Icebreaker [NSFW]

Warning: They're technically underage in this (at high school) so take that as you will.

─────

“Oh! A new addition!” Izuku grinned, marching over to the classroom door and pointing at his name tag. “Hi there! My name is Izuku, I run this group. And you are?”

“Katsuki.”

“Welcome, Katsuki! I don’t think I’ve seen you around before, are you new here?”

Katsuki eyed him over, nodding faintly as his sharp red eyes raked up Izuku’s body.

“I’m an exchange student,” he answered slowly. “I heard I could… Practice my English here.”

“That’s right! You seem really good already! Come on in, meet some of the others!”

He led the way around the classroom, pointing out different groups and pairs and rattling off their names, but Katsuki just nodded faintly in response, eyes still locked on Izuku the entire time. When they’d made the rounds, Izuku sat down, gesturing for Katsuki to join him on the other side of the desk. Maybe the guy was just a little shy, Izuku was an expert at that! He’d get him settled in in no time!

“So,” Katsuki said quietly, looking straight into Izuku’s eyes. “You come here often?”

Izuku couldn’t help but laugh, clapping a hand over his mouth to hide it, but Katsuki didn’t seem to be offended. It had been years since Izuku began the group, helping all their foreign exchange students to practice conversing in English, and at this point he’d heard everything. Katsuki couldn’t shock him if he tried.

“I do!” he answered, grinning still. “I run the club, and a bunch of the people here are my friends and classmates, they volunteered to just come in a few times a week and talk with people! They’re all super nice, I’m sure you’ll have a lot of fun talking to them. How long have you been learning English?”

“Mm… A few years,” Katsuki hummed. “Our teachers were pretty shit, I learned most of it online.”

“Oh, that’s neat! Like, from online courses?”

“No, just watching TV shows and streamers and shit.”

“Oh wow! Um, where do you come from, anyway?”

“Japan. Near Shizuoka.”

“Oh my God! My parents are Japanese but they moved here before I was born, Dad got a really good job offer here. We could have been neighbours!”

“That would’ve been nice,” Katsuki smirked, leaning his head on one hand. “Could’ve gone to school together.”

“Yeah!”

“I bet we’d have had Chemistry together.”

“Are you in to science? I’m a huge Physics nerd, I know it’s weird.”

“Smart and pretty, that doesn’t seem fair.”

Izuku blushed bright red, waving his hands awkwardly, but Katsuki just grinned at his embarrassment.

“You’re too kind,” he stumbled out. “Uh, you’re very handsome yourself!”

“You must like math, too, huh?”

“Yeah! I do!”

“I’m pretty good at algebra, I can replace your X and you wouldn’t even need to figure out Y.”

Izuku looked a little puzzled at that, and it took everything Katsuki had to not roll his eyes – but hey, maybe his delivery was off, or his accent, or something. Izuku wasn’t that oblivious, surely.

“You actually look pretty familiar,” he offered instead, while Izuku was still mumbling to himself – God he was cute. “I’m pretty sure I’ve seen you in my dreams.”

“W-Well, that’s uh, really interesting! I guess I just have one of those faces, you know? Super, uh, plain. I look like a thousand other people.”

“No, definitely not plain. Maybe you’re a time traveller.”

“W-What?”

“Yeah, like you came back from our future. Together.”

The bell rang just in time, Izuku stuttering like a gorgeous idiot as his entire body turned red, but Katsuki just gave him a smirk as he pushed his chair back.

“I’ll see you tomorrow,” he winked. “For more… practice.”

“Y-Yeah. It was nice meeting you, Katsuki.”

“I’ll be on time, next time. Don’t want to waste a second of our time together.”

He heard laughter behind him as he walked out, and a cute little whine from Izuku that he would never be able to forget.

He’d hated the suggestion, when the stupid guidance counselor told him to go along to the group, but she might just have become his favouriteperson in the whole damn country. He’d have to buy her flowers or some shit.

Maybe send her an invite to their wedding.

─────

“Hey! Katsuki!”

He looked up, raising an eyebrow when the dude with bright red hair came rushing at him, slinging an arm around his shoulders. He’d never get used to how touchy the westerners were, it was weird as hell.

“Remember me? Eijirou? It was good to see you at English club!” he grinned. “I didn’t even know you were a foreign student, your English is so good already!”

“It’s alright,” he shrugged. “I don’t talk as much as I should.”

“Is that why you’re so quiet? You’re nervous?”

“Nervous?” he snorted. “No. Why say five words when one would do the job?”

