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It's laundry day.
They don't have a specified date for everyone, technically, but Katsuki has to wash his. They smell of sweat and dirt and nitroglycerin and the horrid combination is beginning to stink up his room.
Katsuki is a clean freak. Always has been, always will be. He can thank his parents for making him as such, especially after they caught him in the middle of an… embarrassing act when he was 13.
Give him a break; he was presenting and his hormones were fucking everywhere. Mitsuki had to wash his sheets, and once dealing with the trauma of cleaning things she didn't want to, she began teaching Katsuki how the washer works, amongst other things because, in her words, it was disgusting to see, let alone smell.
So he takes the elevator down to ground level and kicks open the door where the washer and dryer sit. A load is currently active in the dryer, but nothing is thankfully in the washer, ready and available for use.
He sets the basket on the counter and begins taking items out and tossing them in. Three tank tops, a black skull tee he's bad for two years, one pair of shorts, his favorite pair of sweats he almost tarnished three days ago after a kerfuffle with his quirk–
But when he yanks a different item out of the basket, he freezes.
He has to stretch them out between both hands. They're a bit bigger than his, colored a dark red and the hem slightly ripped after going through god knows what.
Katsuki almost drops them in shock to cover his nose at the stink radiating off them the moment he opens them fully. They definitely didn't smell like him, but he could recognize that strong scent anywhere.
These are Eijirou's boxers.
How in the fuck did they end up in my dirty laundry? Katsuki is very very careful on who he allows in his space, mostly for the fact he prefers having his own alphan scent in his den and anyone else's would tip him off.
This isn't just some random stranger's though. It belongs to Kirishima Eijirou, his best friend/next door neighbor who happens to be the class' only Alpha Prime.
Hell, it could've been an accident. They sparred a lot together and undressed in the same locker room. Eijirou may have dropped it in Katsuki's pile and the blond simply didn't notice as he threw them in his bag to clean later.
The question is, how did he not smell it? Sure it was under several layers of his own clothing but Eijirou's scent is potent and overwhelming if you get around him.
Katsuki doesn't have to breathe through his nose to know the redhead is going to have a rut any day now. He could taste the cinnamon his scent is enriched with and it’s nowhere near his face.
Katsuki can't deny how the spice makes his stomach twist delightfully, or how his body shudders in pleasure just at the thought of the Alpha's sharp teeth near his skin.
They had a few close calls during training, where things got too heavy and intense and Katsuki wanted to grab Eijirou and… well.
He doesn't even realize he puts the boxers against his nose until he's snuffling it like a bloodhound thirsty for prey. With a grip on the washer, he silently thrusts into nothing, imagining Eijirou taking him, or better yet, him taking Eijirou.
The washer beeps, reminding him that it's still open and needs to be started but Katsuki is too far gone. The scent is heady, stings on his tongue when he lets it loll out to lick a stripe on the dried spot Eijirou's precum left behind.
His eyes roll, moaning softly in the fabric. He imagines Eijirou coming behind him, stuffing his used jockstrap in his mouth while he fucks him roughly. It transitions to Eijirou on his hands and knees, Katsuki snapping his hips as the Alpha Prime meets every harsh thrust.
He's so into his own fantasies that he doesn't hear someone enter the room and pause, watching his motions unfold. His hips stutter, growing close just at the mere thought of Eijirou towering him, growling in his ear to cum, to cover his pants in sticky white seed–
"...Bakugou?”
Katsuki gasps, finally coming out of his headspace to fling the garment in the washer in panic. His face is beet red, sweat forming across the nape of his neck seeing who greets him.
Vermillion eyes flick from Katsuki to the washer to Katsuki again. They look confused, yet Katsuki catches a glint of excitement mixed within. "Were you just... sniffing my underwear?”
For the first time, Katsuki can't retort or snap back in a timely manner. Being caught was dreadful but being caught by the man who owns the underwear he had just been salivating over was practically signing his own death warrant.
Eijirou's question has to be rhetorical because it's obvious whose it is. Who the fuck else would wear underwear with Crimson Riot on it?
