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What the fuck.
"What the fuck?"
No, seriously, what the fuck happened?
Katsuki does another turn in the locker room mirror and wonders why he didn't notice that his loose workout shorts had turned into these...skin tight and entirely too small ones. The material felt familiar, smooth finish like velvet, but the squeeze of the hem just below his asscheeks is way too foreign.
Did he fuck up his laundry that bad?
Immediately he turns from the reputation-ruining image in the mirror to rummage through his bag.
'This has got to be one of that human spark plug's stupid jokes', he thinks.
It's not the first time he's fucked with people's clothes, the stunt with the cheerleading uniforms was a little too well thought out and equipped to be child's play. It's usually the girls Kaminari messes around with, but experience proves he has absolutely no problem worming his way underneath Katsuki's skin as well.
His hand feels the fabric he was looking for and with a swift tug and shake, he's only a bit relieved. (It's like a microscopically small amount of relief.) His tank top was spared the Denki Effect.
Doesn't change the fact that he's taking dick print to a whole new level.
Red eyes twitch and Katsuki can feel the heat of annoyance bubbling thickly through his veins.
"Kacchan?"
Katsuki startles at Deku's voice. The bastard's face would probably twist in concern (a look Katsuki dares to call cute), and put off their sparring practice for the sake of saving Katsuki's pride. But hell would freeze over before Katsuki ever high tails it out of a fight, especially with Deku.
They may be dating, but fuck going easy.
"Give me a damn minute, Deku! I'll be out!"
-
"Is young Bakugou alright? I hope we aren't bothering him with this."
All Might sat small on the bench, eyeing the locker room doors with worry. Just the creased brow on his thin face had Izuku feeling bad.
Coming from the locker rooms, Izuku gives his mentor a reassuring smile.
"Don't worry, All Might. Kacchan would never do anything he doesn't want to. He's probably changing into something more comfortable."
When Izuku had mentioned All Might would be there, he only had to grovel and beg about ten percent less to get Kacchan to help practice with Izuku's additional quirk.
'Fine', he had said, smug grin in place. 'No need to get on your knees just for my time.'
Izuku was grateful, truly, but found it a tad bit ironic that the blonde spent the better half of their night on his own knees.
And was that a sight Izuku never even dreamed he'd get to behold. Bakugou Katsuki, his childhood best friend, accepting his adrenaline-fueled confession and now using Izuku as a blowjob test dummy. A job Izuku would kill to keep.
Getting the chance to see flushed cheeks under dazed, big eyes staring up at him was an experience he refuses to forget. It was so damn adorable. It made the sight of Kacchan's plush, spit slick lips wrapped around Izuku that much more sinful.
And boy were those lips absolutely sin-
Wait, wait, wait...
Okay, Izuku thinks. Enough of that line of daydreaming. Any further and he'd later regret not taking things seriously. The last thing he would want is to pop a boner in front of his mentor and lifetime idol who is waiting to teach him how to conquer hero society's biggest villain.
But, damn it, even that thought itself is losing against the strong opponent that is the passionate fumbling nights he spends with his boy...friend.
Wow.
Izuku wants to giggle like the schoolboy he is every time he thinks about the word.
Boyfriend...nice.
But, all uncontrollable happiness aside!
He has to get his head in the game. For society's sake, All Might's sake, and Kacchan's sake.
If he wants to keep everyone and his partner safe, his easily triggered adolescent arousal has to be kept in check! Focus is Izuku and Izuku is focused. Kacchan will kill him if he doesn't give him his all. So he won't disappoint!
"Alright, Deku! You better learn quick and fast or I'll beat it into you until you do!", Kacchan's voice rings loud across the gym from behind Izuku.
Speak of the angel and he shall appear.
"Whatever you say, Ka...ka...uhhm"
Izuku goes slack-jawed at the scene that plays right before his eyes.
Katsuki Bakugou strutting out of the gym locker room in what could only be described as heart-stoppingly, blood racingly, extremely small...compression shorts (Izuku begs his brain to not label Kacchan's pants "booty shorts"). One's so...compressed...you can see mouth-watering details in the front. Almost as if he has forgone underw-
"Young Midoriya! Are you alright?", All Might shakes a bit as he rushes to stand to check on Izuku's suddenly hunched-over form.
"I'm- I'm fine, All Might.", he wheezes, tugging his shirt down. "Don't worry about me. I beg of you."
