Alpha Kirishima pining after his best friend Bakugou who is an Omega who has sworn off Alphas.

He watches him go through relationship after relationship. Wishing it was him but knowing that if he pursued anything he'd lose the most important person in his life.

The worst part is when he goes into heat. Bakugou smells nice all of the time, but when he goes into heat it takes everything in Kirishima not to bury his face in his neck and just claim.

Everyone else wants him and it kills Kirishima.

But he knows he's not what Bakugou wants. He'll suffer through anything to make sure Bakugou is happy.

Sometimes Bakugou's heats hit him hard and he begs for an alpha.

Well, he begs for Kirishima. Asks why he isn't good enough.

And Kirishima has to leave him alone when everything inside of him is begging him to go to his Omega. Comfort. Claim.

Then he remembers Bakugou doesn't belong to him and never will.

They're out at a club and Kirishima is walking back to Bakugou with their drinks in hand when he notices and unfamiliar guy all over Bakugou.

Every part of him wants to rush over and rip the asshole's hands off of Bakugou. That would only make things worse though.

He can tell Bakugou is getting pissed. The look on his face is almost murderous.

Kirishima smirks.

This guy has no clue what he's in for.

Kirishima approaches them calmly, "Hey, man, I'd back off if I were you. This guy's ruthless when he's mad. Wouldn't want to see you get hurt."

He watches as the guy grips tighter onto where he's holding Bakugou.

"Appreciate it dude, but me and this guy are getting along great. You're gonna have to find your own Omega bitch to play with tonight."

Kirishima watched as Bakugou spun around and throws a punch right in the guys face.

"As if I'd ever let some Alpha fuck like that take me home," Bakugou growled, "let's get the fuck out of here, Ei."

Bakugou was storming off before he'd even finished speaking, leaving Kirishima to chase after him.

Bakugou didn't slow down once they made it outside. He sped ahead, shoulders tense and hands stuffed in his pockets.

When Kirishima managed to catch up with him he reached out a hand and grabbed Bakugou's arm to stop him.

Something was off. Kirishima could tell by the way Bakugou was holding himself. His entire body was tense and be refused to look up from the ground.

"Dude, are you okay? What's the rush?"

"Let's just fucking go. I don't want that creep following us."

That’s when Kirishima smelled it.

The scent of Omega in heat.

Kirishima’s nostrils flared. His heart rate picked up. His mouth was watering.

Bakugou smelled so damn good.

He shook his head a little, trying to shake himself out of it.

“Kat, what the hell? Why are we out at a club when you are in heat?”

“Shut up, Shitty-Hair, I’m not stupid, okay? It wasn’t supposed to come yet. I don't know what happened.”

Bakugou was trembling. His words coming out shaky. He looked up then, meeting Kirishima’s gaze.

“Can we just go? I don’t want to be out anymore. Who knows what other creeps might try.”

Kirishima stepped closer, wrapping an arm around Bakugou, “Yeah, let’s get you home."

Kirishima was struggling. The longer they walked, the more out of it Bakugou was becoming.

He was currently pressed right up against Kirishima’s side, his head nuzzling into the side of his neck.

Right next to his scent gland.

Fuck.

“Kat, do you mind? We’ll get you home faster if you focus on walking a little more, bro,” Kirishima spoke gently. He didn’t want to distress Bakugou anymore than he already was.

“Mmm. You smell so nice though, Ei,” Bakugou let out a soft sigh, nuzzling even closer, “you smell like home. Safe.”

Kirishima looked up to the sky for a second and taking a deep breath before letting it out. Only regretting it a little when his nose immediately fills with the sweet smell of vanilla and caramel.

He wants to bottle it up and keep it forever.

He knows Bakugou doesn't mean for those words to hurt, but they feel like a stab to his heart.

He wants nothing more than for those words to be true but he knows Bakugou doesn't mean them. It's his heat talking.

He'll never want Kirishima that way.

It's fine.

Really.

Kirishima prepares himself to suffer for the rest of the walk home. He may completely head over heels in love with Bakugou, but he’s his best friend first. There’s no way he’s going to leave him in this state so any creep could try to take advantage of him.

His mouth pulls into a scowl.

