✎[NSFW]
✎ Aged Up AU
✎Quirkless AU

Requested by: hey-its-ak

It was almost a comical spectacle; two students who'd been diehard rivals since they were freshman--both battered and bruised from their most recent training session--stepping into the dormitory's elevator in stagnant silence.

This was their graduating year, yet their communication never seemed to go beyond training and team exercises for their internships.

It's not as if they'd intentionally avoided one another, but free time was already scarce with final exams and internships on their plate.

Izuku sighed, wiping his upper lip since he'd started sweating even more now that he was in an enclosed area.

There was a buzz from the ceiling light above, which didn't strike as unusual or alarming--that is, until it grew louder to the point of a high-pitched ringing.

"Kacchan? Do you hear that?"
Izuku inquired, just in case his mind had decided to play tricks on him due to the stress.

"Shut up, we're getting out soon."
Katsuki deadpanned, eyes fixated on the metallic doors.

'That's... Not what I asked...'
Izuku bore a look of concern, since Katsuki did have a habit of avoiding direct conversation in general-- but this time, instead of expressing disinterest, he seemed to be...

... Reassuring himself.

He then noted how Katsuki stood at the center of the mechanism-avoiding all contact with the walls by standing as far away as possible from each of them.

"... Kacch–"

A loud bang rattled throughout the elevator, startling the duo.
The cables began to stall, causing the entire vessel to stutter and shake.

The lights proceeded to flicker, followed by the final thrash--one strong enough to send the two pro athletes falling to their knees with sheer force alone.

An abrupt silence befell the air, one so sudden that Izuku could still feel his ears tingle due to the prior auditory overstimulation.

"...Are you... Okay?"
He huffed, finding it quite difficult to catch his breath.

Izuku's eyes searched for Katsuki's when he didn't get a response, in hopes of gaging his current state and mindset.

'...Oh God,'
He froze.

If his breathing was bad, then Katsuki was at his wit's end.

The blonde was at a slack-jawed pant, pupils dilated with utter terror.

Izuku's eyes grew wide with a chilling realization.

Was Katsuki possibly... Claustrophobic?

...

"Did you hear that?"

Ashido glanced up from her notebook, causing her company to go silent.

She and a handful of her classmates had been completing their homework together, when she thought she'd heard something odd.

"...Hear what?"
Denki finally asked, tilting his head.

The group listened intently for a few more moments, an ominous silence overtaking the atmosphere.

Most of their classmates were either with them in the commons or asleep, since it was going on late evening at this point.

As luck would have it, Izuku and Katsuki just happened to drag out their training slightly longer than usual that evening, without informing any of their peers.

Ashido fumbled,
"A-Ah, it's nothing. I'm probably hearing things, is all."

Everyone shrugged simultaneously, focus shifting attention back to their questions.

After all, who on earth would be exploring, much less entering the dormitories this late?

...

"Jeez,"
Izuku fumbled with the collar of his sweaty T-shirt,
"It's so hot."

He glanced at the vent panel with heavy lids, since his energy seemed to be slowly depleting.
The ventilation must've stopped working when the elevator crashed--fuckin' splendid.

That left them with limited oxygen, and if suffocation wasn't going to kill them, the simmering heat definitely was.

Izuku found his eyes beginning to wander, until his gaze rested on Katsuki.

Knowing him, he'd probably already come to the same conclusion with the vents, and was just playing tough since his earlier slip.

He was Katsuki Bakugo, after all--and it would be a cold day in hell before he ever seemed afraid of something as trivial as tight spaces.

Izuku bumped the back of his head gently against the metal wall, an exasperated sigh escaping his lips.

His demeanor was still visibly calm and relaxed--likely due to the lack of oxygen--but his mind was still competent.

So far, at least.

"The fuck are you doing?"
Katsuki hissed as Izuku tugged his shirt off, discarding the sweaty article of clothing to the corner of the elevator nearest to him.

He'd started slipping off his sweats, when Katsuki reiterated, this time grabbing Izuku by the forearm so as to stop him from progressing.
"Oi, I asked what the hell you think you're doing."

"...Taking off my pants?"

Katsuki sucked his teeth.
"I can see that, smartass. Why?"

"Because it's a freaking sauna in here, Kacchan! Minus the relaxation!"
Izuku pulled his hand away, undoing his shoelaces.

"And if you don't want to become boiled rice, I suggest you do the same."

Katsuki clicked his tongue.
"As if, asshole. I won't play into your crappy fetish."

"Whatever you say, Kacchan."
Izuku mumbled, slipping off his right sneaker.

The air was becoming tense...
He needed to take Katsuki's mind off of their predicament without making it obvious that he was helping him--or else he'd he'd shoot the conversation down before it carried on any further.

"Say Kacchan, Have you ever gone... Skydiving?"

Katsuki registered the inquiry, eyebrows furrowing with what was likely a combination of both annoyance and bewilderment.

"The fuck? No? The hell does it matter, shitty Deku?"

"Well, I once read an article which discussed the psychological misdirection of foiling one's senses by taking advantage of an unorthodox situation, and changing the perspective to make it seem more bearable."

"...What the fuck does that mean-"

"Ah, well, in simple terms, it's a type of self-inflicted placebo effect. You know, the phenomenon where a person's condition may improve after receiving false treatment."

"I know what the fucking placebo effect is, you dunce. The fuck does it have to do with anything?"

"Well... If someone were doing something like skydiving, and they suddenly felt afraid for some reason, they could shift to a different aspect of their environment to drown out the original fear."

Katsuki's eyes slit into annoyed glare, as a way of saying,
'You think I'm fucking stupid, shitty nerd?'

Izuku let out a light snort, before rocking onto his knees and approaching Katsuki's corner.

Katsuki's eyes widened.
"Wh--the hell do you think you're... "
He trailed off, lips pursing as he felt his body grow warmer.

"For instance,"
Izuku spoke calm and low, since Katsuki was within such a close proximity,
"If I were to do something like this..."

Scarred palms pressed against the metal wall that Katsuki was now sinking into, the placing of which was on either side of his head; ultimately encasing him within Izuku's self-constructed boundary.

"How would you feel?"

'Like I could kick your ass'
'Pissed off'
'Enraged'
'Get the hell off me!'
'The fuck is wrong with you?'

Izuku gulped--he'd be lying if he said he wasn't anticipating the absolute worst.

Getting yelled at was hardly the price to pay over Katsuki's sanity, one which was thinning by the minute without some sort of distraction. 

Izuku feared the worst when the blonde had yet to respond, concerned that he'd manage to stun him silent, or even a silent fit of borderline homicidal rage.

"Kacchan? What's wro--"

"Hic..."

Izuku's heart sank, a possibility he didn't even anticipate rearing itself and punching him in the throat.

Katsuki was... Crying.

The freckled teen immediately pulled back, eyes swiftly raking over Katsuki in search of any untended wounds.
"Hey, talk to me. Are you hurt?"

"Fuck you, asshole."
He wept, tears falling onto the metallic floors with a light patter.

"If you hate me then just fuckin' leave me alone, shitty Deku."

"... What? Where'd you get that idea--"

"You idiot! Don't you get it? You don't play with someone's fear like that unle!-"
Katsuki suddenly stopped himself as if he'd said too much, eye's flickering to the ground as he pursed his lips shut.

His face was flushed from a combination of the steaming heat, as well as the embarrassment caving in on the atmosphere.

Izuku's expression softened.
"...Kacchan, I--"

"Don't bother. I don't want your pi--"

Katsuki's breath caught harshly in the pit of his chest as Izuku wrapped his arms around him, his last word tumbling steadily to a mumble.

"Wh-What are you doing?"
Katsuki's forehead came to a feverish boil, one that he was willing to chalk up to the overwhelming heat--the stinging sensation in his chest, however, was a little harder to explain.

"I don't know--My body just... Moved on its own."

"... The hell kind of explanation--"

"Forgive me, Kacchan... I just... can't really think straight right now."

Katsuki shuddered, subconsciously reacting to the ticklish exhales of his company.
The heat and  adrenaline were bad enough, but the added affection was downright cruelty for his heart.

Izuku gently retracted in motion, just enough to look Katsuki directly in the eye,
"Please don't be afraid."

The surface of Katsuki's skin had begun to go numb with heat, only confirmed when he hadn't felt the brush of Izuku's lips against his forehead.
It didn't take long to register what Izuku was starting, but what Katsuki feared was just at what point he intended to stop--if he planned to do so at all.

Izuku drew back the blonde tufts that obstructed him, peppering one kiss after another as he trailed down the side of Katsuki's temple all the way to the base of his jaw.

Katsuki's breath hitched when Izuku slipped the strap of his loose-fitted tank top over his shoulder, creating an opening to further his advances without interruption.
The baggy material fell at his hips, leaving his entire chest and upper abdomen exposed.

With stuttering hands and a head full of cotton, Katsuki only knew that he didn't want Izuku to stop now.

Izuku's distant demeanor seemed to waver, a hint of surprise flickering behind his eyes as he felt Katsuki's hands pull them even closer, leading him by the neck as if demanding that he continue.

"Don't stop."
Katsuki exhaled under his breath, eyebrows furrowing with a self-inflicted anticipation.

The tantalizing intent was lost, now Izuku had no intention of dragging it out--with his own impatience getting the better of him.

Katsuki yelped when what he expected would be soft, aching kisses, shifted to the polar sensation of teeth grazing against his most sensitive spots.

"Ngh..."
Katsuki legs began to tremble, as he instinctively clasped his thighs together to save himself from any unnecessary embarrassment.

It was little late to be shameful, with Izuku already becoming familiarized with the intoxicating taste of Katsuki's skin on his tongue.

This wasn't the first time he was being intimate with someone, but it was definitely the first time it was with someone he'd liked for this long.

He suddenly groped Katsuku's chest, forcing a surprised cry from the latter.
"O-Oi, watch it--"

"Mm? Do you hate it?"
Izuku inquired, swiping his tongue over the rosy skin of Katsuki's nipple, using his free thumb to draw circles into the other.
"Should I stop?"

"...No..."

Izuku gave a slight beam, clearly finding some sort of amusement in Katsuki's flustered state.

"Good boy."

Katsuki's insides did a barrel roll, making him snap his eyes away in dire search of a distraction to keep his heart tame.
"Don't praise me like that--it's weird."

"Ah, but you're doing so well."
Izuku smiled mischievously, yanking Katsuki by the shin and causing the blonde to slide onto his back.

"See? Look at how ready you are for me."
he cupped Katsuki's length, which had long since soaked through the fabric of his shorts.

"You're absolutely drenched--does being scared turn you on this much? Or was this all me?"
It took a will of titanium for Izuku to restrain the urge to make a mess of Katsuki right then and there--but his wits were still somewhat about him.

Overdoing it would only make Katsuki even more scared, this was simply to give him some distracting stimulation.

Izuku pulled the hem of Katsuki's sweats to his knees, leaning in and taking Katsuki's length in one go.

"Fuck... Since when were you so good at giving head, Shitty Deku?"
Katsuki hissed through a series of pants and stifled moans.

Izuku's fingers pressed into Katsuki's hip hard enough to leave at least a light bruise.

Before long, Katsuki's hand was curling madly into basil locks, begging him not to stop.
Izuku held his hips off the floor, pulling Katsuki closer and closer as if he were his last meal.

With a sickly wet noise, Izuku stopped himself only a little bit before Katsuki would've reached his climax.

"Wha--What are you--"

"Shh, just keep your eyes on me."
Izuku mused, pulling his shorts off the rest of the way so that he could spread Katsuki's legs apart.

When the realization struck Katsuki, Izuku had already positioned himself between his thighs, holding either leg up by the shin.

"Are you an idiot? It's not gonna fi--"

"Don't worry--I have something else in mind."
Izuku said breathlessly, but excited nevertheless.

Katsuki twitched madly when Izuku reached between the two of them, pressing their lengths together, creating a slick friction between their bodies.

"Let's cum together, shall we?"
Izuku licked his upper lip, rocking his hips back and forth until he built up a steady pace.

Katsuki threw his head back from sheer pleasure, back arching as he moved on his own.

"You're so good at this, Kacchan."
Izuku was losing his precision, his own pleasure overriding his accuracy.

"Not... Half bad yourself..."
Was all Katsuki could manage, before sucking in a harsh breath as he felt his climax draw closer.

"Agh!.. Umph!.. don't... Don't stop... I'm close--please, more--"

"Ngh, hah... I'm at my limt..."
Izuku's jaw clenched as he released his grip on Katsuki, just as they simultaneously reached their climaxes.

Izuku didn't stop moving, riding out his high and overstimulating Katsuki as a result--not that the latter had any complaints.

The greenette panted heavily above Katsuki for what felt like ages, before taking his discarded shirt and proceeding to wipe up their mess. 
Katsuki had yet to say a word since his orgasm, which worried Izuku at first, since he feared that he'd either angered or mishandled Katsuki, which was quickly debunked by the light snore that came from agape lips.

