[3:00 PM] Miya Atsumu - A/B/O
All I can tell you all is that it's long and dirty... hope you have a wonderful smutty Friday.
Warning: Full of smutty smut... A little different from most A/B/O au
.
Atsumu returned home early from a four-week-long training camp.
He first noticed the unfamiliar pheromone in his shared apartment with Y/n.
Immediately his ears perked, and he could hear moaning and whimpering coming from down the hall.
Sighing, Atsumu contemplated going to Osamu’s place for the night. Now that he recalled, Y/n did remind him that she was going through her rut cycle soon. Normally, they respected each other’s boundaries and spent their ruts at the specialty hotel that was designated for ruts & heats. She had asked if he would be okay if she brought her partner to spend the night at their apartment since he would be out during that time, and he was okay with it.
Before Atsumu could put his shoes back on, he heard a door swing open.
“This is fucken pathetic, screw you!”
Atsumu froze and before he could hide, a half-naked omega stalked past him before stopping to glare at him. “Your roommate is a pathetic alpha!” She shouted before slamming the door after her.
Blinking, Atsumu was shocked at what had just happened.
“She’s just mad I lost my vibe. I didn’t know you were coming home early.”
Turning his head, Atsumu sees Y/n standing only in her robe, leaning against the wall. He could see red blotches along her neck.
He took a step closer to Y/n. “You okay?”
She shrugged and smiled, “don’t worry about it.” She walked over and dropped herself on the couch.
How could he not worry? Atsumu inhaled softly before sitting beside her. He noticed the oddness he had been feeling the last couple of days and couldn’t pinpoint what it was.
He glanced over at Y/n who had her arms crossed over her chest with her eyes closed, almost like she was sleeping.
Y/n was one of the few female hybrids, a special case of an alpha and omega. Hybrids were able to choose between either gender and could breed and be bred.
The setback for most hybrids was that they have a smaller physique than an average omega and due to that, oftentimes time they were looked down on as alpha hybrids. Like both genders, hybrids go through both rut and heat phases and sometimes both could happen at the same time. Hybrids were able to release alpha and omega pheromones yet unable to detect them like betas. They often have to carry with them a pheromone neutralizer to prevent unwanted attention.
Eventually, most hybrids will adopt the more dominant gender. The high percentage of hybrids become omegas due to the challenges of being an alpha.
But Y/n had no problem attracting both alphas and omegas.
Atsumu himself was physically and sexually attracted to her until he discovered that her preference was omegas.
He would take it to his grave that he had imagined how it would be to have Y/n below him, how she would take him…
But they were friends, roommates for three years.
However, things changed two weeks ago when the two of them were casually having a beer in their living room after a long work day.
“Hey,” Atsumu started, staring at Y/n sip on her fourth beer. She was one of the few ladies he knew who enjoyed a good beer and a lot of it. “Wanna play Truth or Dare?”
He could see she was thinking about it before she smirked and answered, “sure.”
Being the gentleman he is, he allowed her to go first.
“Truth or dare, ‘Tsumu?”
He felt a sense of nervousness for some reason and decided to play it safe and chose truth.
“Why are you so uptight?”
Atsumu frowned before letting out a laugh, that was her question? “Honestly, I haven’t had sex in three months. That’s the longest I’ve ever gone without sex since losing my virginity.”
Y/n’s face distorted humorously and she tried hard not to laugh, “okay, your turn.”
“Truth or dare, Y/n?”
“Truth,” she answered.
Atsumu smirked, wondering if she was playing it safe. “Which one do you like more, being top or bottom?” This was one question he had been dying to know the answer to.
Y/n consistently projected an aura of composure and ease, effortlessly connecting with everyone she encountered. It came as no shock that alphas and omegas alike gravitated toward her; there was an undeniable allure about her that drew them in.
She wasn’t surprised at his question at all. “My answer would be top because I’ve never been a bottom before.”
His eyes bulged out in disbelief. “I don’t believe you, you have never…” Atsumu’s voice trailed off as he tried to connect the dots in his head. “But you’re a… hybrid…” his tone was filled with nothing but confusion. “Don’t you get heats?”
