alphas crying during their ruts because they’re lonely and everything hurts, their teeth, their knot, their claws. you would think omegas get more depressed when spending their heats alone, but the aggressive frustration of loneliness makes most alphas sob at some point.

rutting bakugou crying because his desired mate is next door but doesn’t want him. his mouth is bleeding from his elongated canines cutting his lips and tongue. his sheets are ripped apart and his room is an absolute mess as he heaves in the dark corner.

kirishima hears him, obviously, and the scent of a miserable alpha in rut is practically suffocating, so of course he risks his own safety and goes over there to comfort him.

the first thing bakugou does is kiss him and try to get eijirou to touch him, but kiri knows he’s not in a state of mind where he can truly consent, so he pulls away and focuses on putting out a calming scent and cuddling him. even though he’d love to sit on his knot.

he doesn’t realize it, but his plan has the opposite affect of what he intended, and the rejection from kirishima makes bakugou’s rut induced depression a million times worse.

kiri has an incredibly high pain tolerance (and is a bit masochistic) so he lets bakugou bite his arms and shoulders to help relieve some of the pain in his gums, but bakugou wants to claim him so bad that it hurts to bite eijirou anywhere aside from his scent gland.

but he can’t do that. kiri isn’t stupid, and he walked into a rutting alphas territory, so he obviously wore his protective collar, which bakugou sees as another blatant sign of rejection.

to top it all off, kirishima is giving him a constant stream of sweet, affectionate words, kisses on his forehead, bringing him food and feeding him, and the conflicting signals only make his frustration worse.

he doesn’t understand, and his current hormone ridden brain is not helping him figure it out any further than the fact that kiri is a perfect mate, and he’s turned bakugou down so many times that there must be something wrong with katsuki himself.

half of the reason kirishima is even there, is because of how deeply it can traumatize an alpha to have a “dark rut”, since their feelings are so overwhelming and their mind is incapable of processing it properly, similar to a bad trip on psychedelics.

he can’t tell that he’s only making everything harder on his alpha prime best friend.

the main sign of a dark rut getting serious, is when they lose their sex drive. the entire /purpose/ of a rut is to mate, so when they no longer feel the need to have sex, it’s because their alpha has given up on them finding a mate.

that instinct was originally to protect weak alphas from attempting to challenge a stronger one for a mate while unable to control themselves, so when an alpha /prime/ starts showing those symptoms, it’s more than concerning.

and bakugou’s actually just screwing himself over because he’s so picky. his alpha wouldn’t be nearly as upset if he wasn’t so emotionally attached to kirishima.

the fact that he’s demi doesn’t help, because he can’t just go out and find someone else to knot, even in rut, and knotting his fist just feels pointless now that even his alpha has given up.

he wants pups. he wants pups with eijirou, but eijirou doesn’t want him. everything hurts.

kirishima doesn’t know what to do. bakugou has been completely unresponsive to him for over an hour, and the only noise he’s been making is occasional deep choked sounds.

what he would give to have bakugou yelling at him right now

he hasn’t slept, he swats eijirou’s hand away when he tries to get him to eat, he’s barely even moved.

kirishima can’t even articulate how much he’s against what he’s about to do, but desperate times call for desperate measures. he closes his eyes and pushes out a scent of arousal and need.

it takes bakugou a bit longer that it should to notice, but he finally looks up for the first time in hours.