"Let the old man fuss over you, nerd. God knows you need someone to when I'm not around." Kacchan stops right in front of Izuku, with wide green eyes at crotch level.
It, shamefully, takes 99% of OFA to hold himself back from pushing face first into the cute bulge stretching the short's fabric. The other 1% is keeping him standing.
He must've been staring creepily for too long because his nose stings as it's pinched to look up (past Kacchan's plump chest) and into Kacchan's disgruntled face.
"My eyes are up here, numbnuts."
('Heh. Numbnuts. At this point, they're about to be.')
Kacchan rolls his eyes at Izuku's stunned silence and turns to presumably go stretch.
And thank all things holy for making him win every fight he's ever fought just so he can be alive at this moment and witness this.
Because that ass is worth living for.
The uncontrollable twitching in Izuku's pants instantly brings him back to the moment and has him realizing the huge problem at hand.
Izuku turns abruptly to the one person who should never find out that Izuku has tendencies of the sexual variety.
"All Might maybe your view would be safer from over there, like a bit further from the action.", he whispers. All Might looks puzzled but Izuku rather he be confused than be anywhere near the splash zone.
...Bad wording but that's beside the point.
"Or how about finishing that book you brought? Yeah? Or maybe we should just call it a day. I'm suddenly feeling-"
"You're not trying to run, are you, Deku?"
"Kacchan!", Izuku turns back to his boyfriend, looking high up past his blonde hair, because wow, Kacchan is very flexible. "Run? Psh! I would never! I don't even- like what is- I'm just super excited to train with Kacchan!"
Kacchan gives Izuku a once over from where he sits, or splits in this case, on the floor before turning away, ears slightly pinkened.
"Whatever. You better give me all you got."
'Oh Kacchan, there's plenty for you if you give me the chance' Izuku muses to himself as he uses the excuse for water to go tuck his junior in his waistband.
-
One of the many things Katsuki knows for sure about Deku is his defensive fighting style. It's borderline evasive. Meaning Izuku will do all he can not to fully injure anyone when sparring. Only doing what he can to protect others by protecting himself.
Yeah, that's all cute and all but Katsuki is three seconds from blowing a hole in the roof from how annoying it's getting.
Ever since the first lunge, Deku has slipped from Katsuki's grasp each. and. every. time.
"Who the fuck is winning here, Deku?", Katsuki pants out right after failing to land a kick to Deku's side. He was efficiently blocked by Deku's black whip curling around his ankle. It shouldn't have been as hot as it was, so Katsuki aimed a rapid-fire towards his chest, knowing Deku will jump back to dodge. That way he won't see the red spreading across Katsuki's cheeks.
"No winning, Kacchan. Just your average, run-of-the-mill spar.", The smile on Deku's face is so fake it's personally offending Katsuki.
Fine.
Katsuki was getting pissed anyway.
With a shrug, Katsuki turns to walk away.
"If you're not gonna take this seriously, then I'm fucking off back to the dorms."
"Wha- No wait! Kacchan! I'm sorry, I'll be serious!"
Katsuki's nearly halfway across the gym from where Deku insisted they spar when he feels a vein pulse in his forehead.
The blonde only lifts one finger that conveys everything he wants to say. He doesn't have time to be prancing around in this thong to make Deku fucking work towards his goal. It's embarrassing enough that he's refusing to acknowledge the fact he's wearing underwear for pants, but add on the fact that he's actually admiring the maneuverability of skin-tight shorts and you got a double whammy of humiliation.
He gets to the bench where All Might has gotten up, fretting that another emotional fight might break out. And only when he bends to snatch up his towel on the bench does he feel a pressure wrap around his waist.
There's a millisecond to understand its black whip before he's on a speedy course right back to Deku.
A blast to the ground has him flying up right before their bodies connect. Katsuki lands in a crouch and immediately finds himself ducking to avoid the dark tendril aiming for his neck.
And God it's a rush.
Katsuki is thinking, finally, the nerd got his head in the game. Like really going all in. It gets to a point where Katsuki can't even get airborne without black whip encircling his thighs, hips, anything it can latch on to, keeping Katsuki earthbound.
Sweat drips into Katsuki's eye when he finally finds a chance to take a breath far from Deku and his little tentacles.
"Getting a kick out of feeling me up with those damn things?", Katsuki calls out.
Deku gets this weird look on his face that kind of makes Katsuki want to suck him off again.
"You have no idea."