Maybe he's teasing. Maybe he's trying to get under Katsuki's skin. Whatever it is, it's too late to lie now. He crosses his arms, looking Eijirou straight in the eye. "Yeah I was. What about it?”
Presenting it as a challenge instead takes the embarrassment off his back. He wants to see how Eijirou reacts. Depending on it, they can brush it off like nothing happened...
...or they can snip that thin invisible string Katsuki has been desperate to cut since day one.
Neither move for a solid minute. The air grows thick and heavy the longer Eijirou and Katsuki stare at each other. Katsuki ponders tossing his laundry in and taking Eijirou's hand so they can move to his dorm, but that would simply take too long and Eijirou's scent is growing and Katsuki sees the redhead's pupils dilate as he pumps out some of his own–
Fuck it. If people walk in, it's their issue.
The basket falls on the floor. Clothes scatter everywhere in Katsuki's rush to get to Eijirou. They collide in a frenzy, lips smashing together painfully. Katsuki moans, the scent hitting his nose full force, much thicker being so close to his best friend.
Sharp fangs scrape Katsuki's bottom lip, his back hitting the wall while Eijirou's hands slam on both sides of his head, caging him in. Katsuki runs his hands anywhere he can touch, briefly touching the scent patches on Eijirou's neck that are completely soaked through, practically useless now.
Eijirou reels back only slightly. Drool runs down his chin. “You’re fucking dirty, Katsuki.” The growl makes Katsuki tremble, “Smelling my boxers like you can't help yourself.”
Katsuki whines. He couldn't. Eijirou just has that effect on him. Even the strongest Alphas wouldn't be able to resist an Alpha Prime's scent… or so Katsuki thinks.
Eijirou takes his hands off the wall, gripping Katsuki's hair in one and a thin hip in the other. He tugs Katsuki's head to the side and surges down to nudge his nose against the blond’s patches, which are similarly ruined.
“God, I want to fuck you so bad.” He confesses, licking at the adhesive keeping his scent mostly blocked away. “If we weren't downstairs, I'd take you right here.”
Katsuki arches. Why can't he? There's no one else here! “D-Do it.” He grunts, “Put your fucking knot in me. I ain't waiting anymore.”
A snarl, “Don't test me, Alpha.”
Katsuki shivers in delight. “I want to.”
“You aren't prepped. I'm not gonna force it in.”
Katsuki groans, hole clenching, aching for something to fill it. He's only ever had this craving three times and this one is the fourth. He knows Eijirou is right; they'll have to haul tail to get lube before they go any further penetration-wise.
But… that doesn't mean Katsuki can't have a little fun here. Eijirou's rut will happen at some point. Why not tease him a bit to rile him up?
He wants to see the knot form if it hasn't already. Katsuki wants to watch Eijirou grow hard and cum for him. He wants to take that powerful smell from the source and coat his tongue in it. Is that too much to ask?
Obviously not, if Eijirou allowing Katsuki to shove his pants to his ankles is any consolation.
“Kats, we shouldn't.” Eijirou whisper-yells, not making any attempt to cease Katsuki's motions. He places a shaky hand in blond locks, gripping them just enough to reel him in to place his nose where his cock is hidden behind his boxers. “We really, really shouldn't.”
Katsuki grips Eijirou through the fabric, running his hand up and down, garnering a groan out of him. “I don't give a shit.”
Eijirou gasps and thunks the back of his head into the wall, eyes rolling as Katsuki pulls his length out of hiding and immediately licks the tip.
He's never done this, and the inexperience shows in the curious flicks of his tongue and suckling of his lips along the shaft. But it doesn't seem like much of an issue. Eijirou's sounds of pleasure encourage him to continue, motivate him to raise up and cover the head with his mouth.
The hand not holding Eijirou in place begins to jerk him off hastily, meeting Katsuki's lips as he falls further and further until he's gagging and having to pull away. Eijirou hushes him, runs his finger over pink-tinted lips and moves him down again, albeit a bit hastily and rough for Katsuki's first time.
His Alpha is taking over. Katsuki revels in that, knowing his behavior is the reason for it. Moaning with a mouthful of two inches while the rest gets fondled by Katsuki's sweaty palm makes Eijirou tighten the hold he has on the blond's hair.
