Work Text:
Back when both Dazai and Chuuya were fifteen, everyone in the mafia was surprised to find out Chuuya actually presented as an alpha.
Sure enough, Chuuya is strong, he's an executive after all,but since the very day Dazai had laid eyes on him he was sure the shorter boy was meant to be an omega.
His omega to be specific.
He had the looks,too — petite frame, long,soft hair that shaped his round face,pale as snow. His eyes,even though sharp and serious most of the time were exactly like a doe's,the beautiful blue looked too welcoming,too pretty to belong to an alpha's.
Dazai himself wasn't able to believe that Chuuya truly is an alpha until he saw the older in rut right in front of his eyes.
He wasn't sure how he should have felt about it.
Happy? Angry? Relieved, perhaps? Since if Chuuya was an omega,he wouldn't be able to resist the shorter male much longer and just fucking stick his dick in him whenever he gets the chance to.
Not that it was a bad idea though.
If you ask Dazai,he would do that even if Chuuya's an alpha. The only thing stopping him from doing so is the redhead himself — So centered on the target when they were having a mission together, which was practically the only time they were able to interact.
The brunette didn't even had a chance to try ask him out.
That was how their life was — Being in the mafia meant that you're not allowed to bond yourself with others — Having to keep in mind that whoever you talked to, especially if you're in a higher position, would eventually be targeted by an enemy and die a tragic and painful death.
Would it be the same way with Chuuya,though?
No,it would not be that way.
After all, Dazai isn't going to allow something too bad to happen to him, right?
He trusted the boy to take care of himself.
He trusted himself to take care of the boy.
Right..?
Today was a particularly boring one — The only work that the brunette had to do was sign up some unimportant (in his opinion) paperwork that practically meant nothing to him, and sit till dawn in his dull office.
By 18:00pm he hasn't even finished a single document.
The only light was the one coming from the sunset slowly creeping though the large windows with a perfect view of the ocean — Dazai had insisted to not have any curtains on his windows.
Since the day he had his own office,he felt like he spend most of his time, excluding the time he spends on missions, there.
Not even in his apartment anymore — while he was glad he didn't had to live in a goddamn shipping container anymore,he never felt that place like something he could call his "home".
The only thing that place has been in use was when Dazai brings some cheap whores to fuck if he's desperate enough.
Another place he liked to spend time in, though was Chuuya's apartment — coming there to annoy and tease him or if he was lucky enough spend the night there.
Something flickered inside his brain.
He remembered how yesterday Chuuya had took the week off,due to his rut coming soon.
The mere though of Chuuya being all hot and sweaty in his bed made the younger alpha hard.
He always had wanted to claim Chuuya as his.
Him being an alpha too wouldn't stop him to do so either.
He's thought of bitching him before too, unfortunately for him he never got the chance.
Or when he did got the chance, he was too shy and still unsure of his feelings.
But when both of them had finally turned eighteen, after Odasaku's death,it was made clear that Chuuya was the only person left that the brunette cared and loved.
Chuuya was already bound to him.
Wether if he liked it or not.
Even if he didn't like it,Dazai will make him do so.
Slowly,he rised up from his desk, walking towards the office's thick dark wooden door and left the room.
His steps were uncharacteristically heavy and quick,but he didn't cared.
He had more important things to take care of.
And that's how he found himself in Chuuya's apartment, and in his room.
Watching over the smaller boy's sleeping body,eyes wide open like a hawk.
Sure enough the other has probably passed out due to exhaustion — He remembered how Chuuya refused to pay someone to spend his rut with him, talking about wanting to keep himself for his future mate or some shit that Dazai didn't give a fuck about.
The taller man slowly leaned down until his face was almost pressing against Chuuya's neck, sniffing at his scent glands.
The scent of arousal was still there,even though it was really faint.
Dazai couldn't even tell anymore if it was his or Chuuya's scent,long lost in his crisis of wether to mark Chuuya or not.
He had waited four years.
Four long, agonizing years of ignoring and belittling his feelings.
Four years of resisting the primal urge seethed deep inside his body and soul,that he made sure of resisting and sealing shut.
He wasn't perfect.
After all,Dazai is just a man, a really weak one at that.
But could you judge him? Who would be able to resist such a beauty, helpless and vulnerable right in front of their eyes.
He is just a human too.
And humans make mistakes, right?
One mistake wouldn't hurt.
"He'd get used to it." Dazai tried to reason with himself. It sounded more like him pitying himself for what's about to do.
Shaking his head in disappointment aimed at himself,in a quick motion he climbed into Chuuya's bed, feeling the soft mattress underneath himself.
With that,he carefully began removing his clothes, piece by piece until all of them were left in a pile on the floor.
Then he creeped closer to the other alpha's body, carefully sneaking one arm around his waist while he tugged Chuuya's shirt up by the other.