“Because it’s fun! Conversation isn’t about efficiency!”

“I guess.”

He paused, shoving his hands in his pockets, and Eijirou grinned at him knowingly.

“Izuku?” he prompted, nodding. “I know, he’s cool. You wouldn’t be the first exchange student to end up with a massive crush on him. He doesn’t really date, though, at least not that I’ve seen.”

“I don’t have a crush on him,” Katsuki snorted. “I just want him to fuck me.”

Eijirou stared at him for a moment, wide-eyed, before he burst out laughing.

“You had me going there!” he grinned, clapping Katsuki on the back fondly. “I believed you!”

“I wasn’t kidding.”

“Wait, really?”

“Isn’t that what you people do? Hook up with other random teenagers? Make out in public?”

“Well… Some people, I guess,” Eijirou admitted. “Not all of us! Um, not Izuku, that I know of?”

“Damn. Maybe I’ll have to take him out after all.”

“You could ask him on a date? The worst he can do is say no, right? If he rejects you, you can pretty much avoid him for the rest of your life anyway.”

Katsuki smirked as they stepped into their classroom, shaking his head when Eijirou sat down beside him without question.

“There’s no way he rejects me,” Katsuki said firmly. “If he says no, I’ll just keep asking.”

“That’s so manly! Or, wait, is that stalkery? Nah, that’s manly!”

Katsuki went quiet again when the class began, focusing on his work, but Eijirou just kept blabbering. Katsuki wasn’t sure he’d said as many words in his life as Eijirou did in that one class period. Still, he supposed it was good practice – he was meant to be there to learn more English, right? Experience another culture? Eijirou was sure as hell different from what he was used to, and he talked so damn fast that Katsuki struggled to keep up, so that counted as practicing too, right?

“What if I tell him I’ve forgotten the way home?” Katsuki asked, ignoring whatever Eijirou was on about.

“What? Izuku? Why, so he’ll walk you home? That would be cute!”

“I’ll tell him I lost my address. He’ll be obligated to take me home with him, right? Then I can make my move on him at his place.”

“Hmm… Well you could certainly try. Is he really gonna believe you forgot your address, though? I mean, you’re way smarter than that.”

“But he doesn’t know that.”

“Worth a shot, then!” Eijirou laughed. “Good luck, man, I’m rooting for you!”

“I don’t know what that means.”

─────

Katsuki looked up when the group drew closer, locking eyes with shiny emeralds that he could just stare into all damn day. Izuku grinned, raising one hand in a little wave, and Katsuki straightened up off the fence where he’d been leaning for a good ten minutes in wait.

“Hi, Katsuki!” he beamed, raising one hand in a little wave. “Waiting for someone?”

“I forgot my address.”

“Oh no! For where you’re staying?!”

“Yeah. Can I come with you instead?”

“Sure! See you tomorrow guys!”

Well that was easy.

He waved goodbye to the girls he was hanging out with, taking Katsuki by the hand and making him burn bright red. He was so busy being flustered that he didn’t even notice when Izuku led him back into the school grounds, dragging him back to the front office where he’d been dropped off earlier that morning.

“Hi!” he said brightly, leaning against the office desk. “Katsuki has forgotten his address, do you have it on file?”

“Oh?” she asked, eyeing Katsuki’s burning face. “I see, let me take a look.”

Katsuki cursed under his breath, unnoticed by the big, dumb, oblivious nerd, and watched as she scribbled something down on a piece of paper.

“Here you go, Katsuki. Strange, I thought you said you saved it on your phone. Did you forget?”

Katsuki’s face turned impossibly redder, and he stuttered a little when he opened his mouth – god damn, who was he? Since when did Bakugou Katsuki get flustered?

“My phone died,” he said, after a brief pause. “I uh, my charger doesn’t work here.”

“Mm-hm,” the lady hummed, eyes flicking to Izuku’s goofy smile. “I’m sure it did. Izuku, would you mind taking care of him?”

“Not at all!”

Katsuki breathed a sigh of relief, letting Izuku read the scribbly handwriting, and together they headed back out to the gates, pausing as Izuku pointed down the street.

“Okay, you’re the same way as me!” he grinned. “I’ll walk you, okay? Don’t want you to get lost!”

“Thanks.”

Izuku chattered a little as they walked – much less than Eijirou, thankfully – but mostly they just walked side by side, enjoying the warmth of the sun. Izuku hummed quietly to himself, watching birds dart by, but Katsuki froze when he saw a much bigger creature scurry by.

