Actions

Work Header

Rating:
Archive Warning:
Category:
Fandom:
Relationship:
Characters:
Additional Tags:
Language:
English
Series:
Part 1 of Omega Dazai being a little petty shit
Stats:
Published:
2026-07-21
Words:
2,689
Chapters:
1/1
Comments:
1
Kudos:
85
Bookmarks:
7
Hits:
883

Abhorrence

Summary:

Dazai was currently in heat. One of the side effects of being an omega, and god did he hate it. Dazai already hated being an omega due to the expections and view of omegas. They were supposed to be submissive subservient little things that do nothing but to please their alpha. It pissed them off to no end.

 

The thing is, Dazai wasn’t even truly an omega. Like, he is an omega but, their instincts are messed up. Instead of the instinct for a knot and a alpha to please and submit to, he has the instinct of wanting an alpha to break down and watch them cry and beg and plead as they submit fully to him. He’s always had the instinct to dominate over submit.

 

His scent wasn’t even omega like. Omega’s scents were sweet, usually candy and just overall sweeter and flowery scents. Dazai’s was crisp and musky, more a like betas than an omegas. His scent was pine, chocolate and coffee. All scents omegas never have. The only time their scent got even slightly sweet was his heat. Like right now.

Or, Omega Dazai has his heat hit and Alpha Chuuya tries to help him. Dazai is not pleased.

Notes:

I desperately want to write/read petty Omega Dazai being a little shit and hating on Alphas but don’t feel like working on my Omegaverse MHA x BSD crossover fic so I am now writing this..

(See the end of the work for more notes.)

Work Text:

Dazai looked up at the ceiling of his shipping container as he curled up into a ball on their side in his bed. There were remnants of a nest, but Dazai had gotten annoyed when making it as it didn’t feel complete so they just ripped it up and went back to curling under his blankets.

 

Dazai was currently in heat. One of the side effects of being an omega, and god did he hate it. Dazai already hated being an omega due to the expections and view of omegas. They were supposed to be submissive subservient little things that do nothing but to please their alpha. It pissed them off to no end.

 

They knew that his reputation as the Demon Prodigy would take a heavy hit if anyone found out, it could be repaired but never to the same level as before. Thus, they covered their scent completely and played off as a beta.

 

The thing is, Dazai wasn’t even truly an omega. Like, he is an omega but, their instincts are messed up. Instead of the instinct for a knot and a alpha to please and submit to, he has the instinct of wanting an alpha to break down and watch them cry and beg and plead as they submit fully to him. He’s always had the instinct to dominate over submit.

 

His scent wasn’t even omega like. Omega’s scents were sweet, usually candy and just overall sweeter and flowery scents. Dazai’s was crisp and musky, more a like betas than an omegas. His scent was pine, chocolate and coffee. All scents omegas never have. The only time their scent got even slightly sweet was his heat. Like right now.

 

Dazai was a defective omega through and through. To be honest, they didn’t mind at all. They never want to be submissive or crave for an alpha. He likes his urges and instincts. Alphas were horrible. He hates them. They’re all the same, flaunting their scent everywhere and thinking they’re the best and on top of the world. He hates alphas.

 

Therefore, imagine his annoyance when their ripped from his thoughts by their phone ringing. He assumed it’s Mori, the older omega was always checking in on them during his heats and making sure he didn’t need anything and that they were taking care of themselves. It was quite annoying.

 

He grabbed his phone to see the caller, an annoyed rant of how Mori is being a rat and should die a horrible painful death on their tongue when they pause. It wasn’t Mori calling him. It was Chuuya.

 

He felt his annoyance spike into hatred at the caller. They pressed the decline button, the last thing he wanted was an alpha poking around and annoying them during his heat. Where he’s vulnerable and can barely stand with the heat and slick soaking him. Where they could so easily be pinned down and bitten, everything against his instincts and wants.