He smiled fondly at the resting blonde, who was likely already exhausted by their physical training and simply passed out once he reached his limit.
Izuku wasted no time in redressing Katsuki, even taking the care to adjust his bangs where it'd been moved out of place.
It was a rarity to see Katsuki this peaceful--but Izuku couldn't help but wonder just how many people had witnessed him in such a vulnerable state. If only he didn't push himself so far past his limit all the time...

"You truly don't know when to give in, do you?"
Izuku sighed, flashing a modest smirk at his dozing company.
Katsuki stirred, rolling into Izuku's side and propping his head against Izuku's scarred forearm.
Izuku's face went warm, but not because of the lack of ventillation.

"Pfft--you're right. I've got no room to talk."

...

"I'm so sorry! If only I'd just up and checked--you two wouldn't have had to stay in there overnight!"
Ashido cried, gripping Izuku by the shoulders.

Izuku was among his classmates, both he and Katsuki sat in front of a coolant and given water to immediately compensate for their dehydration. 
"H-Hey, it's fine, we got out of it without any harm."
Izuku pat Ashido on the backside of her palm as he reassured her.

"Yeah, it was no big fuckin' deal. So quit pestering us already."
Katsuki muttered rather despondently, sipping from the half-empty bottle of water.

"Oh really? 'Cuz when we opened the elevator, you were fast asleep like a widdle baby. I bet you cried until you finally fell asleep."
Denku mocked, rolling his fists under his eyes and pushing out his bottom lip.

"Oi, don't be a jerk, they could've died!"
Kyoka smacked him over the head, prompting a yelp from the electric blonde.
"Making a joke of things is how I cope with traumatic events, Jiro!"
Denki snapped, rubbing at the back of his head.

"Regardless,"
Shota cut through the murmurs of the students,
"the dormitory elevators will need to be inspected to avoid any future technical mishaps, so it'd be the wisest to stick to the stairs for now. Dismissed."

"Curses!" Minoru stomped, as the students began to disperse.

Shoto motioned to the duo situated on the commons sofa.
"You two... Get some rest. Contact me or another staff member if you feel unwell."

Katsuki and Izuku understood, and were finally left alone--for the first time since being in the elevator.

Izuku's gaze found the floor, as he couldn't bring himself to look Katsuki in the eye.
"... So..."

"Save it."
The blonde snapped.

Izuku gulped, preparing himself mentally for the scolding of a lifetime.

"You've got some fucking nerve--making a mockery of my fear, only to backpedal and use me as your glorified cocksleeve--you're really fucked in the head, you know that?"

"... Okay, but--"

"Not one fucking word. Do you know how humiliating it's going to be for me to just be in the same room as you from now on? And what the fuck happened to your shirt? Actually, I don't want to know. You're probably gonna give me some half-assed excuse of lack of ventilation or some bullshit like that."

"... Didn't you... Like it though?..."
Izuku asked sheepishly, ready for the world to swallow him whole.

Katsuki's glass-shattering glare seemed to soften somewhat, as he spun his head around to avoid speaking to Izuku's face.
"... I didn't say... That I didn't like it... It was definitely humiliating as shit, though. Just fuckin' do better next time--and by that I mean no tight spaces, and do everyone a favor and bring some goddamn condoms, you spray more than a bottle of Axe."

Izuku spat out his water, but was hardly given any time to recover when he'd been abruptly grabbed by the collar,
"If you ever mention this to anyone--and I mean literally anyone--so help me god, I'm feeding your balls to a school of carnivorous fish. Understood?"

"Y-Yeah. Loud and clear--"

"Good."
Katsuki concluded, folding his arms as he stood patiently on the spot.

Izuku's eyes shifted awkwardly around the room, as he waited for him to at least say something.
 
Katsuki raised an eybrow.
"Well? I'm waiting."

"...For--"

"For fuck's--Do I really have to spell everything out for a shitty nerd like you?"
He rolled his eyes, pressing a kiss to the base of Izuku's jaw with a relenting sigh.

The greenette flushed, placing a palm over the area that made contact with Katsuki's lips.
"What was--"

"Hah? You like me, don't you?"
Katsuki said matter-of-factly, his own complexion beginning to redden as the gesture registered.

Viridescent eyes widened with an awe-stricken glow, as Izuku's hand remained cupped over his cheek when his look of surprise became an expression of pride and admiration.

"Sharp as ever, Kacchan."