“Was that a rat?” he demanded, glaring into the bushes. “Gross!”

“What? Where?” Izuku looked around, eyes growing wide as he caught on. “Are you talking about the squirrels?”

“Is that what a squirrel looks like?!”

“You’ve never seen one?! Are there no squirrels in Japan?!”

“No! Well, I think there’s a type, but I’ve sure as hell never seen one.”

“Oh! Come look, then! They’re very cute!”

“They’re rodents.”

“Cute rodents!”

He grabbed Katsuki by the hand again, dragging him across the street to get closer, and Katsuki pulled a face as he peered over the fence to look. They were a lot bigger than he’d always imagined them, though the tails were just as bushy as the pictures, and… yeah, okay, they were kinda cute.

“If we dyed one green, you’d match,” Katsuki mused.

“What, because we both have messy hair?” Izuku laughed, shoving him lightly and winking. “Or because we’re both cute?”

“Yes.”

“You weren’t meant to agree!”

“I already told you I thought you were cute.”

“I thought you were kidding!”

Katsuki shrugged, turning to continue down the street, and Izuku hurried to catch up. It took him far too long to realise Katsuki was leading the way home, apparently only catching on once they reached the front gates and Katsuki waved awkwardly.

“Make sure you get a phone charger for tomorrow! Don’t want you to get lo- Wait. You weren’t lose at all, were you?”

Katsuki just smirked, letting himself into the garden, and Izuku chuckled as he watched from the street.

“Next time just ask me to walk you home, you don’t need to make up a sob story!”

“You’re the one who fell for it, ya Deku.”

“What’s that supposed to mean?”

“Hmm, I wonder,” Katsuki shrugged. “Pick me up at eight tomorrow?”

Izuku folded his arms, but conceded a little sigh, nodding faintly.

“Fine,” he agreed. “But only because it’s on my way!”

“Sure, nerd, keep telling yourself that.”

“I’m serious!”

“Uh-huh, okay. G’night Deku, see you in the morning.”

“Goodnight Kacchan.”

“Look at us, already at the pet names stage, how cute.”

“See you in the morning,” Izuku giggled.

“See ya.”

─────

“Oi, kid, I called dibs so move on.”

“Kacchan!” Izuku insisted, shoving him lightly. “You don’t just get to call dibs on me, you can talk to other people too!”

“Nah, I ain’t here for them, this is my only chance to talk to my boyfriend during school.”

“First of all, you never asked me to be your boyfriend, and second, we walked to school together just a few hours ago! And we’re walking home together in a couple more!”

“I said during school though.”

“Ugh, you’re so clingy.”

“And you love it.”

“I’m still not your boyfriend.”

“Not yet.”

The student moved on while they bickered, leaving them to their nonsense, and Katsuki sat down triumphantly on the edge of the desk. Izuku just sighed at him, head in his hands, groaning as Katsuki swung his feet happily.

“You’re killing me,” Izuku grumbled. “You need to stop teasing me, I can’t focus.”

“Who said I was teasing, asshole?”

Katsuki swung a leg over the desktop, nudging his foot into Izuku’s lap, and Izuku flooded bright red. Making a split-second decision to test his boundaries, he nudged at Izuku’s leg, prying them open a little and stroking along the soft inner thigh. Izuku’s breath hitched, and Katsuki’s smirk grew wider, sliding a little higher to test the waters.

“You’re such a little brat,” Izuku hissed, grabbing his ankle to halt him. “Behave yourself.”

“Make me.”

“Be careful what you wish for.”

“What are you gonna do, spank me?”

Izuku’s eyes narrowed, and he leaned in closer, making Katsuki’s heart pound a little harder.

“Is that what you want? You want me to punish you for being naughty?”

Katsuki didn’t realise he was nodding until Izuku smirked, and oh, that was really hot. God damn.

“Well then, maybe you should start by being a good boy and actually asking me out.”

“Please,” Katsuki choked out. “Be my boyfriend, Deku.”

“You’re lucky you’re cute.” Izuku grinned, cupping Katsuki’s chin in his hand. “Fine, where are you gonna take me?”

“Uh. Dinner?”

“That sounds good.”

“Y-Yeah. Um. You know what’s on the menu? Me ‘n you.”

“You can stop with the bad pick up lines, I already said yes.”

“They’re the only English I can remember right now.”

Izuku dragged him down, bent over double to make their faces level, and planted the tiniest, gentlest little kiss on Katsuki’s lips, making him whine.