Let someone try.

He’ll rip their throat out if he has to.

He can tell that his mood is starting to effect Bakugou because he feels him tense up and let out a small whine.

“Ei, I’m sorry. I’m a bad Omega. I’ll be better. I’m sorry. I’m sorry, please, don’t leave me,” Bakugou begs.

“Kat, what are you talking about, dude?”

“You smell unhappy now. I just—I’m sorry. I’ll be good, I promise.”

Kirishima stops walking then and pulls away just far enough away so he can tip Bakugou’s face up towards his.

“Hey, I don’t know what you’re apologizing for. I’m not…it’s not you,” Kirishima lifts his hand up to cup Bakugou’s face, “you’re perfect, man. Trust me.”

Bakugou just nods, flushed face moving back to hide in Kirishima’s neck, a content sigh leaving his lips.

“Mm. Happy Alpha. I wanna make you happy. Be good for you.”

The rest of the walk doesn’t take much longer and by the time they are outside of Bakugou’s door, Kirishima fumbling with the keys, Bakugou is so far gone, lost in the beginnings of his heat.

He’s pawing at Kirishima’s clothes with clumsy hands, face flushed and a little sweaty, whining about how he needs to be touched.

Kirishima stays silent, focusing on getting Bakugou into his room.

Getting him in bed.

Alone.

Without Kirishima.

While he’s begging for relief.

Begging for relief from Kirishima specifically, with his hands all over him, his delicious scent even stronger now that they are in his own home.

Kirishima is tense, moving on autopilot and not really thinking too heavily about what he’s doing. He just knows there are things he needs to do to help his best friend out.

It isn’t until he’s in Bakugou’s bedroom with him, helping him out of his clothes to change into pajamas, that he realizes how badly he’s fucked up.

Bakugou is sitting on his bed with his shirt off and struggling to get his pants unbuttoned. He has a beautiful blush on his cheeks that reaches all the way down to his chest. His blonde hair is mussed, slightly damp with sweat.

His hands move to rest on top of Bakugou’s, stopping them.

He looks up at Kirishima then, his eyes wide and soft, pupils blown wide. Kirishima is hit with another wave of Bakugou’s scent.

He feels his breathing getting shorter, his pulse is racing, and everything is getting hazy. He can feel where he is getting hard in his pants.

Bakugou frees his hands, wrapping his arms around Kirishima’s neck and holding him close, “Ei, please. I need you. It hurts so bad,” he whispers, voice cracking.

Those words make something break in Kirishima, the resolve he’d been trying to hold onto crumbling.

He leans in.

Kirishima works one of his legs between Bakugou’s and starts rutting against him and he can feel Bakugou’s erection through his pants.

Bakugou’s panting in his ear, needy gasps and whines. It’s like music to Kirishima’s ears, a song meant just for him and he wants so bad to hear it again and again and again.

Bakugou lays back on the bed and pulls Kirishima down with him. Kirishima feels his hands move down his back, leaving a trail of heat in their wake.

And then they move under his shirt and its skin touching skin and Kirishima feels like he’s on fire and he can’t help the moan that escapes his lips.

He wants this so bad. He could have this forever, right?

Claim. Claim. Claim.

He opens his mouth, teeth pressing against the sensitive skin on Bakugou’s neck.

And then his eyes glance to the side and he sees the picture on Bakugou’s bedside table. It was from a New Year’s Eve party a couple of years ago. It’s them sitting on a couch with Kirishima’s arm wrapped around Bakugou’s shoulders.

Kirishima has on a pair of those dorky glasses with the year and a party hat, smiling extra cheesy at the camera. Bakugou is beside him scowling but he’s leaning his head against Kirishima anyway. You can see the remnants of his own destroyed party hat sitting next to him.

That was the night they found out that Bakugou’s asshole of an ex had been cheating on him for months and had fucked off with a bunch of his stuff before they could do anything about it.

He’d spouted off some bullshit about needing as Omega who actually acted the way they were supposed to, not some wannabe Alpha.

That was the night he swore off Alphas for good.

And Kirishima remembers spending the entirety of that night doing everything in his power to make him smile. He had to make sure that he knew he was more than whatever his piece of shit ex thought of him.