He tried so hard not to cum in his pants at the sight of Chuuya's perfectly shaped abs, resisting the urge to just bite and claw at his skin until it was all covered in bloody bites.
He carefully removed Chuuya's loose shorts and then underwear, tossing them somewhere across the room.
That was it.
The moment he had waited for since he laid his eyes on the soon-to-be omega,now laying all vulnerable in front of him.
He brought his fingers to his mouth, covering them in saliva and slowly pushed two fingers in, watching how the sleeping form in front of him gasped and whined, seemingly sensitive even in his sleep.
Thankfully the redhead was a deep sleeper.
Dazai was just having to pray he wouldn't wake up,no,not yet.
He resisted moaning at the feeling of Chuuya's insides squeezing around his fingers — Chuuya was really tight which meant Dazai will have to pay extra attention to stretch him out so when he was able to finally put his cock inside him it wouldn't hurt too much.
He continued pressing his fingers against his insides for a while, careful not to touch his g-spot to make Chuuya wake up.
It quickly became boring,so the younger alpha inserted another one of his fingers inside — The corner of his lips tugging up a little when Chuuya made a noise.
He thrusted the three of his fingers inside Chuuya, getting more and more inpatient by the second, until it eventually got boring too, and he just went in with shoving his entire fist inside Chuuya's small hole.
The sleeping male did make a louder sound this time and even shifted a little, Dazai was surprised he wasn't awake just yet.
It probably felt painful, too. If Chuuya was in a rut, then he would be over aware of different kind of sensations,such as this — Maybe he was on some sort of rut suppressants,or Chuuya was just that much of a deep sleeper, Dazai thought.
He thrusted his fist in and out of Chuuya, watching with glee how his hole was capable of taking his entire fist despite it probably never being used before, smirking whenever his movements were sudden and hard enough to make his fist visible on Chuuya's stomach.
The fact that Chuuya was probably a virgin too made Dazai feel special and maybe a little bit proud of himself.
He was able to catch Chuuya and claim him for himself before anyone else.
And soon, Chuuya was going to be his.
Dazai's omega.
After several more particularly hard thrusts of Dazai's fist, Chuuya's eyelashes began fluttering open,his vision still blurry and his brain still foggy.
The rut suppressant wasn't worn off just yet,so he didn't felt as aroused as before,but he was still able to feel his erection.
By the time Dazai finally pulled out his hand, Chuuya had finally snapped fully awake.
At first they just stared at eachother. Chuuya had his eyes wide open,the feeling of dread and arousal tugging at his nerves at the same time, meanwhile Dazai was just staring at him — kinda shaken off,but still not looking surprised. Like he expected it.
In a fit of rage, Chuuya raised in a sitting position, glaring at the younger alpha.
After agonizingly long minute of something akin to staring contest, Chuuya finally got the guts to talk. "Dazai,what the fuck are you doing here?"
His tone of voice was more surprised and questioning than angry,yet the brunette could feel how Chuuya's muscles tensed like he's about to snap his neck in two at any moment. Like a calm before the storm.
He fidgeted with his fingers.
"Chuuya, I...." He stopped himself from answering,since he quite literally didn't had a way of explaining it without making Chuuya murder him on the spot.
He wasn't ready to give up just yet.
He'd waited for too long.
"He'd thank me later." Dazai thought.
And with that,he came back to pinning the other's body down with his weight.
He positioned himself between Chuuya's spread thighs, pushing his cock in, watching as Chuuya gasped in shock and pain.
The expression of fear and pain in Chuuya's gaze almost made him feel sorry.
Almost.
He felt disgusting — Disgusted with himself, and what he was going to do to Chuuya for his own sick desires, cursing his mind for still trying to find excuses and reason with himself that the thing he was doing was good for both of them,not just act of egoism from his side.
Dazai left a groan of his own when he felt Chuuya's warmth around his cock and his insides squeezing him in.
With that,he began thrusting unapologetically, each thrust sending Chuuya into pathetic fit of sobs and babbles.
Grabbing the other's red locks of hair and tugging his body up,he positioned his tip just right and pressed in, hitting right at Chuuya's prostate, making the other cum all over both of them and collapsing down on the bed.
Then Dazai leaned down and pressed his nose right at Chuuya's scent glands.
Memorising the currently sour and sharp scent that soon would turn sweet like honey.
And with that,he bit down at Chuuya's pale throat, permanently marking the skin that was now bleeding and dirtying the while bedsheets underneath them.
That was it.
Chuuya was going to be his omega.
And sure enough,the first signs were present a few days after.
Usually Chuuya's ruts lasted around four days — this time they reached seven days.
His scent began to change too — morphing into a sweeter and more persistent one.
Even though he was still too mad to talk to Dazai or even look him in the eyes,he could feel it.
He could feel it in the way Chuuya's hole was getting more and more loose with each passing day.
Chuuya was already his.
He truly was his omega.
And Dazai planned it on staying that way , until the day both of them die.