“Flexible,” Izuku smirked, eyeing him over as he twisted around a little to get more comfortable. “I’m sure we can put that to good use.”

“Please.”

“At least you remember that one.”

He kissed Katsuki a little deeper, and Katsuki felt his pants tightening, dick rock-hard beneath them. He knew if he tried to stand up it was going to be painfully obvious to anyone who looked; not to mention he might pass out since every ounce of blood in his body had gone from his head to his head.

Behind him, someone cleared their throat, and Izuku bolted upright, wide-eyed as he stared at the little cluster of people watching. Katsuki whined, reaching for him to drag him back, but Izuku just grabbed his hand to halt it.

“S-Sorry!” he squeaked. “I-I think Kacchan got a little c-carried away with the teasing, huh?”

“Shut up and fuck me.”

“Kacchan.”

“Fine, we’ll go to the bathrooms or whatever, jeez.”

“Kacchan!”

“Come onnn, aren’t you westerners meant to be permanently horny or some shit? I’ve seen your TV shows. I’ve got the lube, let’s go.”

“It’s the middle of the school day!”

“And we’ve got another forty-five minutes of lunch, come on.”

He shifted his hand to link their fingers together, sliding off the desk, and despite every piece of his brain screaming at him, Izuku let himself be dragged to his feet.

“Ah, s-sorry, guys, um- Just let me go and- and calm Kacchan down, I’ll be back in two minutes!”

“Two minutes? So you are just as horny as me.”

“Shut up!”

He huffed, dragging Katsuki out to the hall, only giving him enough time to look back over his shoulder and catch Eijirou’s eye, smirking at the look of disbelief on his face.

Katsuki always got what he wanted.

Case in point, Izuku led him straight to the bathroom, and Katsuki reached into his backpack with a grin to produce a little black bottle. He’d never realised it was so easy to get lube now, back home he’d have had to take a special trip to the right store, but all he had to do here was go to a convenience store. Weird as hell, but super convenient at least. He shoved it in Izuku’s hand, getting a raised eyebrow for his efforts, and followed as Izuku led him into the accessible stall.

“Is there anyone in a wheelchair at this school?” Katsuki teased, hanging his backpack on the door to get it out of the way.

“People with other disabilities use these stalls too, Kacchan,” Izuku huffed. “But no, no wheelchairs, and heaps of accessible toilets.”

“Oh good, we’ll never be far from one when we need it.”

“That is not what I meant.”

“Suuuure it isn’t.”

Eyes narrowing a little, Izuku pushed Katsuki up against the wall, yanking his pants down and smirking when he saw the swollen cock spring out. Katsuki breathed a sigh of relief at the freedom, but it was short lived as Izuku turned him around roughly, shoving him up against the cold wall.

“You need to learn to behave in public,” Izuku said firmly, slapping a hand down on Katsuki’s ass. “Little slut.”

Katsuki moaned, the sound echoing throughout the room, and Izuku could only laugh quietly as he spanked him twice more.

“You talk a big game, acting all proud and in charge, but really you just want someone to put you in your place, don’t you, Kacchan? You want someone to hold you down and fuck you so hard you can’t concentrate in class for the rest of the day because your ass is so sore?”

“God, yes.”

“Then beg.”

Katsuki whined, pressing into the wall a little in search of friction, and Izuku laced a hand through his hair, pulling his head back to see the desperate look on his face. He pleaded with his eyes, praying it might be enough, but Izuku just spanked him again, the sting spreading across his asscheeks.

“Tell me, whore.”

“Please,” he gasped, face burning despite the cold wall pressed against his skin. “Please, Sir, fuck me. Use me like a- Like a good little whore. I’ll be good for you, I promise, so please.”

“Fuck that’s hot,” Izuku hummed, leaning in to press his hard cock against Katsuki’s ass, the thin fabric of his school pants doing nothing to hide it. “Don’t worry, baby, I’m gonna.”

“Fuck yes.”

Izuku squeezed a generous amount of lube onto Katsuki’s ass, using one finger to gently guide it inside of him, but when Katsuki clenched on his fingertip he couldn’t help but laugh.

“Relax, Kacchan, I’m not going anywhere.”

“Just hurry up.”

“No, I’m going to take as long as I want, and you’re going to like it.” Izuku grinned. “So you’re gonna be a good boy for me and relax, aren’t you?”

“Ugh. Fine.”

“I think you mean yes Sir, right?”

“Fucking- Yes, Sir.”

“There’s my good boy.”