He didn't have much luck, honestly, but when the end of the night came and Kirishima had managed to get a couple smiles and Bakugou whispering a quiet thank you to him before they passed out on the couch he felt like he'd done at least something a little right.

***

Kirishima pulls back and sits up. It feels like a bucket of cold water has been dimped on him. His blood turns to ice inside of his veins.

What the fuck is he doing.

He stands up and backs away from the bed in a hurry, the feeling of dread working it’s way up into his throat. He might get sick.

“Ei? What’s going on?” Bakugou sits up, distressed. The air around them that was previously full of the sweet scents of warm caramel and sugar changing to a burnt smell that leaves a bitter taste in Kirishima’s mouth.

“Kat, I—I can’t do this. I’m so sorry,” Kirishima is fumbling with the door behind him, his clammy hands making it hard to grab the handle and turn it, “I gotta go, man. Please just…just stay here, okay?”

Kirishima rushes out of the room, stumbling over his feet as he races through the apartment. He can smell the burnt smell all the way out here.

It’s so strong he feels like he could choke on it. Bakugou hasn’t followed him out here though which is a small blessing in this fucked situation.

Not that it really makes that much of a difference because he can still hear him crying. Small, choked sobs breaking past his lips. Almost definitely accompanied by big, wet tears falling down his face.

Kirishima clenches his fists and grits his teeth. He can’t turn back now. It’s not right. Bakugou doesn’t actually want him and he almost forced himself on him just now.

Some best friend he is. He’s no different than any of the other shitty Alphas Bakugou has had to deal with.

He walks through the living room and out the door, every instinct in him telling him to turn around. To go back and comfort his Omega.

Every step he takes away from Bakugou feels like his feet weigh 1000 pounds. Every cry that escapes his lips a punch to the gut. But Bakugou doesn’t belong to him.

He touches his face and it’s wet.

Oh, he’s crying too.

Good.

By the time he steps outside of the apartment it feels like his lungs are full of smoke and the fresh air in the hallway is a blessing. He reaches a shaky hand into his pocket and pulls out his phone.

It rings three times before someone picks up.

“Kiri? It’s like…after midnight. What’s up, man?” Sero asks, sleepy voice full of confusion.

“Um. I'm at Bakugou’s house and I fucked up. I fucked up real bad, Sero,” Kirishima says, attempting to hide the tears in his voice but he knows he failed, his voice coming out watery and choked up anyway.

“What do you mean, Kiri?”

“I mean,” Kirishima pauses here, taking a deep breath, “I mean that I’m in love with Bakugou and I fucked up. Can you come over here and check on him? I have to leave but I can’t just leave him alone, Sero.”

“…Yeah, I’ll be over there. We’re gonna talk about this later though, man.” Sero replies, concern evident in his voice, but he doesn't question anything further.

Kirishima just makes a sound of agreement before hanging the phone up. When Sero arrives looking sleep rumpled and worried the guilt Kirishima was already feeling quadruples in size.

He doesn’t stick around long after Sero gets there. He doesn’t want to see his look of disgust and disappointment when he realizes what happened. And he doesn’t dare enter the apartment again so there’s no real reason to stay.

Sero's got this under control.

Sero will take good care of Bakugou.

He's got it under control.

Kirishima repeats this to himself the whole way home, hoping that the more he thinks it the more he'll believe it.

Bakugou is okay. He's gotta be okay.

They've gotta be okay.

Kirishima gets home and makes an immediate beeline for his bedroom, kicking off his pants and falling into bed. He doesn’t even bother to pull the blankets over himself.

As much as he tries sleep doesn’t come though. He watches the numbers on his clock go up, up up. By the time his alarm goes off he still hasn’t gotten a wink of sleep.

He rolls over and shuts it off before making a quick call to his boss to let them know he won’t be able to make it in for his shift.

He avoids the several unread text messages and missed call from Sero just like he did when they first came in.

As soon as he’s off of the phone he tosses it away, not really caring where it lands.

With thoughts of Bakugou playing on repeat in his mind he eventually falls into a fitful sleep.

