Chapter Text
Chapter 01:
"Fuck." Is all Bakugo Katsuki can think as he bolts out of the training room.
Fuck, fuck, fuck.
He ignores the muffled voice from behind him, calling his name. Blood rushes in his ears, face hot with embarrassment and something else he tries to ignore, as he makes his way through the corridor that he can barely see, his entire body instead focused on his current predicament and the inexplicable need to escape.
The air shifts as he shoves a door open, the smell of the damp shower room permeating his nostrils. He sighs deeply, making his way over to the benches whilst wrestling to get his clothes off. Trainers, socks, black tank top and his black joggers get thrown next to his locker before he hastily grabs his wash bag and towel, leaving what remains of his sanity with his discarded wardrobe.
"Damn stupid nerd… always messing things up," he grumbles under his breath as he enters the shower, closing the curtain behind him, and stepping out of his boxers. He fiddles with the temperature, deciding on scorching hot to disintegrate his stupid mistakes, before risking a glance down at his dick. His lips purse for 2 reasons.
Number 1, he can’t remember a time when he was this turned on. And worse still, number 2, is that it’s all Deku’s fault. Riling him up like that…
At the mere mention of the nerd, his dick twitches, a bead of precum building at the tip of his swollen mushroom head. ‘Damn traitor’, he thinks to himself, glaring daggers at the appendage as he replays the events of the past day or so.
Yesterday - Mina’s Party:
A sadist. That’s what Izuku had confessed to the class of 1-A during a game of truth or drink yesterday at Mina’s party.
Deku’s cheeks were red, the effects of embarrassment and the now discarded beer cans he had accumulated during the night. Bakugo’s own cheeks were hot after hearing the word, helpless to do anything but stare at Izuku dumbfounded, his perspective of the greenette warping in-front of his very eyes.
A sadist?
Deku?.. the unassuming nerd?
His childhood best friend?
The boy who is striving to be a pro hero?
He likes to.. hurt people? The mere thought is almost laughable…
But as the night goes on, the word
keeps repeating in his mind, becoming intertwined.
Sadist. Deku. Sadist Deku. Sadist Izuku.
Shaking his head, he grabs the bottle he’s been nursing by the neck and takes a large swig in an attempt to switch his focus from the boy who is currently glowing under the orange strobe lights, laughing with Pink Cheeks.
His alcohol-oriented diversion may have worked, had it not been for the focus of his problems, the very bane of his existence, suddenly stumbling up to him with a drunken grin, leaning a little too close for comfort, and slurring an invitation that Bakugo is powerless to say no to.
"Heyy Kacchann, let’s spar tomorrow.. hic.. after class, yeahh?"
Present Day - Sparring After Class:
In…out. In….out. Trying to control his rapid heartbeat, Bakugo stretches his arms, cracks his knuckles, and assumes his sparring stance, lifting his gaze to meet Izuku’s, who is standing about 4 feet away, mirroring his stance. His heart skips a beat at the visual, and he scowls.
Izuku nods, the corner of his mouth ticking up in a smirk, before lunging, throwing his right fist out, yet making no connection as Bakugo dodges, returning a punch of his own. They trade punches and the occasional kick for a while, evidently evenly matched when it comes to quick-thinking and sparring skill. It’s only when Izuku finally lands a blow on Bakugo, on his face, splitting his lip open, that the blonde falters.
His lip tingles as blood trickles from it, which he quickly wipes away, hoping to wipe away the wave of lust that just hit him unexpectedly. He shakes his head, trying to get back in the right mindset, but Izuku’s already there, grabbing his arm and sweeping his legs out from underneath him, causing a winded sound to escape Bakugo’s oesophagus.
"Fuck," Bakugo wheezes, the body ontop of his back putting pressure on his lungs and making his breaths harder and heavier. He tries squirming and elbowing blindly behind him, but Deku isn’t having it. He grabs both flailing arms and twists them, restraining Bakugo like a police officer would, whilst still applying pressure to his arms in hopes he will tap out. Bakugo huffs out a breath.
"Tap out Kacchan," Deku says, amusement lining his tone as his breath tickles Bakugo’s neck, forcing the blonde to repress a shiver, the lack of oxygen as Deku moulds his front to Bakugo’s back making him light headed.
"Get the fuck off of me Deku," he spits with less venom than anticipated, flustered and warm as his arms throb with a delicious ache, his lungs burning as if he were being choked. His breath hitches at the thought.
Instead of complying, Deku tightens his grip on Bakugo’s arms almost painfully, and an unexpected whimper bursts from the man on the ground.