With a pop, Katsuki removes his mouth and looks up through hooded eyes at the Alpha, keeping a steady rhythm so Eijirou doesn't go without enjoyment. Under his fingers, Katsuki feels the beginnings of a knot pulsing and growing. Once that pops, Eijirou will cum and god, will it be wonderful.
Katsuki won't let it occur just yet, though. He's always wanted to rile up his best friend to the point of no return and tonight seems like the perfect night to do so. It's probably not the best choice considering this is their first sexual encounter but Katsuki could care less.
Maybe he's going in rut too. That could be why he's so anxious and needy and horny. Or Eijirou simply has that effect on him.
Could be both. It isn't necessary to worry about.
Eijirou glances down and makes eye contact. His pupils are blown out, mouth parted and drool falling off his bottom lip. Every breath starts to get faster, chest heaving. Katsuki smirks, fist hitting the now baseball-sized knot every time his hand moves toward the base. The noises escalate. The unconscious hip thrusts get heavier.
Katsuki waits for the right moment, just as Eijirou arches into the wall, and then stops.
It's unexpected. Eijirou doesn't whine or beg. He doesn't cry. He doesn't keen and take over for himself. No, no.
He bares his teeth and growls at Katsuki.
Katsuki watches his eyes twist in slits, claiming fangs extending out of his gums and the tips of his ears elongating.
His eyes widen. Oh shit. The Alpha Prime was furious.
The whole class had been warned of teasing Eijirou too much. After presenting, Eijirou's behaviors had changed slightly and he was much more irritable than he was in second year. Not to say he became unlikeable but people definitely watched what they said around him now as his Alpha took control more often than not, mainly when it came to his pack.
Katsuki probably should've watched what he did, too.
Katsuki draws in air seconds before Eijirou hauls him off his feet and throws him over his shoulder. If he were of a sober mind and not getting dizzy by Eijirou's pheromones, he might've fought to have the redhead release him.
But he does have a brain cell left to notice right as they leave the room that a pair of pants and underwear sit in a pile on the floor. Which means Eijirou is completely hanging dong and anyone could catch them.
Katsuki goes to snap and remind him of his half nudity but Eijirou pumps out more of his addicting, intoxicating scent and the blond slumps. He totally fucked up edging Eijirou and now he's going to pay for it.
It shouldn't turn him on but it does.
Cameras litter the hallways to monitor everyone after the war. They were brought in as a preventive measure in case any student(s) needed assistance. Plus, it brought solace to the parents/guardians of class 3-A. It's been two years since their installation.
Seeing as everyone's presented, Katsuki thinks they may want to take them down. Hormones and all that jazz kinda make people stupid, notably Alpha's. Katsuki knows; he's one himself and he has horrible rut-brain when he has his. This situation is very similar, with the addition that Eijirou is half-naked, erect, and in public , holding a partially scent-drunk Katsuki over his shoulder like he's a sack of meat.
Katsuki will have to hurriedly call Aizawa or whoever is monitoring the dorms telling them to take the night off or delete the footage before it's seen, unless they want to get shocked from seeing things they never wanted to see.
His phone is on his bed, right? He thinks he left it there when taking his laundry downstairs. If Eijirou takes a moment to set him down, Katsuki could quickly rush to his den and grab his cell to swipe Aizawa’s number that's on speed dial.
But Eijirou doesn't even give him that much. Instead, Eijirou's door remains ajar, letting his scent wave through the halls, uncaring where it flew. Katsuki snarls quietly, irate at it escaping for others to smell.
His Alpha screams. Katsuki learned to tune out the wails and scratching at his mind during the excruciating few days of every other month he is holed up and forced to fuck his fist or die trying. All the dumb thing does is shout “Alpha” this and “Alpha” that, and Katsuki can't stop it, nor the devastating skips his heart makes thinking of red hair and sharp teeth.
Pumping pathetic pools of his cum into soaked sheets, all his lips can taste every single time is Eijirou's name.