Katsuki’s stomach swirled at the praise, and he pressed his hands to the wall to keep from punching something to counter it. There was a warm patch forming beneath his stomach, but where his lands landed was still pleasantly cool, grounding him as the long, thick finger slid inside him. It moved with an almost sweet touch, so gentle and slow, and Katsuki hated it.

“Just fuck me,” he hissed. “Please. Sir. Just… Ugh.”

“I don’t want to hurt you.”

“It’ll be fine.”

Izuku huffed, but he moved a little quicker all the same, slipping another finger in and making Katsuki moan as they stretched him wide.

“Yes. Hell yes, fuck, just like that.”

“Little slut,” Izuku teased, leaning in to make little nips along his neck. “You like this, huh?”

“Hell yes.”

“Good boy.”

Katsuki whined, and for a moment Izuku fell still, surprised by the noise. He recovered quickly, though, sucking lightly at Katsuki’s neck and watching his head fall away to make more room.

“So good for me,” he whispered, adding a third finger. “I love seeing how you respond, Kacchan. These sweet sounds you make for me, the way you move just right under my touch, you’re perfect.”

“Fuck,” Katsuki hissed, pressing his forehead into the wall. “That’s enough, you’ll fit.”

“You sure?” Izuku teased, rubbing his crotch against Katsuki’s buttcheek. “Think I’ll fit in that cute little hole of yours?”

“Easily,” Katsuki snorted. “Don’t start this monster-cock shit.”

Izuku laughed, but he shed his pants all the same, running a lubed hand over his dick to get ready. Katsuki arched his back a little, poking his perky ass out at Izuku, smirking when it made him take in a long, slow breath to prepare.

“Ready?”

“Been ready for days.”

“We met yesterday, Kacchan. Fuck, are we seriously doing this after two days?”

“Don’t chicken out on me now, Sir.”

Izuku chuckled, but his big hand gripped Katsuki’s asscheek all the same, spreading him open a little wider and start his slow, steady push. Katsuki moaned louder than he thought he ever had before, savouring every moment of it, using every ounce of control he had in his body to stop from clenching down. Izuku leaned ever closer, his thick thighs pressing Katsuki tighter into the wall, and when his hips met Katsuki’s ass, Katsuki finally gave in and held on to him. He reached back with one hand, fumbling for a thigh to hold onto, but Izuku just linked their fingers together and gave him a squeeze instead. Katsuki responded by squeezing with his ass, and Izuku laughed at him, breathless and strained as it was.

“I wanna fuck you, Kacchan. Need you to relax.”

“Don’t you dare stop.”

“I won’t, I promise. Trust me, okay?”

Katsuki nodded, easing off, and Izuku began to move again. He slid out a little, paused, then rammed himself back in, pleased when Katsuki made more cute little noises for him in response. Again, and again, the stall door rattling with how much impact they were putting into the walls, and the entire bathroom filling with their matching whines and moans, their gasping breaths as they tried so desperately to keep moving. Katsuki arched back to meet Izuku’s thrust, bending his knees a little and shifting his body until he found exactly the right angle, the one that made him want to scream when Izuku hit it just right.

He barely had the air to choke out any words, but he managed to splutter a breathless yes on a particularly rough thrust, and that seemed to spur Izuku on. He shifted his hands to Katsuki’s hips, holding tight on either side and pulling him in to each thrust, growing more fervent and frantic with each one.

Just as Katsuki thought he was going to burst, Izuku’s hands moved again, and this time one blessedly wrapped around his dick, jerking him in tandem. His jizz was spilling down the bathroom wall before he even had time to think, and Izuku was biting down on his neck again, a little rougher this time as he filled Katsuki’s ass with hot fluid.

He reached for the toilet paper, giving Katsuki a quick wipe as he pulled out to keep his dropped pants clean, and for a minute the bathroom fell silent.

“Hey Kacchan?” Izuku finally breathed, chest still heaving with the exertion. “How are we gonna explain this to the conversation club?”

“We?” Katsuki snorted, levering himself up off the wall. “You think I’m going back to that nerd-fest now that I’ve got what I came for?”

“Kacchan, don’t be mean.”

“Later loser, see you after school for our next date.”

“Charming.”

“I’ll buy you dinner, my parents sent me money.”

Izuku laughed, his tired smile surprisingly infectious, just watching fondly as Katsuki pulled up his pants and grabbed his backpack to leave.

“See you after school,” he agreed. “My parents don’t get home ‘til six.”

“Perfect. Be ready for round two, nerd.”

“Always.”