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Ever since Katsuki was a child, he has only had one mission. Become number 1. He would do anything to achieve that goal. Whether that was training himself to the bone, isolating himself from his peers to study, following a strict diet with no exceptions. Anything.
He's been that way his whole life. Nothing would stop him from reaching his goal. Not his mother, not his own fears or doubts, not even the fact that UA, a school for future heroes, chained him up in front of the entire school and broadcasted it on live television.
Yeah, that one may have stung a little.
But it didn't matter. He's still in the hero course. Still on his way to becoming number one. Even after his heart exploded, he healed (physically), and moved on. As he does with everything. He moved past it and never looked back.
Well, that may not be entirely true. The nightmares that plague him in the middle of the night didn't go away, the fact that he tenses at even the slightest touch didn't go away, the way he examines every room he's in for escape routes and potential weapons didn't go away. But that doesn't matter. He will be number one.
And then there's that green little parasite known as Izuku Midoriya. Always observing every little detail, no matter how personal or how much not-his-business it is, which is a huge invasion of privacy if you ask Katsuki. Now, could Katsuki have handled it in a different way? Yes, of course. But it's hard to be a teenager propped full of hormones, following the strictest of diets and training regimes and being yelled at by his mother for every little thing and then on top of that having this little annoying kid rambling in his ear 24/7 and practically stalking everyone.
Not that it justifies his actions of course, but he's getting better. He even apologized.
Right now though? He's suffering through english with Present Mic. Is it really necessary to be yelling that loudly in such a small classroom? Apparently so.
Katsuki has never struggled with english, so he's twirling his pen around his fingers and zoning out completely for the entire lesson.
When the bell finally rings, he's the first person out the door. He makes his way towards the dorms, determined to finish all his homework so he can get to training.
He's not a nerd. He just... cares about his future. You can't be the number 1 hero with sucky grades. That's not a problem for him though, he has always naturally excelled in every subject, and if he didn't, he studied until he did. He gets his homework done quickly, English and math, the two easiest subjects in his opinion, and makes his way to the training grounds.
He changes his clothes in the locker room, changing out of the stuffy UA uniform and into black sweatpants and a tank top. No one else really uses the training grounds on Wednesdays. Most people go to the gym to do cardio or lift weights. Katsuki is looking for something a little more... explosive. Pun intended.
When he walks out of the locker room, he sees the last person he expected to see. Hitoshi fucking Shinsou. Practicing with that stupid capture scarf thing. Seriously, is he a younger version of Aizawa? There goes having a nice workout, alone.
When Shinsou sees Bakugou, he can't help but smirk under his voice changing mask. You see, Shinsou has made a bit of a game out of riling the other boy up as much as possible. In first year, that would've sent him to recovery girl immediately, but Katsuki has mellowed. At least as much as you could expect from the explosive teen. He's not exactly soft.
So, Shinsou makes his way over, and Katsuki can't help but internally groan and curse his luck.
"Hey Blasty." Shinsou drawls as he stalks closer, and is met with a glare.
"Call me that again and I'll kill you."
Katsuki hates that nickname more than anything on this planet. The self proclaimed 'Bakusquad' always calls him that, no matter how much he yells and threatens. Little pricks.
"Well someone's grumpy, what crawled up your ass today?" Shinsou crosses his arms over his chest and removes his mask so Katsuki can actually see his face.
Katsuki grits his teeth. But imagining blowing Shinsous face off makes it a little better.
"Shut the fuck up, eyebags." He growls, pushing past the stupid Aizawa wannabe so he can actually work out.
They both work out on opposite ends of the training grounds for a while, before Shinsou makes his way towards Bakugou again.
There's always been a... tension between them. The banter that borders on flirting, stolen glances and brief conversation as they're in the same friend group. Neither of them has admitted it, trying to deny it, even to themselves.
Shinsou interrupts Bakugous workout, and before he can start yelling, Shinsou interrupts him. "Wanna spar?"
That takes the blonde by surprise. Spar? Where did that come from? He wants to start shouting. Say 'hell no'. Spit in his face. Anything. But then Shinsou speaks again.
"Without quirks."
And Bakugou is intrigued. He really is. Because with quirks? He'd win any day of the week. But without? He's never really sparred with Shinsou before, and he's curious to see the skills that landed him in the hero course, a year late.
So he accepts, and they both get into fighting positions. Now, Katsuki knows that this, in his words, 'purple haired troll' has been training with Aizawa. But to what extent? And how good is he really?
Shinsou throws the first punch, which Bakugou easily dodges. But as the fight goes on, the blonde discovers that Shinsou is a damn good fighter. Is he better than him? Undecided. But they go back and forth for what feels like an eternity and simultaneously just a few seconds.
It's like a dance. Attacking, dodging, strategizing, trying to catch the other off guard. They're both sweaty and panting by the time Shinsou finds an opening, managing to tackle Bakugou to the floor.
He pins his wrists on either side of his head, using his legs to pin the blondes thighs down as he straddles him. And they stay like that for a moment, just staring at each other.
Shinsou can't help but admire how Katsuki looks, pinned to the floor, flushed and panting. But it doesn't last long as Katsuki throws him off and scrambles to his feet.
"Fuck you. You got lucky. Rematch!" He practically yells, still panting.
Shinsou stares up at him, caught off guard. What the hell? If he didn't know better, he'd say that he looks almost... upset?
"Woah man, chill out. It was just a spar. And you've been training for literal hours. You should-"
"Shut the fuck up and fight me." Katsuki interrupts in a loud voice.