What if it's against ‘customs’ or whatever mumbo jumbo those council fucks made up? If his Alpha perceives a connection with another Alpha–an Alpha Prime Katsuki is emotionally tied to–so be it.
But this scream his Alpha makes is feral, animalistic, gnawing at the bars of its invisible enclosure and begging to be freed. Katsuki sighs, wanting to cave, wanting to release the pent up energy.
Eijirou throws him on the bed just as he lets it out.
Eijirou meets his bites with ferocity, tugging his hair and shredding clothes with hardened fingertips. Sheets and bedding fly off in their haste, Katsuki huffing Eijirou in like oxygen when he rips the patches off and sticks his nose right against a scent gland. A hand fumbles to grip Eijirou, continuing where he left, or at least attempting to with all the precum soaking Katsuki's palm.
He doesn't notice Eijirou nearly topple the nightstand over to grasp his ¾ empty lube bottle and open it, covering Katsuki's ass and his open hand with the liquid. Katsuki sucks the cinnamon tang out of the Alpha Prime's glands, recognizing a hint of apple he hadn't smelt before. It could be because he's aroused?
His mouth lets go with a pop, a cracked moan leaving his lips as one of Eijirou's fingers penetrates him, shoving all the way to the knuckle quickly. Thank God Katsuki plays with himself a lot, otherwise that would've been intense.
The Alpha Prime holds him against the bed, every writhe and squirm Katsuki makes blocked by Eijirou's unrelenting grip. He salivates, missing his best friend's flavor that's become a permanent resident on his tongue, and he says as such. It's silently eradicated as Eijirou surges down and shoves his lips on Katsuki's to silence the sounds he spouts.
Another finger joins. And another. Katsuki gasps, keening in the brush Eijirou's middle finger does along his prostate, a tease for what's to come. They stretch and toy with Katsuki's walls, turning the blond into a panting, sweaty mess.
All too soon, they yank out, Katsuki clenching over the ghost of them. The hand on his chest moves to grab the back of Katsuki's thigh while the other positions Eijirou's well lubricated cock in position.
For a moment, maybe a few seconds at most, a shine of clarity hits Eijirou's eyes and he meets Katsuki's foggy gaze. “Kats, I won't be able to stop.”
It's a warning. He's being honest and Katsuki is grateful for it. With a slow nod, Katsuki croaks a small, “Knot me, Alpha.”
That's all Katsuki gets to say. There isn't a slow descent of Eijirou pushing in. There isn't a pause to let Katsuki get used to the heavy intrusion once he does.
Eijirou grabs the blond's hips and drives his cock in with such force that Katsuki gasps.
The force of his knot slapping into Katsuki's rim with each thrust causes the patches on his neck to slip off. Overpowering Eijirou's rut-driven scent is Katsuki's tang that's easily swept away by the redhead's feral licks.
Pre covers his stomach, rolling slowly in the direction of his belly button so as to mix with the saliva that unconsciously drips out of Eijirou.
“Nasty little Alpha,” Eijirou picks up the pace, “Smelling my clothes like you can't get enough.” He laughs, “How about now? Hm? You got your fill, Katsuki?”
Definitely. His nose is full of Eijirou's scent and his ass is stuffed with Alpha cock. He is so fucking happy.
“All you had to do was ask.” Eijirou tells him, “All you had to do was say you wanted me and I would've said yes.” A winded chuckle, “But no. Instead I find you inhaling me like a starved whore.”
Katsuki never thought he'd get more turned on than he is, but goddamn does hearing that make his dick twitch.
“You like that, huh? Like being told how fucking filthy you are?” Eijirou pummels Katsuki, reveling in the broken moans and shouts of, “There! Right there!” when he hits his prostate.
Sounds of their bodies connecting repeatedly become background noise and everything turns blurry. Everything but Eijirou, who leans down close for their noses to brush.
Katsuki's lips form a goofy smile and he giggles between moans. He's probably right on the edge of going scent and cock drunk, and he doesn't give a fuck. It feels good. It smells good. His mind is relaxed, even though he's getting the shit fucked out of him.