Izuku’s eyes go wide, and he loosens his grip, which Bakugo quickly takes advantage of, shoving Deku onto the floor and scrambling to leave the room, before the other can even apologise for hurting him. The slamming of the gym door echoes in Izuku’s ears as he tries and fails to catch up to a red-faced, panting Bakugo. Despite the worry niggling at Izuku’s brain, he hangs back, deciding to give Kacchan some space whilst he cleans up the equipment they had used earlier.
Present Day - Shower Room:
Steam clogs the shower stall as Bakugo starts cleaning himself, snapping himself back to the present, lathering soap across his body. His hand brushes his dick and he hisses, sparks of lust shooting up his body like fireworks. Fuck it, he thinks, grabbing himself and tugging from base to tip. The pleasure and relief is instant, causing his knees to buckle slightly. He throws his other arm out, bracing himself against the wall as the shower pelts on his downturned head. Jerking himself again, he bites his lip to muffle the strangled sound attempting to escape his throat.
"Mmf- fuck."
It’s been too long since he jerked off. He doesn’t make a habit of it, unlike some of the other disgusting extra’s in his class, especially considering he is only able to do it in the shower due to his quirk. This one has been a long time coming though.
His eyes close involuntarily, and images start forming in his mind. Deku pinning him to the mat, gripping his spiky blonde hair almost painfully, teasing his neck with rough bites and kisses, whispering teasing, dirty words, choking him with one hand, tugging his joggers down with the other and spank-
The sound of the door opening and footsteps entering the shower room pulls him out of his thoughts, bringing a flush to his face.
"Kacchan? Are you still in here?"
Fuck. Fucking fuck.
Clearing his throat, "I’m showering Deku, leave me alone," he snaps, though it’s more pleading than anything, considering his hand has not and will not stop its ministrations on his cock. Not now, when he’s so close..
Footsteps draw nearer, near enough that Katsuki can see a shadow getting closer under the shower curtain. His breath hitches, frozen as scenarios flit through his mind. Deku could easily catch him in the act, hard as a rock, jerking off after being pinned by the nerd himself. Realistically, this should snap him out of.. whatever this is, however, the idea only serves to turn him on more. His free hand snakes up his chest, fiddling with his left nipple piercing, making his cock throb in his other hand. He bites his lip hard.
"I’m really sorry if I hurt you Kacchan, I didn’t mean to, I figured you would tap out if I was actually hurting you. I didn’t mean to hurt Kacchan, I really didn’t, I promise. I’m such an idiot, please don’t hate me….."
Bakugo swipes his fingers over his tip, gathering his precum before pumping himself at a steady pace, Deku’s rambling, soft, apologetic voice spurring his actions. His eyes roll back as he leans against the shower wall, his pace growing sloppier as he gets closer and closer to cumming.
"Kacchan….spar……sorry….Kacchan?"
Kacchan Kacchan Kacchan Kacchan.
That stupid nickname repeats like a broken record in his head, and it’s more than enough to tip him over the edge. He turns his head quickly, biting his shoulder hard to muffle his groan as he cums, using the hand that was twisting his nipple to catch his release.
He hears footsteps receding and sighs in relief, hoping to god that the shower noise prevented Izuku from hearing anything.
He quickly washes the cum off of his hands, watching it drip down the drain along with the rest of his pride, before washing himself again. Mentally berating himself for being so careless, he wraps his towel around his waist and turns off the shower, hoping Deku is still around so he can give some shitty excuse before booking it back to his dorm.
Thankfully, he finds Deku sat on the bench beside the lockers, nervously tapping his fingers against his knee.
"It’s fine Deku, you didn’t hurt me, it was my fault for not tapping out, so stop worrying," Bakugo mumbles, avoiding Izuku’s gaze and trying to prevent the heat at his neck from spreading to his cheeks.
He can feel Izuku’s eyes on him, trailing over his body making it hard to focus on getting dressed.
"Okay Kacchan, whatever you say." His voice sounds off, but Katsuki pays him no mind as he tugs his shirt over his head, his back to Izuku as he dresses. He hears retreating footsteps, then the door, and sighs, shoulders dropping and a hand running down his face as he blows out his breath. All he can think is that he’s so fucked.
…….
Unbeknownst to him, Izuku is grinning, almost maniacally, as he walks down the corridor, his dick twitching, half hard at both the sight of Kacchan coming out of the shower, as well as what he knows Kacchan was doing in that shower, thanks to the red bite mark he couldn’t stop staring at.