That’s how things go over the next few days. Kirishima doesn’t leave the house. Instead he stays in bed, avoiding everyone except the delivery drivers who he has become pretty familiar with at this point.

He hears the knocks on his door when he’s not expecting anyone. He hears his phone ring over and over again, missed calls and unread texts piling up but he’s not thinking about them.

He knows his friends want to talk to him but he just can’t face them.

And when he does bother to pick up his phone and look at his notifications he can’t help but notice the lack of contact from Bakugou. Kirishima tries not to think about how he was right and Bakugou probably never wants to see his face again.

His heat has to be over by now. Bakugou has always had a quick cycle. The only logical reason for his silence is that he realized his shitty best friend came on to him when he was drunk and in heat and he doesn’t want anything to do with him.

Kirishima is in the middle of debating the pros and cons of moving to another city and starting over when he hears his phone start ringing again, the sound muffled from where its buried somewhere in his sheets. He scrambles to answer it when he sees his mom’s face on the screen.

“Mom! Is everything okay? You never call without texting first,” Kirishima answers, his words spilling out of his mouth in a panic.

“I’ve been trying to talk to you for days. Did you know that you’re really hard to get a hold of, Ei?”

Kirishima feels his stomach drop and panic rise for a completely different reason now.

That’s not his mom’s voice speaking through the phone.

“Mina? What—How…why are you calling from my mom’s phone?”

“Well I was over here picking up some stuff she wanted to get rid of when I got a frantic call from Sero—you need to call him by the way, says you have some explaining to do.”

He hears his mom giggling in the background and his panic dissipates a little knowing that everything really is okay with her, but then Mina starts talking again.

“Anyway, Sero calls me freaking out because he’s been babysitting a moody Bakugou with no explanation from EITHER of you for the past few days. And you’d know this if you’d bothered to check your phone, but apparently Bakugou--"

Whatever she was planning on saying is drowned out by the angry pounding on his door accompanied by irritated shouts.

Kirishima freezes where he’d been trying to untangle himself from his sheets and get out of bed. His blood is pounding in his ears muffling everything except the sounds at his door.

Bakugou.

“Ah, yeah, there it is. Guess I wasn’t fast enough. Answer your friends next time. I’ll let you go…deal with that,” Mina finishes as the pounding on the door gets louder and more insistent.

“Yeah, bye…” Kirishima mumbles into his phone but Mina had already hung up.

“I know you’re home, Shitty-Hair! I saw your car outside. Open the damn door!” Bakugou yells.

Kirishima drops his arm to his side and takes a deep breath, steeling himself to deal with Bakugou’s wrath. This was the moment he’s been trying to avoid.

He’s not ready to see the betrayal in Bakugou’s eyes or hear Bakugou say how disgusted he is, how he doesn’t want to see his face or be around him anymore.

Kirishima feels his stomach turn.

Ignoring the sick feeling in his stomach and the shakiness in his legs as he gets out of bed he moves towards the door.

He unlocks the door and opens it slowly, only letting it open just a crack so he can peek his head out into the hallway.

“Oh, hey, Katsuki!” Kirishima says, trying to make his voice come out normal but he knows he’s failed. Instead, when he speaks his voice comes out high-pitched and squeaky.

“Don’t ‘hey’ me, asshole. You gonna let me in?” Bakugou grits out.

“Well, I would but I’m kind of busy? Maybe later I can text you or something…”

Kirishima hears Bakugou’s slow exhale and the sound of his teeth grinding together. He winces. That probably doesn’t feel too great.

“Yeah, I’m sure you’ll fucking text me. You’ve been so great at it, you know, with your whole disappearing act and all.”

Kirishima’s grip on the door loosens, “Kat…it’s not—I can explain. I just—”

But before he can finish he’s being shoved aside as Bakugou takes advantage of Kirishima’s distraction and pushes the door open enough so he can shoulder his way into the apartment.

Kirishima stares open-mouthed at Bakugou. His ability to always get what he wants somehow both frustrating and awe-inspiring, “Sure, come on in, Kat, no problem.”

Kirishima turns around and that’s when he really looks at Bakugou for the first time. His heats are normally quick but they are rough and leave him more exhausted than most omegas afterwards.

He looks especially rough now though.

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