“Alpha.” Eijirou breathes, “Cum on my knot. Cum when I pump you full.” His speed turns unstable, “Gonna breed you, Katsuki. Fill you with pups.”
Just the image of him round with Eijirou's litter brings him closer to the precipice. But the Alpha told him to wait, so he's going to wait. A little longer…
The words Eijirou spouts begin to crumble, becoming nothing but grunts and groans spilling between gritted fangs. His thrusts turn hard and slow, his knot kissing the blond’s rim and pressing in further each time so as to make the collision easier.
All too soon, Eijirou’s hardening activates and wood off the headboard cracks under his fingertips. Katsuki’s back comes off the bed. The strain his leg gives being pushed toward his shoulder doesn't even hurt compared to the stretch his hole has to make to accommodate Eijirou's knot that finally, finally squeezes in.
As Eijirou asked him to, Katsuki moans and cums across his stomach, some of it landing on his pecs. Warmth spills inside him, thick and hot and if he could, he'd cum again just thinking of how much Eijirou is plugging him with.
His neck tingles with sharp pain. Tuning into reality, he realizes Eijirou bit him, barely missing his scent gland and leaving a hideous mark.
But he dismisses it, not fretting over a measly bite. It's about damn time Eijirou claimed him anyway.
With that thought, he allows his mind to drift.
If Katsuki could bottle a smell, it would be Eijirou's.
It isn't something he can describe in one sentence or even vocalize. If a person asked him about it, he'd simply purr and nuzzle his face into the nearest piece of fabric laced in its scent. He did it earlier. It is how he ended up here.
Except now Katsuki is in an enclosed space with said Alpha and heavily intoxicated on his mere presence. Their faces sit close on the pillow, sharing breaths and nudging noses together. The heat would bother Katsuki any other day, but not today. It is invited to mingle with the rest already swimming through every crevice of Eijirou's dorm room.
Cinnamon and oranges swarm the area, a beautiful combination of citrus and sweetness–two words that describe Eijirou and Katsuki respectfully. Hints of sex and sweat collect on the sheets, playfully tickling their amalgamated essence and providing any other sensitive nose of their previous activities.
Or current, rather. They are a bit… tied up.
Eijirou reaches over and grabs the water that fell on its side and uncaps it to take a long swig. Katsuki wraps his arm around the redhead, pleased that he is unable to get away.
“Lift your head for me.” Katsuki does, graciously taking the remaining water offered, “My knot will go down soon.” Eijirou presses his face in Katsuki's neck once he finishes the bottle off, “You took it so well, Alpha. My pretty mate.”
What's the rumbling Katsuki hears? Is one of their phones vibrating on the bed? No, his is in his bedroom and Eijirou's would've fallen off by now–
…Oh. It isn't a phone. It's him.
He's purring.
Katsuki has never purred. He hasn't had any real moment in his life that warranted a purr. Not even when he was initiated in his pack, or was scented for the first time.
Guess being knotted and called Eijirou's mate brought that out of him.
He knows there isn't much reprieve until Eijirou is thrown head first in his rut again. Those minutes after an orgasm are as much as their bodies will allow them to recollect their thoughts and quickly shovel water or food down their gullet before the urge to fuck takes over again. It's worse for Alpha Primes.
Already the scent is growing deeper, heavier. Eijirou's grip tightens on his waist. “If you don't wanna get knotted again, I think you should leave. We can talk about everything later once I'm not in rut.”
Eijirou, giving him an out after roughly fucking him so hard Katsuki can't remember what day it is? Wild. Katsuki laughs, voice quiet, “I ain't goin’ anywhere, Alpha.”
A pause. “Are you sure? Kats, I just–”
“–obliterated my ass so hard I can't walk?” Katsuki licks Eijirou’s gland, “I won't move even if I wanted to. So make it up to me by making me feel good again, Red.”
Eijirou straddles Katsuki in response and pumps out his scent, smiling when the smaller Alpha all but melts.
Both Alpha's will have a long chat tomorrow when they wake up and their friends bang on the door to complain about the mess they left in the laundry room.
For now, their scents will intermingle and become one, just as Katsuki and Eijirou have.