Aishi patted Bakugo’s newly bloated stomach. “ ‘S this mean you’re having my kids?” He chuckled, and Bakugo looked terrified.

“Your quirk can’t do that, right..?” He didn’t think so, but in modern society anything was possible. Regardless, he was terrified. There’s no way he would finish pro hero training during all the difficulties of pregnancy.

“No, no. But I’m sure if we did have kids they’d grow up to be sick fighters.” Aishi chuckled, tossing Bakugo some wipes, while cleaning up his own messied dick.

“Whatever fuckface.” Bakugo spat. He began cleaning the cum off of his face.

“Now don’t give me any ideas~.” Aishi teased.

Notes:

hope you enjoyed! i like to imagine in the future bakugo did actually have aishi’s kids. how funny would that be? kudos and comments are appreciated, always happy to meet folks who like seeing tough guy characters get their asses fucked an beat!