A tense quiet encases them. Their chest rising in falling in sync, eyes never leaving the other. Katsuki's muscles are stretched taut, a hair-trigger ready to fire.
Katsuki makes the first move, and nostalgically, Deku follows.
The plan was to get close and take Deku down. So, within milliseconds Katsuki is up close in Deku's face before dropping into a sweeping kick. There's a dull thud as Deku's back hits the ground, disorienting him, and Katsuki takes that stunned moment to sit on Deku's stomach. Easy victory.
Well, it would've been if he wasn't rolling over before his ass could make contact with the muscled stomach.
Deku had regained his bearings quicker than what should be normal and flips them over, hovering between Katsuki's legs.
That has Katsuki burning in the face before he shoves a hand in Deku's smug one, to push him off.
It quickly turns into an entirely too sexy wrestling match. Limbs flying, hands grabbing, hips pushing until Katsuki is pressed hard into the floor, huffing harshly into the cool ground. His hands held above his head in Deku's ridiculously strong grip.
The nerd is breathing hard into Katsuki's neck. Nosing behind his ear and tracing his hairline, making shivers run up Katsuki's spine.
Deku only stops to hum, "I guess I win. Right, Kacchan?"
Katsuki could laugh at the complete turn around in Deku. Tiptoeing around the open space in the beginning, but now he's gloating with Katsuki face down on the floor.
And there's no excuse for Katsuki's loss today.
A sigh breezes across the ground with his internal acceptance of defeat, "Yeah, right. Not with how you started off. Next time don't half-ass it or I'm never helping again. Got it?"
"Anything you want, Kacchan.", Deku mumbles, still being weird behind Katsuki and nuzzling his neck. Katsuki would punch Deku for getting handsy in public if it didn't feel (kind of!) good.
But because the ground is starting to feel too hard to lay on without underwear underneath, Katsuki goes to get up.
And.
That's when he feels it.
Hot, thick, and threatening to rip through the high-quality fabrics of Katsuki's shorts.
They both freeze, reminiscent of their stand-off earlier, except this time Katsuki will NOT make the first move. He's already pushed too far back that Deku's practically fucking him.
Suddenly, where they are and who's sharing the same space as them, comes flooding back into their reality.
"Kacchan."
Deku sounds serious, but Katsuki can not take him so. Especially not with his rock hard erection pressed against Katsuki's ass.
"Deku."
"Kacchan. It's not...It's not weird."
"It is."
"It's not."
"I promise you, it is."
The whole scenario is unbelievable, but the fact Deku was able to maintain his current state with their aging idol withering away in the corner is interesting at most. (No offense to All Might but he's not exactly boner "inspiring" as of late).
Though there is something about this position, the endorphins pumping through his veins, and the squeeze of the entirely too small shorts that has Katsuki maybe pressing back to feel more of Deku.
"O-okay. Okay.", Deku grips Katsuki's wrist tighter before clearing his throat, like he's preparing to state some kind of proposal. "Kacchan, you were very cool today. Or rather all the time. A-And, I love that about you! So, please, just know this...state of mine was fueled by that part of you as well."
Deku shifts lower so they're pressed front to back from their thighs to their blistering hot faces. "But-"
This should be good.
"-you just look so hot in those shorts."
"Oh my god.", Katsuki rolls his eyes, cheeks burning in embarrassment and, yes, flattery.
There's a brush of lips across Katsuki cheek and his thread-thin resolve instantly snaps.
"My room. Now."
It says a lot about how long Deku was sporting that weapon from how fast Katsuki is over Deku's shoulder. Only getting a chance to make a sound of surprise when he feels teeth dig into the side of his asscheek.
"Deku! Put me-!"
But Deku only grabs Katsuki's ass, squeezing. Shutting the blonde up from how good Deku's rough hands feel sneaking up his shorts. Katsuki bet those fingers would feel amazing inside him.
"All Might! Kacchan has a stomachache so I'm taking him home! See you tomorrow!", is all the nerd says as an explanation.
Then the air crackles with electricity before Katsuki could get a word in, OFA already rushing through Deku's veins.
-
And they're gone.
Leaving only the slam of the door to echo off the gym walls.
Leaving all to go quiet.
All Might sighs to himself before gathering his things to head back.
"Young Midoriya, I know I said to train your body.", a lone tear nearly sheds from those sunken eyes. "but THAT training might cost us our Young Bakugou for a few days."