 

They were graced with the blissful silence once again before it was broken another time by the loud blaring of his phone. They let out a growl of annoyance, their heats always made him vocalize more.

 

They grabbed his phone and pressed the accept button, annoyed and wanting the young alpha to shut up.

 

”Oi! Bastard where are you?! We have a mission!” The loud blaring voice of the short ginger alpha invaded their ears, making them wince with their sensitivity to noises increased with his heat.

 

”…Are you injured? I heard you wince and you only do that when your hurt,” Chuuya’s voice dropped the annoyance, worry lacing it now. Dazai felt himself scoff, why would Chuuya care about them? Alphas don’t care.

 

”No. Now leave me alone Chibi,” Dazai snapped, wanting to end this call and be back to laying in the nice silence and dark of his shipping container. Their heats already annoyed him because they messed up his routine, he didn’t need the alpha also ruining his life more by poking and prodding at them when he’s in heat.

 

”Like hell I believe that, I’m coming over,” Chuuya growled before ending the call, leaving Dazai staring in silence as he regretted all their life choices. If only his gun or knife was in reach right now, he wanted to kill himself more then anything right now.

 

Dazai sighed, of course now he has to deal with an annoying alpha when their more emotional and quick to anger in heats combined with being weak and vulnerable, it’s the last thing he wanted. They knew the alpha would check his own apartment, then his suicide spots, then their favorite spots, then finally ask Kouyou who wouldn’t know, before finally giving in and asking Mori who would ever pull through and not tell Chuuya or be an annoying piece of shit and tell Chuuya where he was. Mori knew he was in heat, he would ever think Dazai should have someone to take care of them or know Dazai hates alphas and ever warn Chuuya or just simply say no.

 

He rolled his eyes, god they were not looking forward to it if Chuuya finds him.

 

‿̩͙⊱༒︎༻♱༺༒︎⊰‿̩͙


After a hour of sitting in silence, hoping against hope Chuuya wouldn’t find him, he heard heavy footsteps outside before their shipping containers door was ripped open, revealing the short ginger alpha.

 

Dazai lifted their head and glared at Chuuya, a low reverberating in his throat, something they often didn’t do.

 

”Ok where are you injured you- …are you growling..?” Chuuya stepped inside, walking closer before pausing at the sound he heard the younger making.

 

”..Go away Chibi. I’m not injured,” they hissed at him, flopping his head back down on the pillow.

 

Chuuya paused, staring at them as he finally seemed to process Dazai’s scent was very much sweeter than usual, the tell tale sigh of a heat. Chuuya knew Dazai was an omega, it was important for them as partners so Chuuya knew the urgency in certain circumstances, “…Are you in heat?”

 

Dazai sighed, annoyance filling him and the growling resumed, “Yes. Now go away,” they huffed as he gazed at the wall.

 

”…You shouldn’t be having your heat in this place. Come, let’s go to my apartment,” Chuuya said after a moment of silence and stepping forwards towards Dazai with the intent to drag him out.

 

Dazai glare sharpened onto Chuuya and his growl got stronger, “No. Get out,” he narrowed their eyes more.

 

”Dazai, you shouldn’t be having a heat in a shipping container with no way of regulating temperature in here!” Chuuya exclaimed, worry in his tone as he stepped to pick them up, closer to his bed.

 

Dazai hissed and slashed at Chuuya’s arm, their nails were always so sharp that they were basically claws so it hurt quite a bit, “Get away from me,” he growled, their instincts telling him to protect himself and the bed. Instincts must be treating their bed as a nest because he has none.

 

”What the hell Dazai!” Chuuya growled in annoyance, clutching his arm. They hadn’t broke skin but it had gotten very close it. Chuuya sighed before he grabbed Dazai and picked him up.

 

Dazai let out a hiss in annoyance and thrashed in his hold, trying to get out. Sadly, Dazai’s malnourished, not nearly as strong as Chuuya, and significantly weaker due to their heat so it was just akin to a cat with no claws squirming around.