Now Shinsou is really confused. Katsuki is the smartest guy in class, and sure, he trains strictly but even he has got to know that there's a limit. And that going past that limit does more harm than good.
"No." Shinsou shakes his head. "Seriously though, take a break."
And of course, Katsuki protests and is probably about to start yelling about Shinsou minding his own business or something, but Shinsou speaks first.
"Why won't you take a break? What's the big deal?" Shinsou stalks closer to him, forcing him to back up.
"Nothing!" Katsuki protests, backing up until his back is to the wall. "Get away from me you purple-"
"No. You're not doing that. Not now. Tell me why you won't take a break." Shinsou interjects, standing so close Katsuki can feel his breath on his face.
And somehow, he wants to tell him. Wants to tell Shinsou, of all people, about his deepest secrets. And in some ways, it makes sense. Shinsou has been criticized for having a 'villainous' quirk, just as Katsuki has. And they're kinda-sorta friends. Being in the same friend group. So he does something he never thought he would do.
"It's not enough." He grits his teeth. And damn, all that just to say so little? Why was that so damn difficult.
Shinsous face almost softens. He thinks he gets it. But at the same time, you never know.
"What's not enough?" He asks and takes a short step closer. There's practically no space between them now, yet neither of them comment on it or even seem to care.
"Everything!" And the words spill out before he can stop himself. "It's not enough. I'm still not the best."
Yeah. No one very said Katsuki was the best at expressing his feelings. But how is he supposed to tell a guy he thought he hated that he's done everything he can to be the best yet fucking Deku is still better than him? That he's so damn fucked up that he had to be chained up and muzzled? Even his own mother can see it, and she doesn't exactly keep it to herself.
Yet somehow, Shinsou gets it. In a way. He can read between the lines. He's always been good at reading people.
"I get it." He sighs. "But you're overworking yourself. You can't be the best if you end up killing yourself. You need to chill."
"I fucking can't. I need... I need to blow off some steam. I need to fight." Katsuki admits. And it's definitely more than Shinsou expected to get out of him.
"There are other ways to donthat." He says, his voice husky, and moves so close that Bakugou is pressed against the wall, his hands landing on the blondes waist.
"What?"
Shinsou moves one hand to cup his face and pulls him into a kiss. It starts off slow, but eventually Shinsou slides his tongue against Katsukis lips.
Katsuki can't help but part his lips and let his tongue into his mouth. He should push him away. Get mad. Anything. But the offer is so enticing that he lets it happen and even wraps his arms around Shinsou's neck.
Shinsous hands slide under his thighs and he lifts him up, Katsukis legs wrapping around his waist. Shinsou sucks on his neck as he carries him into the locker room, setting him down on a bench.
He walks over to his locker and gets lube and a condom, walking back over to Katsuki with it.
"You just keep that in your locker?" Katsuki raises an eyebrow.
"And that was obviously a good idea so shut up." Shinsou huffs and pushes Katsuki into a lying position. He hovers over him and pulls him into another kiss.
They undress each other clumsily, only breaking the kiss when necessary. Shinsou slicks up his fingers with lube as Katsuki wraps his legs around his waist again. Shinsou reaches down and presses one finger against Katsukis entrance. He earns a soft groan as he pushes his finger inside.
"Fuck.." Katsuki groans and Shinsou smirks.
"Sensitive."
"Die-" Katsuki gasps as Shinsou angles his finger and brushes his prostate.
Shinsou smirks and decides to focus on that spot, massaging Katsukis prostate and adding another finger, which makes him arch is back and groan.
He moves his fingers in a scissoring motion to stretch him out a little before massaging his prostate again. Katsuki flushes, and Shinsou can't help but find him adorable.
"Fuck... I'm... I'm gonna..." Katsuki gasps, and Hitoshi immediately pulls his fingers out of him, making him whimper at the loss of contact.
Shinsou unwraps the condom and rolls it onto his dick, lubing it up and aligning himself with Katsukis entrance. He leans down and captures his lips in a kiss as he pushes inside.
Groans and breathless sounds leave the kiss, with no real way of knowing where they originated. Hitoshi thrusts slowly at first, but starts speeding up as Katsuki adjusts to his size.
Shinsou pulls away from the kiss so he can look down at the blonde as he fucks him. He looks fucking ethereal. Blonde hair splayed out on the bench, a pretty flush on his cheeks, his eyes almost rolling back in pleasure as Hitoshi angles his hips to hit his prostate with every thrust, groans and whimpers leaving Katsukis lips. "So pretty..."
Bakugou feels heat pooling in his abdomen as his noises get louder and he knows he's getting close. Shinsou reaches down and takes his cock in his hand, starting to stroke him. And that's it for Katsuki as the pleasure explodes and he comes on Shinsous hand and his own stomach.
Shinsou grabs his hips and speeds up his thrusts, both milking Katsukis orgasm and chasing his own. He comes into the condom with a groan, his thrusts slowing until they stop completely. "Fuck..."
They both just pant for a couple seconds, trying to catch their breaths.
"That was..." Shinsou starts, but trails off.
He pulls out of Katsuki and removes the condom, tying it and throwing it into a nearby trashcan.
Katsuki sits up, registering what just happened. Did they just...? Yeah. They did.
"Tell anyone and I'll fucking kill you." He threatens, but it'd probably sound more intimidating if his voice wasn't hoarse from moaning.
"Sure, pretty boy." Shinsou smirks as he pulls on his clothes again. "Same time tomorrow?"
Katsuki scoffs and glares at him, before resigning.
"...yeah."