Y/n shook her head, gulping her beer. “No, I have never gotten through a heat before. I know, it’s odd. My doctor doesn’t know why either and just continues to tell me to monitor myself.” She shrugs her shoulders, “so, I only know how to top.” She narrows her eyes at him playfully, asking him that nearly makes him choke on his saliva. “Why? You want to do you want to show me how it feels to be a bottom?”
The fun and playful mood Atsumu was in suddenly turned him sober and serious. Was she joking? He swallowed, trying hard not to make it obvious that his cock had gotten excited and was semi-hard.
Their game of Truth or Dare came to an abrupt end before neither had a second round as the fire alarms in their apartment complex went off.
Neither spoke again about that subject and went on with their lives.
Or at least Atsumu tried to.
For days, he couldn’t get the subject out of his head, wondering and questioning how she had managed to go this long without having a heat, let alone that she had never been a bottom before! It had also bothered Atsumu about her question she asked him if he would like to show her, was she serious about it? It made Atsumu excited every time he thought about it.
Atsumu has been wanting to bring the conversation up again and suddenly had the urge to do so.
His mouth opened to speak when something hit his sense of smell, a delicate aroma. Blood began rushing down south and his mouth watered, his mind clouded with nothing but wanting to have a taste of this deliciousness that was taking over his senses.
Realization hit him as this was typically how he becomes when he is being affected by an omega’s heat pheromone.
His eyes narrowed as he looked at Y/n.
“Atsumu.”
He flinched at the way she called his name, not in a threatening way, but in a way that made him want to be nothing but possessive of her. His throat tightened as her pheromone poured more onto him.
“I… think I’m going through my first heat,” Y/n murmurs softly, opening her eyes to peer into his. They were a different color and most definitely very dilated.
He noticed her crossed arms tightening around her petite body. Realization hit him, the faint lingering smell he had detected was Y/n’s omega pheromone, something completely different from her alpha pheromone he was used to. It was no wonder he was not threatened by it because it still had a bit of her scent in it, keeping him calm.
“What?” he growled, trying to maintain his composure and sanity, he wanted to pounce on her. Atsumu stood up and distanced himself from her. “But you said you –“
“I never had one before so I don’t know what to expect but I’m confident… enough that what I’m experiencing right now is my heat.” Y/n hunched over, her shoulders trembling.
The silence in the room was unbearable and she broke it by quietly asking, “would you – be comfortable to help me?” She bit her lower lip before asking, “I’ve – I’ve never been a bottom… show me. Show me what it's like to be a bottom, Atsumu.”
Atsumu’s eyes bulged out, “sh – show you?” He inhaled sharply as he closed his eyes to absorb her request. He paced back and forth in their living room before clarifying, “say that one more time? What are you asking me to do?” He needed a second confirmation.
“Atsumu,” Y/n called his name, it flowed like soft butter from the tip of her tongue. “I’m in heat right now and I want you to show me what it feels like to be a bottom…” she paused, “if that makes you feel uncomfortable I can go ask –“ She was suddenly tugged onto her feet and pressed against his chest. She felt his hardness press against her abdomen and her eyes widened, breath hitching.
“All you need is me,” Atsumu’s eyes suddenly become dark as he stares at her lips. “I will show you how to be a bottom, Y/n.”
.
“You’re breaking my heart here, Y/n,” Atsumu growled softly against her nipple. Three of his long and thick fingers have been thrust back and forth inside her pussy. “Am I doing a shit job that I can’t even make you moan for me?”
Y/n shook her head, her knuckles had turned white from gripping his comforters tightly. She let out a heavy breath, “no – no… it feels…”
“Feels?...”
“Fucken amazing…” she finished, opening her eyes. “I’ve… never felt this bliss before…” her back arched when Atsumu’s fingers curled and fastened.
“Nope,” Atsumu chuckled when she tried to close her legs. “Keep these beautiful legs open, wide open for me.” He shifts his large, toned body to fit in between her legs. He withdrew his fingers to stroke his cock.
Atsumu still couldn’t believe that Y/n has never had a heat before, let alone taken a cock before.
“’Tsumu,” Y/n whimpered, her fingers grazing over her wet pussy, her pussy ached to be stuffed, filled in ways she never imagined before.