 

”Stop thrashing you idiot,” Chuuya hissed as he managed to hold onto Dazai despite them being very slippery. Dazai might’ve been able to slip out of his grasp had they not been in heat with his limbs feeling like jelly.

 

”Let me go!” Dazai snapped, god he was murdering Mori the next time he sees that old man! They hated alphas and now he was being dragged away from their safe place to the alphas apartment! He hissed again, still trying to escape but it was in vain as Chuuya simply started walking out.

 

After the long journey to Chuuya’s apartment which involved a lot of hissing and thrashing from Dazai, they made it to his apartment. Chuuya unlocked the door and stepped inside, closing it behind him as he brought Dazai to his bedroom and dumped him on the bed.

 

”Make a nest, don’t omegas need those?” Chuuya’s question was more  as a rhetorical question as he grabbed the extra bedding material out.

 

”I don’t want one!” Dazai hissed, curling up into a ball on the bed, disgruntled by the fact he was out of their safe place and now in Chuuya’s bed that reeks of him.

 

”Make one. Omegas need a nest Dazai,” Chuuya dropped the bedding material on the bed and left the room to grab water and food.

 

Dazai huffed, glaring at the bedding material. He sat up, intrigued by it because it wasn’t as terrible as they thought. There was quite a lot of fluffy blankets which was his favorite type. He grabbed them and started making a nest, following his instincts for what they liked.

 

Unlike the other nests he made, this one actually felt complete when they finished. He let out a satisfied purr and kneaded at the nest a bit as he made themself comfortable in the plush nest, instincts happy and content as he curled up under the fluffy blankets.

 

He was rudely distracted from his content feelings by Chuuya re-entering the room, setting down food and water on the nightstand before turning off the light. Good, at least he knew light was a terrible annoying thing in heats.

 

”Good, you actually made a nest,” Chuuya said as he sat on the bed, “So uh… don’t omegas need an alpha during their heats? Like.. knots and stuff?” Chuuya said while looking away.

 

Dazai growled, lip upturning in disgust at what Chuuya just said, “I don’t need an alpha or a knot! Didn’t Mori tell you anything? My instincts are messed up, I don’t have the craving for an alpha or knot or to submit and please one. Instead I have the instincts to dominate them and break them down and watch them cry and beg, so unless you want to do that, leave me alone,” he hissed, disgust and hatred lacing their tone.

 

Chuuya stared at them blinking for a few moments, “..But like… can’t I help with scenting or something? I want to help you,” his worry filled tone invaded Dazai’s ears and they let out a hiss of annoyance.

 

”You already dragged me away from my safe place, the least you could do is leave me alone,” he grumbled, curling up into a tighter ball at the cramps hitting him.

 

Chuuya sat in silence for a moment again before he crawled closer to the nest, putting one hand on the edge before Dazai hissed and glared at him, “Out.” They growled lowly and Chuuya withdrawaled his hand.

 

”God, alphas. I swear you know nothing about omegas! Don’t you know you don’t go into a nest uninvited!” Dazai threw up his arms before regretting it as it aggravated their cramps and quickly curling back up.

 

”Sorry. I just, want to help Dazai. I care for you,” Chuuya muttered, as he drew his hands close to his chest and looked away, a faint blush covering his cheeks.

 

Dazai blinked, staring at Chuuya in mute shock. Worry? Care? Why would Chuuya care for them… why? Why him? Alphas don’t care, so how come he doesn’t sense a lie from Chuuya? He couldn’t fathom the fact Chuuya, an alpha, cares for their wellbeing.

 

”…What..?” He finally managed to get some words out, blinking slowly at Chuuya, all anger or annoyance gone as they stared in shock at the shorter.

 

”I.. care for you. I want to help, so what can I do?” Chuuya managed the courage to look at Dazai in the eyes.