“Mate?”

bakugou crawls over and lightly runs his fingers over eijirou’s collar with a small frown. kirishima never expected to think of a rutting alpha as cute.

eijirou is not going to sleep with him, he still stands by his beliefs on that, but maybe future lucid bakugou won’t be too mad at him if they just kissed. hopefully he’ll understand why kirishima did this.

at least present bakugou is very approving of the lips pressed against his. he shows his approval by pushing his tongue into eijirou’s mouth and holding onto him like he’ll leave if he lets go.

kirishima knows how to avoid his own sharp teeth, but bakugou’s canines catch on his lips more than once. the alpha pulls away with a small whimper and a deep look of concern when he tastes blood.

eijirou makes it very clear he’s alright and more than happy to continue kissing, and bakugou lets out a little satisfied huff before he goes back to kissing him like he’s starving for it.

bakugou alternates between whining and growling every time kirishima guides his hands away from between his legs. he doesn’t understand, his omega is aroused and kissing him, why won’t he let him touch?

eijirou would love to let bakugou feel him up in any other situation, but he’s still in rut, a /dark rut/ at that. kirishima would never forgive himself if he took advantage of him in this state.

“No. Pants /on/.”

bakugou lets out a long whine that sounds so desperate it hurts. eijirou finds himself on his back with the trembling alpha above him.

bakugou’s kisses are getting deeper and more intense until he seems to lose confidence and they turn into little apprehensive pecks.

eijirou takes the lead in hopes that bakugou will understand that making out is good, but bakugou takes it as the go ahead to try and touch him again. kirishima feels like shit when he sees the hurt look on bakugou’s fave after he shuts it down again.

“Why?”

“You’re in rut, we can do that later, okay?”

bakugou looks at him with that same distressed expression like he doesn’t understand a thing eijirou is saying.

he doesn’t know how to properly explain it to bakugou when his brain is only working at a fraction of his average intelligence.

“Uh, mate AFTER rut.”

“Not mate?”

eijirou is not cut out for this.

“No, not right now.”

bakugou is pressing short kisses all over his face and he pulls back every time like kirishima is going to shove him off.

“Why? Why, why, why?”

“Later, Katsuki. Come here.”

eijirou grabs him and guides him to set his weight on his elbows when he sees bakugou’s arms start shaking.

bakugou hisses when eijirou pulls his hips down to grind against him and kisses him again. he doesn’t understand.

this isn’t right. there aren’t supposed to be clothes between them, they’re supposed to be mating. his omega is turned on and licking into his mouth, why won’t he let katsuki touch? it hurts everywhere.

he doesn’t like it. he loves kissing him, he loves him in general, but eijirou rejects him always. does he even want katsuki right now? why is he doing this?

bakugou can’t stop though, and kirishima feels like he’s being humped by a horny dog with the way bakugou is rutting against him from his place between his legs.

it feels amazing, but he’s so scared bakugou will hate him after all of this. kissing is one thing, but dry humping hard enough that eijirou is being pushed up the floor while aggressively making out is something entirely different.

their pants are thin enough that eijirou can feel exactly when bakugou’s tip pushes against his hole. he wonders how deep he can go, even with their clothes, because he knows his underwear have been shoved inside of him a bit.

yeah, it’s uncomfortable to have fabric pushing into him, but he loves the grinding, and he’s really more focused on trying to make bakugou feel better.

bakugou, who is currently biting eijirou’s jawline right above where his collar starts, and crying.

he nearly screams when he finally pops a knot in his pants and the noise sounds far more pained than satisfied.

he crawls away without even looking at kirishima and sits facing the wall with his arms wrapped around himself. eijirou has no idea what to do.

bakugou’s alpha has never been more heartbroken, and he can feel it in every inch of his body. why is the omega he loves being so cruel to him?

his rational mind is out of order right now, and all he knows for certain is that kirishima made him finish in his pants so he couldn’t mate him.

is he really so undesirable that eijirou would trick him like that to avoid mating? he even kissed him, he initiated it all, so it must’ve all been fake. stupid, he really thought kirishima was actually courting him. so stupid.

“Hey, Bakugou?”

eijirou gets more concerned every time his friend doesn’t respond to him, and continues clawing long lines in the painted wall with a single finger.

he thought getting him off would help! like, maybe push him back into a regular rut. he’s getting scared, he’s heard so many horror stories about alphas who never fully got over their PTSD from a dark rut.

he doesn’t know what caused this, and he doesn’t know how to fix it if he can’t even find the source. he doesn’t trust bakugou’s mental state enough to leave him alone, but he needs more information, so he sprints back to his room to grab his phone.

he doesn’t even consider how bakugou would interpret eijirou running away after kissing him.

if he thought everything hurt before, it was /nothing/ compared to now. eijirou had kissed him, tricked him, and ran from the room.

did his perfect omega think katsuki was going to, /force/ him? is that why he made katsuki come like that? is he scared of him?

no, kirishima is strong and smart, he’s never been scared of him, and he would know katsuki would never try something like that, right?

it hurts. it feels like that’s the only thing he’s sure of, it all hurts. he doesn’t even know if the pained howling is coming from himself.

he hates himself, he’s so angry. why is he alone? he’s always alone. he doesn’t want to be alone when there is someone out there he wants to be with.

he failed. he never would’ve expected his mind to venture towards deku while he’s in rut, but he can’t avoid thinking about it. deku has a mate. deku beat him again.

he wants eijirou to come back. he wants eijirou to understand how he feels. he wants to understand what eijirou said to him. probably that he hates him, eijirou probably hates him.

why wouldn’t he hate him? he’s terrible. unwanted. disgusting. weak. what kind of an alpha prime sobs on the floor during their rut?

the kind that doesn’t deserve someone like kirishima. kirishima is perfect and strong. so strong. everyone loves him. everyone /loves/ him.

katsuki is so embarrassed that he came on to eijirou that it turns into anger. anger at himself, his alpha, his rut, even at kirishima for coming over here just to hurt him and run away. he hurts.

his den is useless. he made it as clean and comfortable as possible at the beginning of his rut, for himself and for the deeply buried hope that someone might share it with him. stupid.

he hates it now. everything he so meticulously set up is a reminder of that embarrassing hope.

eijirou was barely gone for two minutes, but he returns to the most violently destroyed room he’s ever seen.

“No, no no, Katsuki what did you do?”

he drops to his knees in front of bakugou, whose skin is littered with bleeding scrapes and cuts.

it’s not hard to figure out how he got the wounds, given the state of his bedroom, and the fact eijirou doesn’t see a single singe mark anywhere, which means he did all of this with his bare hands.

he’s sitting in the broken glass from what used to be his sliding door, and kirishima knows he’s needs to move him, but he doesn’t see anywhere that would be even a little bit comfortable.

his floor is covered in splintered wood, shards of glass, and other unidentifiable debris, and his bed has been torn to pieces, mattress and bed frame included.

eijirou whines out loud. he needs to go get first aid supplies, among other things, but he’s really fucking scared of leaving again.

“Why?”

he really doesn’t think bakugou should be the one asking that question right now.

he doesn’t even know what he’s referring to.

“Why what?”

“You. Why here?”

“Because I care about you and I want to help.”

bakugou mouthes the word “help” with a look on his face that says he doesn’t believe him. eijirou tries a different approach and kisses his cheek.

“I care.”

“Care.”

bakugou is mulling over every word kirishima says like he’s trying to remember what it means.

eijirou groans again. even with how worried he is, he seriously /needs/ to get supplies.

“I’ll be right back, okay?”

bakugou whines when kirishima stands up.

“I’m coming back, I promise, I just need to get some stuff. Right back, one minute.”

katsuki knows what that word means, back. eijirou is saying he’s coming back, but katsuki still frowns deeply. he doesn’t believe him.

he doesn’t understand. he knows what eijirou said when he kissed his cheek, but it doesn’t make sense. why did he say that? katsuki knows it isn’t true.

kirishima returns, holding more things than katsuki thought possible. he walks over to the cleanest corner before blindly clearing the floor with his foot and dropping his pile in the clean area.

he gets to work immediately, and katsuki is even more confused, if not a tiny bit hopeful. eijirou brought blankets, pillows, and a few well loved plushies. he’s building a nest.

bakugou has never even seen him make a nest in his /own/ room. he once saw the remnants of one a few days after kirishima’s heat, but his bed is usually just a mess of soft items.

which makes this all the more confusing. he doesn’t smell any signs of an impending heat, so why is he doing this? and in katsuki’s ruined den?

eijirou sits back with his hands on his hips and nods when he’s set it up to his liking. he’s glad he made it in the corner, that made it much easier to achieve the cosiness he wanted.

the blankets are thick enough that it won’t feel like they’re laying on the ground, and he brought enough pillows that it looks more than comfortable.

he added the only pillow of katsuki’s that wasn’t ripped apart, and he feels like that might make bakugou feel more welcome in it. he’ll even let katsuki hold his beloved deer plushie if it could help him feel better.

katsuki is so confused that his head is hurting. is this a trick? why is eijirou beckoning him into the nest when he so obviously doesn’t want katsuki?

he realizes his pride has already been shattered enough times today that even if eijirou rips it out from under him, he’s probably not capable of feeling much worse than he already does.

but eijirou doesn’t do that. no, eijirou guides him to lay down and takes out a wet cloth to start cleaning his wounds.

katsuki is scared to even move. he messed up before, and eijirou turned him down and ran away, but now he’s back and taking care of him. if he messes up again or moves wrong, will eijirou leave for good?

but that doesn’t make sense, if he wasn’t planning on making a quick getaway, he wouldn’t have brought so many important things. he wouldn’t have made a nest in katsuki’s room. he wouldn’t have invited katsuki into said nest.

katsuki decides he doesn’t care if this is a trick. he likes the feeling of eijirou’s hands on him, he likes the sound of his quiet purring, and he likes the calming scent he’s giving off. katsuki doesn’t want to leave this nest, he hopes eijirou lets him stay.

eijirou finishes cleaning and bandaging him pretty quickly, and katsuki is briefly worried that means he’ll have to leave now, but kirishima just lays down and cuddles up to him before pulling out his phone to read something on it.

katsuki wants to cry again. he’s so confused and hurt, and the fact eijirou’s giving him such mixed signals doesn’t help any if that. he closes his eyes and tries to fall asleep.

kirishima has never been so thankful for the second sex institute in his life. it takes him no time at all to find what he’s looking for on their website, and he really, really needed a win right now.

‘Depressive ruts, more commonly referred to as dark ruts, are one of the least discussed alpha phenomena. Only five percent of alphas will experience one in their lifetime, and they often go untreated due to shame or fear of judgement from peers. -

Depressive ruts can be caused by many different factors, including career stress, unstable home life, and sometimes just pure biology. However, the most common cause is an unrequited courtship.’

of course, bakugou must be upset because the omega he likes rejected him!

god, eijirou’s so stupid, of course it’d be something like that. oh fuck, no wonder he got so much more depressed after kirishima practically forced bakugou to make out with him.

that hurts more than he’d like to think about, but this isn’t about him, bakugou is the one in pain.

maybe getting the omega that he likes to come help him could be a good idea? eijirou pulls up a class picture on his phone, and gently guides bakugou’s face towards it.

“Bakugou, can you tell me who you want to mate? Point.”

bakugou grumbles and doesn’t hesitate to point at eijirou’s chest.

“Mate.”

“No, I mean out of everyone, who is it you, uh, who do you love?”

he tilts his head in an adorable display of confusion and points at eijirou again.

“Mate?”

“No, dude, look at the screen, point at the person on here.”

kirishima gestures at his phone and bakugou furrows his eyebrows like it’s frustrating him that he isn’t understanding. he aggressively pokes on eijirou’s face in the picture.

“Mate!”

kirishima really hopes bakugou means that, but he has to be sure. he opens the class’ individual photos and starts swiping through them, holding it out to a pouting bakugou each time.

his arms are crossed and he frowns at kirishima’s phone, and he gives a frustrated shake of his head at every picture. of course, until it gets to eijirou again.

he jabs his finger at the screen in such a quick succession that the picture keeps zooming in and out on kirishima’s nose.

“Uh, me? Mate?”

bakugou throws up his hands and flops back into the pillows while sighing loudly, like eijirou just realized that two plus two equals four.

kirishima nods and hesitantly goes back to his position of letting bakugou curl around him while he tries to read the article. he skips a few paragraphs that don’t seem important.

- Their alpha will be trying to determine if it is time to give up, so to speak, and they will be paying close attention to any possible rejection from a desired mate. Rejection is detrimental to an alpha in a dark rut.’

eijirou feels like the shittiest person in the entire world.

he basically rejected bakugou like a thousand times! they were only “not now” rejections, and not flat out “no”s, but he doubts bakugou is capable of understanding that at the moment.

fuck, he’ll be lucky if bakugou will ever even speak to him after this, he must’ve made this whole thing so much worse for him.

he just wanted to help, but he should’ve looked up this stuff before he ever came over here.

he skims through the rest of the article, and a couple more, but they all come to the same conclusion. bakugou needs to fuck.

the internet stuff says people usually bring in professionals for this sort of thing, but if the alpha has already imprinted on someone, no one else will suffice. and if bakugou really meant what he said about the whole mate thing, then..

“Ow! Cut it out!”

bakugou whines into his neck and doesn’t let go of where his claws are digging into kirishima’s skin. he’s panting loudly and writhing like he’s in pain. actually, according to the internet, he’s /seriously/ in pain.

“Hey, stop that, you’re gonna hurt yourself!”

eijirou tries to push bakugou’s face away from where he’s scrubbing it on the omega’s collar, but he seems way too determined to be deterred.

kirishima can see the cut on the bridge of his nose that he’s already made, and the bright red scratch on his cheek that’s only growing.

“Stop!”

bakugou doesn’t listen to him, or stop rubbing on the collar, even when he splits his lip on it.

eijirou is an idiot. a giant stupid idiot who knows exactly what’s going to happen if he does this, but he can’t just let bakugou hurt himself. he only hopes breaking a mating bond will hurt him less than if they just let his rut get worse.

eijirou unlocks his collar.

he knew it was going to happen, but he didn’t realize bakugou’s teeth would be in his neck within seconds. he feels like it’s worth it when he hears him growling in a way that’s nearly a purr, and he stops giving off such a hurt, distressed scent.

eijirou wishes he’d let go though, he wants to hug him or something, but he physically can’t move himself with an alpha actively claiming him.

he /really/ hates that fact when he realizes bakugou’s now giving off a scent of arousal, and he’s letting out an entirely different growl.

he didn’t take into account that being claimed by a prime might be more intense. he was expecting to be pliant, but he can’t even speak.

he tries whining to get his message across, that he wants bakugou to stop this, to let go, to stop pulling his sweatpants down, but he can’t even hear himself over the alpha’s growling.

plus, it’s pretty hard to convey that message when he doesn’t truly feel that way, and the way the teeth in his neck are bringing out his omega doesn’t help.

he wants this, he really fucking wants this, but logically, he knows he doesn’t want it in this situation. he doesn’t want to lose his virginity to the guy he likes when bakugou is barely even mentally present.

he doesn’t want his first time to be something his partner is going to regret, and he feels tears prick his eyes at the conflicting emotions. but he truly wants him, and logic is becoming more irrelevant by the second.

he whimpers when he feels the head of bakugou’s dick starting to push into his, now very exposed, slit, and he doesn’t know if it’s a good or bad whimper. he wants this, and he reminds himself there’s nothing he can do at this point.

it’s his fault that it’s even happening in the first place, and bakugou has every right to hate him after this, but stressing now won’t help either of them. if anything, he needs to relax. he doesn’t want to tense up and make it hurt when bakugou pushes in.

fuck, is this going to hurt? he’s never put anything bigger than his fingers inside himself, and he knows from their dry humping earlier that bakugou is /very/ well endowed..

nope! he’s not going to think about that, he’s just gonna focus on the fact that he’s losing his virginity to the right person, and this will definitely help bakugou get out of his dark rut.

he does wish he could kiss him right now though, that might’ve been able to calm his nerves. he whines loudly when he feels bakugou push inside, hard.

he was right, it hurts, but holy shit does it feel good. he obviously knows he has a hole there, but he’s never considered how nice it would feel to be filled.

bakugou thrusts hard and sharp from the beginning, and it punches little “ah”s from eijirou every time. he’s so far past being able to worry about what will happen after this, all he can think about is the way it feels to be fucked with an alpha’s teeth in his neck, his alpha’s.

oh yeah, that sounds really good in his head, bakugou is his alpha. if it was possible for him to get any more wet, that definitely just happened.

he thinks his eyes might actually be rolling back in his head. he’s heard that most people can’t come from penetration alone, but he does not think he is one of those people.

he’s never felt like he’s about to come for such an extended period of time before, and he /knows/ that shit is gonna be intense. he doesn’t want this to end, ever, and he’s starting to wonder if he’ll actually get that wish, bakugou has the stamina of a racehorse.

it must be tiring to be thrusting his hips so hard from this angle, but if it is, he’s not showing it. in fact, he might actually be getting faster.

he hasn’t let up on his bite, but his hands are roaming in the way his mouth can’t. it feels like they’re everywhere, like he can’t get enough of touching him, and eijirou’s never felt so attractive, so /wanted/.

his omega is definitely on the same page. an alpha /prime/ is mating with him right now, touching him like he’s worth wanting, like he’s good enough. it feels amazing.

he doesn’t know how he’s managed to get his voice back, but he’s incapable of forming real words, and every noise he makes is involuntary, so maybe it’s that.

he’s briefly insecure about the way he sounds, but he gets distracted quickly when bakugou changes angles.

being actually fucked feels so different from just touching his dick or his clit, it somehow feels simultaneously more muted and more intense. like he has a wider internal clit and bakugou’s cock is repeatedly slamming into it.

he whimpers and squirms to the best of his ability when his alpha’s hand ventures lower on his front. he’s not gonna last long, but bakugou hasn’t slowed down a bit.

if eijirou thought he was getting close before, it was nothing compared to when bakugou wraps a few fingers around his dick and starts pumping it.

he never expected to be turned on by how small his cock is, but the fact bakugou can nearly cover the whole thing with only three fingers, is really fucking hot.

a few more jabs to that special spot inside him has eijirou coming hard with a scream. a fucking /scream/.

his whole body goes numb for a few seconds, and when it comes back online, he realizes bakugou’s knot is inside him now, but he’s still rolling his hips deeper.

he looks down at the slight bulge of his stomach and feels simultaneously content and scared, but the fear stays at the very back of his mind, and he moans loudly when he feels bakugou shudder and come with his tip pressed snug against eijirou’s cervix.

he feels so warm, and so tired. tired enough that when bakugou finally lets go of his neck, and starts giving kitten licks on the bite, eijirou doesn’t even bother to take advantage of the fact he can move again. so tired...

katsuki curls both of his arms around eijirou and pulls him tightly to his chest. he doesn’t even care that one arm is falling asleep, he needs to keep his omega as close as physically possible.

they’re freshly mated, knotted, naked enough that if someone walked in right now they would get their eyes clawed out for looking at eijirou’s crotch, and eijirou is sleeping. he’s in a very vulnerable state right now, katsuki must protect.

he briefly lets go with one arm so he can grab one of the blankets and pull it over them, and eijirou makes a small whine in his sleep at the loss of contact. he’s so cute. perfect omega, katsuki’s omega.

he can’t fall asleep, in case any trouble arises while eijirou naps, but katsuki’s perfectly content just laying here and holding him.