Since finding out she is a hybrid at the age of 16, her gender has always been alpha-dominant. She has never experienced a heat since discovering her hybrid gender even though she was capable of adapting to both genders.
Unlike most, Y/n had no problem attracting either gender but she had preferred to be a top giver than a bottom receiver.
It wasn’t until recently, until the game of Truth or Dare with Atsumu that it had piqued her interest. She suddenly was curious about being a bottom but she did not know who she trusted enough to share that moment with. Unconsciously, she began manifesting it.
On numerous occasions, she caught herself staring at Atsumu, and it was then that she began seeing him in a different light. She considered the idea of asking him but was frequently reminded that it would alter their relationship forever.
Her request tonight was her heat speaking. During the few weeks of Atsumu being away, Y/n’s body began experiencing a change she had never felt before. Unlike the times she was going through a rut, her body was burning and throbbing at her pussy.
Y/n has never touched herself in such a way, never having to need to until now. For two nights in a row, she tossed and turned in bed until the temporary relief was her fingers dipping in between her legs and stuffing her pussy in ways she’s done to other omegas.
“Atsumu…” his name slipped from her lips unconsciously. Her eyes widened and embarrassment shamed her for calling out her friend’s name while imagining him, imagining it was his fingers stuffing her pussy.
And now three of his finger pump quickly in and out of her pussy, the mere thought of knowing it’s his fingers that is building up the pleasure is all Atsumu’s doing.
The following day, she snuck into his room and inhaled the scent in his room, filling her desire and yearning.
“Yes,” Y/n moaned, eyes rolling shut, “yes, Atsumu…”
Atsumu shifted onto his knees. “I can’t believe you’ve never taken a cock before. I find that hard to believe,” Atsumu rubbed the tip of his cock against her clit.
Y/n herself can’t believe she hasn’t either. It may be partly because she never had a heat to begin with. Y/n sat up and reached for his cock, her eyes bewitched at the size of his cock. “It’s so… big.”
She wasn’t big and she was aware of it. The first time she spent her rut with an omega, she thought it was a disaster, not knowing what to expect but the omega had expressed how good her cock felt.
An omega once told her with a wink, “it’s now how big, it’s how you use it.”
“I won’t deny that I’ve never wondered how you would look beneath me, Y/n.” Atsumu admitted, “surely you must know you’re fucken desirable, right?” He pushed the tip of his thick cock in her, groaning when her walls tightly refuse to let him in until he compel, shoving just the tip through. “Relax for me, Y/n…” he slowly pushed back and forth, pushing more of his thick long cock into her until she has lubricated his cock, taking him easier. His eyes were transfixed at his cock disappearing into her pussy until she’s taken all of him. Looking up he sees her eyes were squeezed tightly shut, her lower lip trapped between her teeth. Reaching up he freed her swollen lower lip and smoothed it with his thumb. He pressed his thumb past her lips, “bite me instead…” His cock jerked when she clenched her teeth against his thumb. “That’s it, baby…”
Her teeth loosened and she wrapped her tongue around his thumb, sucking it.
“Fuck…” Atsumu swore before choking out a chuckle, “I’m going fuck your mouth afterward.”
Y/n freed his thumb, “promise?” her legs wrapped around his hips pressing herself upwards to him. “Hurry,” she pleaded, “fuck my pussy, ‘Tsumu…” She never thought she would hear herself say that phrase.
Atsumu didn’t need to be told twice. His body crushed her small one, sandwiching her to his bed as he hiked her legs and began thrusting into her pussy. The bed began to shake violently and the wooden bedframe creaked loudly.
Y/n’s arms encircled his neck tightly while her fingers weaved through his strands of dirty blond hair, gripping them firmly at the roots and giving it a gentle tug. Her hips rolled, meeting his powerful thrusts. She cooed and encouraged him, “yes! Yes… just like that… fuck… you’re so big, ‘Tsumu… you feel so good…”
Atsumu only hummed, his mouth busy sucking a perfect hickey against her neck. It has always made him jealous seeing other omegas mark her and now it is his turn and he is going to make sure his mark is engraved into her skin.
His hips fasten, cock repeatedly hitting her sweet spot. If it felt this wonderful already, he couldn’t imagine how it would be when he was in a rut, when his senses would be fully heightened.
“Y/n,” Atsumu groaned, sliding his tongue along her neck and to her jaw, licking along her cheek. He felt so high, in a state of bliss. Every thrust into Y/n’s pussy sent pure excitement and euphoria pulse through him. “Look at me,” he growled, and when she found his brown eyes, he leaned down and kissed her.
Their tongues tangled and eagerly danced as their mouth moved over each other hungrily.
Atsumu was finally satisfying a lingering curiosity within him, having Y/n beneath him and kissing her.
Y/n moaned his name breathlessly from his kisses, “my tummy… it feels tingly… I’m – I’m going to cum… please let me cum…”
The tightening of Y/n’s pussy and increased enhancement of her pheromone pushed Atsumu to the edge, losing the last of his control. He tightened his arms around her small body and pounded hard until the tip of his cock continue to stimulate her cervix. He badly wished he was in a rut so he could penetrate her cervix and knot her.
Breed her.
Y/n’s teeth sink into his collarbone as she comes undone, her nails digging into his shoulders as her body trembles.
Atsumu follows seconds later, filling her pussy with his hot cum.
There’s no going back, I can’t let her go now, he tells himself. He inhales her scent, feeling his cock already semi-hard once again.
.
“I feel like I haven’t seen you two in a long ass time, what have you guys been up to?” Their mutual friend, Ryuji said, gesturing to Atsumu and Y/n to take a seat in the two empty spots at the end of the table.
“Just the same stuff, training and tournaments,” Atsumu shrugged, pulling the seat for Y/n and pushing in the chair like a gentleman. “Season is wrapping up so I’ll finally get some relaxation.”
Atsumu and Y/n were oblivious to their physical intimacy, they didn’t see how their three other friend’s eyes widened as Atsumu’s body turned towards Y/n, his arm resting behind her chair and thumb rubbing circles on her upper arm. He fills her plate with food and continues updating his friends about his life.
Of course, he is keeping his relationship with Y/n out.
It has been two weeks since Y/n’s first heat, and it took almost two days for her heat to conclude and yet, neither of them has had their fill. They have fucked each other in every possible space in their apartment. Day and night, every possible moment.
They had even pulled a quickie in his car before meeting their friends.
“Be my good girl and keep my cum in you. I’ll reward you later,” Atsumu murmured breathlessly. Y/n could only nod as she squeezed her walls and slip off his cock. He assists by slipping her panties back in place before lifting her and placing her gently back in the passenger seat before slipping himself back into his pants.
Aside from Y/n’s lightly pink cheeks, he didn’t think anyone would notice their coupling.
“Are you two… seeing each other?” Their other friend Yuma carefully inquired.
Y/n was the first to calmly deny it and laugh softly, “no, why do you ask?”
The three friends, Yuma, Ryuji, and Masachi, exchange glances, silently acknowledging a shared thought but opting to not broach the subject further.
They didn’t need to.
No one would be stupid enough to even dare look her way with the way that she reeked of Atsumu’s pheromone. It unmistakably screamed she belonged to him, and him alone.
.
The minute passing was only making Atsumu anxious.
Y/n promised to be home thirty minutes ago and it was past the promised time by ten minutes.
Atsumu was aware of his behavior, the possessive behavior he harbored for Y/n. He couldn’t deny it and it only continued to manifest each passing day.
He couldn’t even blame it on his upcoming rut that only seemed to have enhanced with Y/n’s change of pheromone as of late. Atsumu couldn’t quite put his finger on it but something about her has changed and it only made him more addicted to her.
There was one thing that he knew for sure and it was that he was in love with Y/n and wanted her and only her.
.
Y/n was fully aware of Atsumu’s perilous fixation on her.
She had not meant to let their fling go on this long, or at all. It was all a mistake and now… she couldn’t undo it.
She acknowledged that he wasn’t the only one going through this change alone. Y/n too has become possessive of Atsumu. When he would come home with the scent of another omega on him, she would feel her mood turn sour.
Y/n refused to accept it but since having sex with Atsumu, she has not wanted an omega again. She came to terms that she had officially adopted the omega gender, a lot sooner than later for other hybrids. It was inevitable with the amount of sex she was having.
Studies have shown that the more dominant gender would manifest with the amount of climax and chemicals released each time. Whichever gender they possess during their highest climax constantly, their body will begin to adapt to that gender.
It was an addiction, once Y/n had a taste of being an bottom, there was no going back. She craved for Atsumu, his pheromone, his cock deep within her. She craved feeling his thick cock graze and stimulate her pussy walls. She craved being filled to the point her belly bulged.
Y/n began to be delusional. She has never wanted to be knotted so badly, she wanted Atsumu’s knot. She wanted to be bred.
Aware of her behavior and obsession with Atsumu, Y/n tried to meet other alphas… hoping any alpha would do but when she was approached by an alpha at the bar, her nose crinkled in disgust.
It was undeniable that Atsumu was all she wanted.
For a brief moment, she allowed herself to be greedy, to give in and savor all the seconds she could have with Atsumu. She convinced herself that if she took as much as she could from him, she could let him go and move on with their lives.
She fueled his obsession and possessiveness, allowing him to have his way with her, and ravish her body, mind, heart, and soul to his content. After all, she not only wanted something to remember him by but the same for him, even if it was just her body. She’ll make it so that he would only think of her when he would be with future omegas.
They were constantly having sex everywhere and at any time, morning sex, second-morning sex, before-work sex, after-work sex, shower sex, and bedtime sex. As if they were in a constant heat and rut cycle. She was not blind to Atsumu’s attempts to mark her. Every time he took her from behind, she would freeze when his teeth would graze over her scent gland, where his teeth could puncture the sacred spot that should be reserved for her mate. Her hand would cover the spot but Atsumu has now locked her wrists together above her head.
Y/n has become weak for him, submissive per se, and allowed him to do what he pleases.
But she needed to put an end to it.
Whatever they were doing was unhealthy.
.
“Why – why are you doing this?” His voice wavered, his tone laced with pain.
She waited for him to return home from his daily training and as soon as he entered through their apartment doors, the bright smile he always had faded slowly as he felt the heavy atmosphere in the room. Y/n called for him to take a seat across from her before breaking both their hearts.
“We shouldn’t have even started this in the first place, ‘Tsumu.” Y/n said calmly, but she was anything but calm.
“Don’t call me that, if you don’t want to be with me anymore you have no right to call me that!” A tear slid down his cheek. “Only the woman I love can call me that.”
Y/n held back her tears and swallowed hard before forcing the words out again. “Atsumu, this thing between us should not have even happened in the first place.”
“Why not?” he argued, “it was like you forced me or I forced you. Everything up until now has happened because we both wanted it, and both needed it. We needed each other!”
“Look at us, we know what happens when you cross that line between friends!”
“So what, we can be lovers now?” Atsumu shot back, roughly wiping his tears away. “We can be boyfriend and girlfriend and whatever more if you want, I don’t care. I just want to be with you. I just want to love you!”
As if a veil lifted, she suddenly realizes he loves her.
Y/n blinked, the tears that filled her eyes slipping down her cheeks as she heard his confession.
“You – you do? Like in a real relationship?” Y/n clarified with a careful tone. She didn’t want to misinterpret his words.
“Fuck yes. Do you want to be in a relationship? Then let’s make it official. Do you want to get married? Let’s get married. You want me to mark you, I’ll be glad to mark you to let the whole universe know you are mine…” Atsumu took steps until he was in front of her. When did she look so fragile, so small? He wrapped an arm around her back while his other hand cupped her cheek, wiping away the tear that slipped down her rosy cheek. “I want whatever you want, just as long as you are by my side. Whatever title you want, you can have it all.” He rests his forehead against hers. “But if you are to ask me, I want you as mine in every possible way.”
Y/n shut her eyes tightly. “Say it again,” her voice was barely above whispering, “say you love me again.”
“I love you, Miya Y/n.” Her eyes snapped open and Atsumu grinned, “you didn’t ask but I’m going to give you my last name, so no backs.” He rubbed the tip of his nose against hers, “tell me, Y/n… tell me you love me too.”
“I love you, Miya Atsumu. I love you.”
His life felt 99% complete, there was only that 1% left.
“Now, tell me you’re going to stay by my side for the rest of our lives?”
Y/n pressed her lips to his, wrapping her arms around his neck. “I’m going to stay by your side for the rest of our lives.”
.
Her fingers tremble as the third pregnancy test reveals the same thing, a positive result.
“No… how…” she muttered to herself. She dropped it into the garbage can and massaged her temple.
She began experiencing symptoms that she couldn’t avoid and excuse any longer.
Craving, tenderness, and fatigue.
Everything that was pointing to what she was afraid of was pregnancy.
But how? Atsumu has never knotted her.
“Pregnancy can happen without a knot, it is not as common but it can still happen if you are extremely sexually active.” The doctor raised a brow, questioning, “especially if you are not using protection. Are you sexually active? Having unprotected sex more than four times a week?”
Y/n’s ears burned and she was embarrassed to answer the question.
She and Atsumu did use condoms but would forget, losing themselves to the feeling of skin on skin. Y/n was weak to Atsumu’s begging to always cum inside her. It was to feed his ego of knowing she had a part of him inside her at all times.
Her silence and flushed cheeks were all the doctor needed to know. “The chance of conceiving is much higher if you and your partner are extremely active, which is the case since you said your partner has yet to knot you?”
“That is correct,” Y/n answered meekly.
“With this confirmed pregnancy, there is a high percentage of you becoming an official omega.” They explained that Y/n would no longer be a hybrid, and would no longer have any alpha traits.
The doctor placed a booklet before her titled New Mommy and What to Expect and went through it briefly.
Y/n cleared her throat before asking, “my… partner is due for his rut soon… would it be okay to be knotted while… pregnant?”
Her doctor nodded and flipped to page 8, with big and bold letters at the top: Knotting during pregnancy. “You should be fine, if anything, your body will need your partner’s semen to nourish your pregnancy.”
.
Y/n shivered feeling the heavy pheromone throughout the apartment. Now, it made sense as to why she had been sensitive to his pheromone lately, her pregnancy hormones had enhanced all her senses. “Atsumu?”
Before she could check the kitchen, strong arms enveloped her in a tight bear hug. His hot body heat penetrated through her clothing and she was swallowed wholly by his pheromone at straight physical contact.
His nose buried into her neck as he inhaled sharply, “what took you so long?”
He knew of her appointment but it did run slightly longer than she anticipated.
Before she could answer him, he picked her up, throwing her over his shoulders and carrying her to his bedroom.
Y/n blinked, hands pressed against his lower back to steady herself… and at the same time comprehend the sight in front of her.
Atsumu’s bare ass. He was completely naked.
She is dropped onto his bed and is immediately pressed against the mattress with Atsumu’s body which somehow feels larger than usual, she feels so small under his body.
His mouth is hot and heavy on hers, his fingers already pulling and ripping off her clothes just to feel her naked flesh against his.
Y/n gasped, feeling his cock pressed against her abdomen, it sent a jolt to her pussy and she instantly felt herself wet.
Atsumu straddled her small body but kept his weight off of her. The only weight he had on her was the weight of his cock and heavy sacks against her lower abdomen. His eyes are glowing gold and dilated, a trait of an alpha in a rut cycle.
“Y/n,” he groaned, rocking his cock against her bare skin, seeking any sort of physical touch. He was fighting against losing control, he didn’t want to scare or hurt her. “I don’t want to hurt you… but my rut cycle… it can – I’ve been told I’m too rough… I might hurt you…”
Y/n cupped his cheek, “you will never hurt me, ‘Tsumu…”
He nuzzled against their palm, pressing a kiss to it. “I’m happy to hear… You’re made for me... right? You can take my everything I give you, right?”
She nodded her head like an obediently, eager to please. “Yes. Yes, I am made for you. I will take everything you give me, ‘Tsumu.” She widened her legs, offering herself to him, “hurry, give me your knot.”
Her approval and request are all Atsumu needed to hear to be tipped over the edge, to allow his rut cycle to take over and please Y/n.
He flipped her over onto her tummy and lift her ass, his palm came down onto her left cheek, making her yelp before moaning. He rubs his more than ready cock along her slits before pushing it deep within her warm pussy, stretching her to accommodate his rut-size cock.
Atsumu leaned over her, his whole body wrapped around hers from behind as he pressed a light kiss below her ear, murmuring, “relax for me…”
Y/n’s buried face against his comforters helped her control her breathing as she tried to accommodate the size change of his cock, something that was march larger and thicker than usual. Atsumu was already large and thick in the first place, but his rut-size cock was on another level.
“That’s it baby,” he cooed, feeling her ease up. He wasted no time ramming his cock, groaning as he nudged her cervix opening that immediately began spreading. “I’m going to knot you, baby. Give you the knot you deserve.” He leaned back, straightening himself before scooting them to the edge of the bed. He stepped off but kept Y/n remaining at the edge of the bed with her ass still in the same position, with that, he ram his knock repeatedly.
The bed squeaked along with the clapping of their skin on skin.
Atsumu’s fingers dug deeper into Y/n’s hips, pulling her back to meet his thrusts hard and fast, his cock stimulating quickly each time the tip of his cock would touch her cervix opening.
It wasn’t as common to knot on the first time but Atsumu is positive he will knot her. Her cervix has already propped open, encouraging and readily welcoming his knot.
And he will happily oblige.
He withdrew quickly, smirking at her whimper of emptiness. Flipping her onto her back, he smiled down at her and swiftly filled her with his cock once more. “I need to see your face the first time that I knot you.”
Her eyes enlarged, knowing knotting rarely occurred on the first try, at least for her during her rut cycle days.
“Your cervix has already opened for me,” he whispered hotly, fastening his hips. “Your body is ready for me, for my knot.”
Her eyes rolled back as he confirmed it, the tip of his cock pushed past her opening and locked in place. A loud moan escapes from Y/n’s lips as she tightens and curls against him.
His sack emptied its load of cum deep, filling her womb, breeding her.
Atsumu has been impatient, wanting to impregnate her soon, wanting to see her full and round. Wanting to meet their children who will take after Y/n.
He groaned in pain and pleasure. It was true to the rumors, knotting the person you love was different in all the best way possible. The intimate bond was indescribable.
His thumb massaged deep circles into her hip, trying to distract her from the pain of his knot. “You did so well, you’re taking my knot so well…” he murmured, pressing light kisses all over her face.
Atsumu is suddenly hit with a self-awareness of being selfish. He had never even discussed it with her about children yet, here, he had knotted her. It was a 99% chance of guaranteed pregnancy.
He dropped his head beside her and muttered an apology.
“Why are you sorry?” Y/n asked, rubbing the back of his neck.
He rolled them onto his back with her above him. He avoided her eyes, “I knotted you without asking if you would be okay with… being pregnant…” His eyes closed, unable to witness the expression she might give him.
“Atsumu, look at me.”
His eyes snapped open at the tone of her voice, one he had never heard her use on him. Panic surged through him as he searched her eyes. His eyes suddenly fell on her tits, noticing they looked slightly bigger than he remembered.
“My eyes, Atsumu, look at me.”
With flushed cheeks, he reverted his gaze to hers and swallowed. She shifted over his cock, his knot already begun to deflate.
“I had wanted to announce this much differently but… there’s no better time to announce it than now,” she giggled and reached for his hands and pressed them against her belly. “You see, I’m already pregnant.”
Atsumu’s world froze as he processed her last sentence. “Come – come again?”
Leaning down, she pressed her lips to his, “I’m already pregnant, Atsumu. We’re expecting.” Her eyes widened as she squealed, pressing her hands against his strong muscles. “Atsumu!” she shrieked. Atsumu’s cock that was still inside her had instantly become erect once again.
He groaned and pulled her down flushed against him. “My cock is just as excited…” That meant he would get to have all the raw sex, knowing his duty now is to supply her body with all his cum. Rocking his hips he slowly thrusts into her, ignoring how each time he withdrew, his cum would leak.
Y/n pushed against his chest until she settled on her elbows, trapping his head in between them. Her face hovers over his, “the doctor says my gender has officially changed, I’m an omega now. So, no more rut-cycles for me.”
“Good, you’re my omega now,” Atsumu thrust upward, his hand came around the back of her head and pressed her lips against his, “only mine.”
. . .
E/n: :)
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