 

”I… fine… you can get in my nest…” Dazai muttered before curling up into a ball again as the cramps worsened.

 

Chuuya crawled into the nest, curling under the blankets before hesitantly reaching out and pulling Dazai into a hug.

 

Dazai’s shock went up even more with that, Chuuya was… hugging… him..? He’s… he’s never been hugged before. They didn’t know if he hated it or loved it, they laid limp in the hug, not knowing what to do or where to put his hands.

 

Chuuya nuzzled at Dazai’s scent glands, trying to reassure the omega as he pulled them closer to cuddle.

 

Dazai relaxed his tensed muscles at the nuzzling, letting himself lower his guard and relax in Chuuya’s hold. They didn’t like alphas… but maybe for once he could allow this. He enjoyed the warmth of Chuuya’s hold and the nuzzling, for once not hating the alphas presence.

 

And if he started purring, no one needed to know.

 

‿̩͙⊱༒︎༻♱༺༒︎⊰‿̩͙

 

Dazai woke up to a heavy warmth. They didn’t know he fell asleep, but at least the cramps weren’t as bad due to the rest.

 

He lifted his head from where it was rested to see Chuuya cuddling him. They blinked, oh right. That happened. He wanted to push the alpha away, they wanted to let out a growl or hiss and show they didn’t like him, but he couldn’t bring himself to do it.

 

It was probably just because he liked the warmth. Yeah, that’s probably why.

 

They looked around the dark room, once again grateful Chuuya had the insight to turn the lights off.

 

He saw some water on the nightstand and he stretched over to grab it, he was quite thirsty. Heats always made him so dehydrated. Probably one of the main reasons Mori checks on him so much during his heats. He drank some water, making sure to put the bottle back on the nightstand properly when they finished.

 

Speaking of Mori, he is going to kill the fucker the next time they see him. That old man so told Chuuya where they lived. He grumbled at the thought, already thinking of pranks to make Mori’s life a living hell.

 

They smirked, glitter bombs and hair removal. Perfect. Maybe he could even destroy all of Mori’s clothes and spend the majority of his money, Mori was to soft on him. He could always easily get out of trouble but just playing the card of “but I’m your pup” and the boss instantly melts. Mori always loved to hear Dazai refer to themselves as Mori’s pup as Dazai denied it so much.

 

Now with his revenge carefully thought out, they reached for his phone he had the insight to manage to somehow grab when the annoying Chibi kidnapped him.

 

He opened his text messages to see some from Mori, they huffed but opened it to see what the doctor had to say for himself.

 

Old dusty crusty ugly man: Osamu please don’t mad. Please I’m begging on my knees don’t be mad at me

Old dusty crusty ugly man: You just need someone to help you during your heats! I did warn him but don’t be mad at me 😭🙏

Old dusty crusty ugly man: I’ll buy you anything, no paperwork for a week! Just don’t get mad.

You: Count. Your. Days. Old. Man.

Old dusty crusty ugly man: NOO I’M SORRY OSAMU PLEASE PLEASE PLEASE IM SO SORRY

You: Sorry doesn’t cut it old man.

Old dusty crusty ugly man: OSAMU PLEASE- PLEASE OSAMU

Old dusty crusty ugly man: OSAMU-

Old dusty crusty ugly man: NOOOOOOOOOOO

 

Dazai huffed as he left the old man to plead and beg. They weren’t forgiving and forgetting, Mori was going to suffer and Dazai would make sure of it.

 

He settled in to playing some game on his phone, the Chibi still asleep.

 

This was nice. He could do this. They could ignore it later, but for once he didn’t feel hatred for the alpha. Didn’t feel the annoyance. It was just nice and warm, maybe they might come back to the smaller for their future heats.

 

And if they started purring again, no one but them would know.

Notes:

You should read my Omegaverse MHA x BSD fanfic if you want more of this au

Series this work belongs to: