paring: alpha atsumu x fem beta reader
warnings: bullying, dub-con, atsumu is not nice, smut, slight breeding kink, biting, blood, choking, mirror sex, possessiveness, jealousy, alpha rut, atsumu talks shit, dramatic atsumu
english is not my first language. please excuse any mistakes
Born as a beta, you never thought fate would toy with you by giving an alpha as your soulmate. Especially not one like Miya Atsumu, the one whom you went to school through college with and still having to see his face ever so frequently as if he had sworn to never let you live in peace.
For someone who made faces when seeing the lunchboxes your mom packed for you and proclaimed a beta was weak when you first presented at fifteen, Miya Atsumu couldn’t seem to detach himself from you.
So when you had a crush on one of your colleagues at twenty five, having his nose in your business as usual, Atsumu knew instantly.
“Another beta.” Lying comfortably on your couch, Atsumu scoffed. “Predictable.”
“Didn’t ask for your opinions.”
“I’m giving it anyway,” he said in a singsong voice, but his face was without mirth. “You can fuck whoever you want, but I’m getting my fix. That’s non-negotiable.”
He patted his lap. “Come here.”
Then it all began again. Him cradling you in his lap, hands going all over, lips spilling hateful words.
‘Weak fucking beta.’ He would say. ‘Even Osamu got an omega soulmate. Makes me jealous as fuck.’
But then he would kiss you like the world might end tomorrow, doing everything opposite of what he said. This time was no different. His hot tongue was everywhere he could reach, acquainted itself with yours before leaving a wet trail down your neck.
You protested when he nipped a little too hard, scared he might leave marks. He did that once. The deep purple hickey you saw in the mirror after he left your apartment scared the shit out of you. A little more force and teeth could have broken the skin, and that thought caused chills to run all over your body. You didn’t want to bear his marks.
Yet, Atsumu didn’t care. He never did. His hands were now on your buttocks, squeezing hard through your thin pajama bottoms. He moved you to one of his thighs for better concentration. The hands on your butt now rolled your hips back and forth, to the point your moan finally slipped out of your tightly zipped lips and you forgot about the harsh nibbling on your neck.
“Go whore yourself out,” Atsumu whispered. “Like I fucking care.”
You thought, didn’t say out loud.
Touching each other lifted the heavy weight in the heart caused by the act of not accepting the soulmate bond. Nothing more, nothing less. If not for this calling of intimacy both of you obliged to feel, he wouldn’t be here. You knew that. He said it way too many times.
Still, your cheeks were licked, your lips were tasted, neck wet with saliva. You felt like a prey about to be eaten every time he was close. Yes, he may not care. But he sure was possessive enough of things that were given to him.
Whenever you tried to wiggle out of his firm grasp, he tightened his fist. This time was the hardest you ever felt.
In more than twenty years of knowing each other, never once did Atsumu come to you when he had gone into rut. So when he called you two in the morning one week after his last fix, ordered you to pack a bag and tell your boss you would be on leave for a week, you were baffled. It was never more than kisses and touches with him. Your clothes were always intact and on. The idea of that being changed had you flat out saying no.
That didn’t stop Atsumu from coming to get you one hour later though. When he saw that you did nothing to get ready, his jaw was clenched. A split second later, he packed your bag himself, shoving clothes and toiletries in without any care. You were still in pajamas when the passenger door was slammed closed and he hit the gas.
There were reasons why betas are not for alphas. Physically, they were incompatible. Betas weren’t designed for alpha’s stamina, not to mention one in rut. At one point, you did not care to count anymore how many times you had blacked out. Fading in and out really fucked with your memory. All you remembered was the non-stop pounding, Atsumu’s breath against your face, and his uncharacteristic cooing, praising you as his good girl.
“Knew you were built for me.” The blond menace pulled on both of your wrists, never stopped his thrusting. “Let me knot you again, okay?” When you shook your head, face wet with tears, Atsumu shushed you softly. “Shhhhh. You can do it, I know you can.”
And you could. But it was not without pain.
“Shouldn’t have waited this long,” Atsumu said close to your lips. “You almost got away.”
He talked too much. But it would have been a big fat lie to deny that his words didn’t turn you on. That his vile confession didn’t affect you.
“Bold of you to even think I would let someone else touch you.” He sounded out of breath, closing to his end. “All the effort goes to waste. No no no no.”
You felt it coming, just seconds before. Then your whole body was taken by the waves of thrills and your whole vision turned white. Atsumu was not your first, but as if he was the harbinger of agony, it hurt when he first penetrated, hurt when he knotted. And when you felt a sharp sting at your sensitive neck, you knew he defied the rule of nature once again by marking you.
Fruitless. That was what it would be. Betas were not made for alphas. Mating bites did not forge any bond with the wrong person and would fade over time. But Atsumu had always been stubborn. One bite turned into two, three, then countless. All you felt was pain and the wetness of blood before darkness took your consciousness like the many rounds before.
The mating bites faded within two weeks, all except the first mark, proving to you that even biology could not win over destiny. Same went with all other beta-alpha soulmate couples out there after you had done some research. They were rare, but they were there. You shouldn’t have let Atsumu bite you. Should have known better that things could get weird when it came to soulmates. Now, he wouldn’t get off your ass, had the audacity to move his things to your apartment and yours to his, calling you his girlfriend in front of everyone and expecting to see you at his games.
You didn’t even like volleyball to begin with. And as you watched his magnificent tosses to any players he deemed to have high chances to score, you thought of a way to get out of his clutch.
He needed an omega, the correct designation he always longed for. Because even with all the protective caresses and the promise to never let you go, Atsumu was still mean. Like going back to the ninth grade when you put makeup on for the first time and he gave you the nastiest comment that made you go wash everything off in the school toilet, his words still stung badly when he chose to weaponize them.
‘Samu’s mate smells like she needs to be bred.’ He said that nonchalantly one day at Onigiri Miya, sitting side by side with you at the counter where his twin and his mate helped each other with cooking and serving the hungry athletes who were there to celebrate the day’s victory ‘Don’t know how he stands that. So sweet’
Hearing that made your conversation with Hinata pause. His steely gaze was the first thing you saw when turning to face ‘your boyfriend’.
It didn’t end there. For days Atsumu was in a devilish mood, his jabs that you knew most of them were meant to just rile you up for fun had become a real emotional harm. He still fucked you, make no mistake about that. And it was as devilish as his temper.
‘Too hard, Miya. Too hard.’ You still wouldn’t call him by his first name.
Veiny hands wrapped snugly around your neck, Atsumu only went faster after hearing that. The bathroom mirror was foggy with hot steam from the shower, but you could see enough. One of your legs was perched on the counter, allowing the view of his cock pistoning in and out of you, your breasts bouncing fast.
‘Would have been pregnant already if you were an omega.’ The sentence came out coated with his accent, thicker than normal, like he didn’t have full control of how he spoke. ‘But that’s alright. I can take my time with you. We’ll get there,’ he purred. ‘Still, what a shame, huh?’
Shame his ass for saying that and not letting you leave. ‘Go fuck an omega then.’
He smirked. Pissed you off. ‘Nah.’
As his toss to Sakusa scored a winning point, the loud cheer brought you back to the present. You saw Atsumu eyes staring up at you from the court below and knew what you had to do.
Getting an omega who wanted to spend a heat with Miya Atsumu was easy enough. Sending her up to your apartment where he was already there waiting for you was as simple. You drove away then, not far, stopping at your favorite 24-hour cafe because you needed somewhere to sit and waited for the first feedback from the omega girl. Half an hour later, you got a call.
The screen showed the female omega’s name. You picked up and said hello, expecting to hear that everything went well and that you could go find somewhere else to sleep for the next five nights.
But you only heard cries. Not of pleasure, just a full-blown crying with hiccups.
“Hey, are you okay?” you asked, frowning. “Talk to me. What happened?”
“He—he screamed—at me,” she spluttered, almost incoherently, “and only asked where you were.”
You cursed quietly, finally able to stop stirring the poor coffee you ordered without any interest in taking a sip. “Where is he now?”
“I don’t know,” she cried. “He left—after the screaming.” Her voice wavered all the more when she kept on trying to speak. “You had to see him. He looked murderous. There was not even a hello. He straight up shouted at me, accusing me of breaking in. When I tried to explain—mentioned you, his face was all red.” A hiccup interrupted the long babbling. “He said he was married to you and showed me the ring.”
You were not sure what crack Atsumu was on, but there was definitely no ring or marriage.
The call was still on when you heard the cafe’s door pushed open. And it was as if you saw the devil with your own naked eyes.
His strides declared no peace or mercy when he saw you, ignoring the greetings from the two night shift baristas.
Not wanting to cause a scene, you stood up, didn’t say anything when he put his hand on your shoulder and led the way out.
The drive was silent. Your car was left at the parking lot near the cafe, you would have to come and get it as soon as you could before the parking fee turned as murderous as him. When asked where he was going, he answered solemnly, “My place. Yours stinks.”
You just knew it was going to be a long night.
Atsumu was the one who got the car out for you the next morning since he was the one who could still walk without wobbling. The sheets you slept on were rumpled. They reeked of cum.
‘You think you’re so funny?’ he asked, knowing you couldn’t answer with his cock occupying your mouth but did it nonetheless ‘You wanted me to fuck her? What was going on in that pretty little head?’
He pulled you by the nape of your neck before pushing your head down, forcing your throat to take more of him till you felt the urge to gag.
‘I thought we had an understanding, baby,’ he said, finally relenting his grip on your head. ‘No whoring yourself out.’ Then he stressed, ‘And no whoring me out. I’m yours.’
‘Atsumu,’ he said, looking like he wanted to throw up. ‘You’re not fucking my brother. Don’t make me imagine that. Call me Atsumu.’
Looked like you delivered. Atsumu grinned from ear to ear. ‘Good girl. My best girl.’
A warm kiss to the cheek woke you again, must have dozed off after Atsumu left, but those scenes were not a dream. You heard him whisper,
“I got your car. Parked it at your place.”
He looked like he got a ten-hour sleep while you could not move a limb without feeling sore. Not fair. And the way he looked so good in sheep’s clothing, his wolf’s skin all hidden. Not fair at all.
“Shower.” Your voice was hoarse, but you got the message through. That was good enough.
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