Work Text:
“Shouto, I’m off! Gonna be fucking late again,” Katsuki calls, grabbing his coat from the messy rack in the hallway.
“Coming!” Shouto shouts back from the kitchen and pads quickly to the front door. Katsuki smirks at the sight of him and pulls him into his arms for a quick kiss, resting his hands on Shouto's waist. Shouto’s uncharacteristically soft and pliant in the early morning, looking every bit like someone who’s just rolled out of bed, with his messy hair and rumpled clothes. Katsuki pecks his lips again, his cheek and then dives to nuzzle his neck, working on scenting the omega.
“Do you really need to do this every morning?” Shouto hums, complaining even as he tilts his head to accomodate Katsuki.
“Of fucking course,” Katsuki says, feeling slightly affronted. “I really need everyone to know you’re mine.”
“People at the office just think I’m an alpha now, babe,” Shouto laughs softly and gives Katsuki another kiss when he finally pulls away. He flattens imaginary creases on Katsuki’s work shirt with the palms of his hands and smiles sleepily.
“That’s cute,” Katsuki says, amused, stepping back and fighting every instinct that tells him to manhandle Shouto back to bed.
“Have a nice day,” Shouto says, watching Katsuki walk backwards to the door just so they could keep looking at each other. It’s extremely dorky, definitely not something Katsuki would've done when they first met, so Shouto allows himself to enjoy it.
“You too,” Katsuki says, finally out of their apartment. “Try not to be fucking late for work today.”
“Love you too,” Shouto says quietly as Katsuki closes the door. He smiles to himself, despite their inability to openly communicate their feelings probably being enough to keep couple counselors up at night, and gets ready for the day.
/ /
Shouto walks in the office keeping his head held high and his gaze fierce, his persona completely different from when he was home just an hour ago. He knows that people respect him here, even going as far as admiring him and it’s mostly because, thanks to Katsuki’s meticulousness, everyone believes he’s an alpha.
He never corrected anyone who assumed it —he wasn’t stupid. Although he doesn't mind being an omega, fronting as an alpha has many advantages, the biggest one for him being that other alphas don’t bother him. Except Midoriya at times, but that was mostly healthy competition so it wasn’t a big deal. The main point was he didn’t have alphas up in his face, feeling entitled to have his attention or hitting on him for no other reason than his scent.
Shouto was simply happier like this.
/ /
“There he goes,” Ashido hums appreciatively as she sips her coffee, eyes trained on Todoroki. Kaminari, who’s stirring his own coffee next to her, rolls his eyes.
“You and the other omegas are still fawning over him?” Mineta asks from his nearby desk, irritated like each time he spots Todoroki around ever since the alpha had terrorized about sexual harassment in the workplace him a couple of months back. He wasn't even doing anything wrong. (He was).
“I don’t think we’ll ever stop,” Ashido says honestly and shrugs.
“I don’t get it. Yeah, sure, he's tall, but you always go on about muscles and ruggedness,” Kaminari says and waves his hand around. “And like, he's quiet and keeps to himself. Looks on the skinny side. And he's definitely too pretty to be rugged.”
“I think he looks quite manly,” Kirishima pipes up as he walks by to get to the coffee machine. "He can be scary, too. Ask Mineta."
“He can be,” Kaminari admits reluctantly, thinking back to the time he was scolded by Todoroki too.
“He’s hot,” Ashido dismisses him easily. “And with the way he smells? You just know his knot game is strong.”
Mineta groans and makes a disgusted face. Kaminari agrees with the sentiment wholeheartedly, but it doesn’t stop him from adding, a little desperate: “My knot game is strong.”
Mineta fake gags, but Ashido merely blinks at Kaminari. “And? I didn’t ask,” she says and then she walks off to her own desk, leaving the alpha rooted on his spot, defeated.
Kirishima runs away before Kaminari can hit him for snickering and from afar he sees Midoriya look down, barely suppressing an amused grin.
/ /
“Hey Midoriya, wait up!” Iida calls from afar and Izuku stops on his tracks because Iida is his friend, even though it’s two minutes past 5pm and he would very much like to leave. His favorite actor has a new movie out and he's been dying to go see it.
“What’s up?” he asks once Iida reaches him, prompting him to speak even as the other alpha is still catching his breath.
“They saw someone run to the OHR. An omega, obviously. Their alpha should be there already, though,” Iida supplies. Izuku internally groans at the mention of the Omega Heat Room, a rather self-explanatory location.
“So what do you need me for?” Izuku asks, even though he already has an idea.
“We need you to check on them. See if the omega is doing okay,” Iida says in his diplomatic voice, looking like he hated asking Izuku just as much Izuku hated being asked.
“Why is it always me?” Izuku complains, setting his coat and bag down on a chair, resigned to agreeing. He isn’t a monster after all, they do need to check if the omega is alright. Iida follows him as they walk towards the west wing, where the OHR is.
“All the omegas who work here seem to have left, so we need someone like you, you know…” Iida trails off, unsure on how to breach the sensitive topic.
“Someone with a pathetically weak scent, yeah. Got it, thanks,” Izuku grumbles under his breath. It is a sensitive topic for him. One that trumps his otherwise sunny personality.
“No, that’s not it! Your scent is… Comforting. Reassuring, if you will,” Iida says, sincerely. “You wouldn’t spook an omega in heat, that’s it.”
“Oh,” Izuku whispers and Iida spots a smile tugging his lips. “Okay, okay. I’m going, you can leave now.”
Walking closer to the OHR, Izuku can already smell the omega that’s been there before him. He also catches a whiff of a familiar alpha scent. Todoroki?
Todoroki had an omega from the office? He didn’t recall noticing anything, but then again the two of them had never spoken about private topics before, so he wouldn’t know.
Izuku takes a deep breath once he’s in front of the door, keeping in mind to make himself look and smell less threatening as not to make either the alpha or the omega uncomfortable. He pushes the door open when he feels ready and the strong and addictive scent of the omega in heat fills his nostrils right away, the sweetness of it making him almost dizzy.
He tries to keep a clear head, even though the smell is heady and goes straight to his crotch, and peeks into the room. Nothing could've prepared him for the scene he finds before him.
Despite the OHR providing a bed, among many other commodities, a figure Izuku immediately recognizes as Todoroki is writhing on the floor, moaning in pure bliss, as another, slightly smaller figure is plunging into him at a worry-inducing pace.
Izuku blinks once, then twice and thrice to try to make sense of what he’s seeing. He doesn’t make a sound and just stares, dumbfounded as his brain connects the dots. Todoroki is the source of the exhilarating omega scent he’s breathing in and the alpha scent he’s familiar with belongs to the guy that’s currently fucking Todoroki. It’s a lot to wrap his head around.
He’s brought back to reality when Todoroki, calm and composed Todoroki, arches his back from the floor and lets out a high pitched, desperate moan as the alpha over him all but slams his dick inside him. It’s pretty violent from both parts; Todoroki digs his nails painfully into the alpha’s skin or tugs at his hair hard, while the alpha doesn’t seem like he’s slowing his thrusts down any time soon. Izuku thinks he can see a nasty looking bite on Todoroki’s shoulder, too.
"K-Katsuki,” Todoroki cries out, voice rough from all the screaming he’s probably done. He tries to squirm around but the alpha —Katsuki, keeps him pinned on the ground unceremoniously. It still doesn’t stop Todoroki from pulling Katsuki closer with one of his legs and whining a string of needy: “Knot me, knot me!”
“So clingy,” Katsuki grunts and hikes Todoroki’s legs further up to bury himself deeper. Todoroki’s whole body jolts and Izuku clearly sees Katsuki smirk predatorily at the omega. “There, princess?”
“Th-there!” Todoroki confirms with a pitiful sob that makes even Izuku’s cock twitch. Katsuki pulls all the way back before thrusting in with force, the raunchy sound of skin slapping skin and the squelching of Todoroki’s wetness blending with the omega’s wanton whimpers of alpha and please.
Izuku swallows, enthralled by the scene, and forgets he’s supposed to be invisible, forgets he’s not supposed to stay and watch like a creep. Just then, Katsuki seems to detect Izuku’s own alpha scent. It’s weaker than his and less aggressive, but it’s still another alpha in the presence of his omega in heat.
Katsuki’s head snaps up as he locates the smell, ready to rip a throat or two, and locks eyes with Izuku. Katsuki slows his hips down and lets Todoroki’s legs slip from his shoulders, only for them to coil around his waist while the omega petulantly whines and demands for more.
Izuku swallows for a whole different reason when Katsuki ignores Todoroki in favor of keeping his unwavering gaze on him. He feels sweat prickle at his hairline, engulfed by primal fear. He has no doubt that Katsuki could kill him, intoxicated by Todoroki’s pheromones as he was.
With difficulty, Izuku snaps out of his own high and bows his head, trying to show submission before Katsuki can actually jump him. He shuts the door immediately and walks away on shaky legs, heart thumping with adrenaline and dick hard and pulsing. Before he can unpack everything he has seen he has important business to attend to.
/ /
“So you’re an omega,” Midoriya says the second he sits in front of Shouto’s desk. He’s never believed in pleasantries.
“Yes. As if it wasn’t clear enough for you by now, I am,” Shouto replies in a clipped tone, setting aside the papers he’s working on. He doubts Midoriya will stop pestering him unless he answers to the alpha's inquiries.
“Why didn’t you say anything?” Midoriya asks, genuinely curious. He means well, Shouto knows, Midoriya has no mean bone in his body, but he the smile the alpha’s wearing on his face annoys him. Perhaps he's still cranky from his unexpected heat.
“It never really came up,” Shouto brushes him off, hopes to taper down Midoriya’s mood.
“That’s bullshit,” Midoriya calls him out immediately. “You had plenty of chances to say it.”
Shouto sighs. He doesn’t really have the time to discuss with Midoriya right now. His heat has put him behind schedule. “What do you want, Midoriya? Why are you here?” he asks brusquely. “I feel humiliated enough as it is, with you seeing me like that.”
“I didn’t mean to make you feel that way. I didn’t even tell anybody you’re an omega,” Midoriya says, looking at him with his big green eyes, and shakes his head. “I don’t know, I guess I just wanted to see if you needed to talk? It must have been hard, not being yourself around people.”
“I’m doing just fine,” Shouto says. “I don’t need an alpha to rescue me.”
Midoriya sighs and sits back, slightly irritated that someone he considers a friend is talking to him like this. “You could’ve fooled me, with the way I heard you beg for a knot.”
Shouto’s mouth falls open and his cheeks flush red. Midoriya definitely didn't have this cheek when he first started working here. “Fuck right off,” he says, just like Katsuki would, but he looks so appalled Midoriya can’t help but laugh. Shouto shakes his head, still embarrassed, but Midoriya’s laugh has always been contagious and and Shouto’s a little amused as well.
“So, that alpha? Is he…?”
Shouto’s face softens at the mention of Katsuki. “He’s my mate, yes. I think you’ve figured by now, given that I smell like him every day.”
“Wow, and you’re mated too. You’re full of secrets, huh?” Midoriya muses. “Where’s your mark, though?”
Shouto rolls his eyes and the tips of his ears redden. The place his marks is... isn’t exactly family friendly. “Why should I tell you? Haven’t you pried enough already?”
“Because I need to know,” Midoriya says, leaning forward to examine Shouto’s face. “You look flustered. Is it on you butt cheek? Please tell me it is.”
“It’s not on my butt cheek,” Shouto scoffs, pushes himself up. “I have work to do, leave me alone.”
“It’s so on your butt cheek,” Midoriya whispers in glee, watching Shouto stalk off after giving him the finger.