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Dark Heat A dark Genji/Brigit(reader) story that takes places in the Alpha/Omega universe. I may write one where he is still Yakuza later.

Your hands dig into the sheets until your knuckles are bone white and you whine into the pillow while the Alpha above you ruts against your clothed raised ass with his hands braced on either side of your head. He moans and pants desperately in your ear, nipping at your neck where he would mark you as soon as you reach your first heat. You can feel the knot forming at the base of his cock with each pass against your lace underwear.

“Fuck,” he whispers a low groan leaving his mouth and ghosting across your neck as his nose buries itself against your skin taking in as much as your scent as he could. “I can’t wait for you to finally go into heat. God you’ll feel so good wrapped around my cock. You’ll be so wet and tight just begging to be knotted.”

You licked your lips as you twisted your head to the side as he continued to groan against your skin. “Genji-.”

“Shut up!” He hissed as he shifted his weight so it is balanced on one hand while the other pushed down against the back of your neck. “Just shut up!”

You close your eyes and bury your face deeper into the pillow and wait for him to finish this round so you could rest before he started on with the next round. Your body had a habit of giving off the subtle signs of a coming heat but never actually going into it. It drove the Alphas around you crazy, specifically the one rutting against you now, because they couldn’t mate with you until you had your first heat. Genji had unsurprisingly thought of a way around that little law by not technically mating with you, whether he was rutting or not. The first few times he had done it, outside of being in a rut, you had allowed it because you figured he would go find someone else to mate with during his ruts.

But he hadn’t.

In fact the first time he had gone into a rut after your return when you graduated college a year ago he had shown up at your door right before it consumed him and rutted against you with only your cotton pajamas and underwear separating the two of you. You hadn’t even been allowed to leave to shower or eat, instead he made you sponge yourself off before him or he did it himself and had you order your food in. He had in fact expected you to go into heat at some point during his weeklong rut and when you hadn’t, he had been displeased.

Well, he had been furious to be more precise.

Because it was common for mated pairs to tilt each other into their own ruts or heats, especially if there fertile time was already nearing. And he had expected to be able to fully claim you as his eternal mate and keep you full of his eggs.

Which is why the moment his rut ended he had you move into his fairly spacious room with him. And because he was so high up in Blackwatch his room was large enough to allow for a small kitchen and a decent sized bathroom that came with his own shower-bath combo. And slowly your clothing started to come off with each passing rut until the only thing keeping from him penetrating you was a thin layer of lace.

All this while he waited for you to finally go into heat.

Genji’s loud groan above you broke you from your thoughts as you felt his warm seed spill across your back and ass, soaking into your thin nightgown. The two of you stayed in your positions for awhile before Genji wrapped his hands around you, trapping your arms against your chest, as he sat up bringing you with him. He hummed happily as he pulled you into his lap.

“I can’t wait for you to experience your first heat Bri,” he muttered into your hair as one of his hands caressed your flat stomach. “So I can start pumping eggs into you. I almost don’t want to wait for you to go into heat just so I can knot you. Fucking hell if I thought you would survive it I would do it now.”

You squirmed in his hold, feeling his erection start up again as you did so as you tried to scramble from his hold as panic started to take hold as he tugged at your underwear. “Genji….”

He hushed you softly as he pressed his lips against your neck, rubbing his teeth against your mark in a mock bite as he started to bounce you on his lap as his finger rubbed against your clit. “I know I can’t. But fuck if you don’t make it hard to contain myself from doing so. “

His hands slid around your body and he pushed you back onto your hands and knees so he can go back to rutting against you as he pushes your night gown higher up your body. “The moment you go into heat I will plunge my knot inside your tight pussy no matter who is around to see it.”

“No Genji please!” you begged as you attempted to scramble away again.

“God damnit Brigit stop trying to run away from me!” he snapped tightening his grip on your hips and yanking you back against him so he could wrap his arms around your chest, capturing your arms against you. “I already fucking told you I wouldn’t knot you yet so calm the fuck down!”

While his flesh arm kept you against him, a show of power to prove he can protect you and the eggs he wants you to give him, his mechanically arm slipped between your legs and started rubbing your mound in circles. He curled over your trembling form and pressed a kiss against the back of your neck as one of his hands slide over your covered slit. His finger pressed against your clit through your underwear as he went back to rutting against your ass to his heart’s content. As he mumbled praises against your skin about how beautiful you were and how sweet you smelled.

***** Genji was away on a mission when it happened.

Your body started to give off the subtle signals of going into heat without actually going into it like it normally did and Alphas started sniffing around you.

Once Winston realized what was going on he shooed the lingering Alphas away and escorted you to your room and sent for Mercy. Shooing away Alphas and Betas who started to be drawn to your scent which had grown a bit more warmer and intense as your body prepared for the possibility of once again going into heat. Who meet the two of you at your dorm.

“Think you Winston,” she said opening your door and waving you inside. “I will take it from here.”

“Of course Mercy,” He said before flashing you a reassuring smile. “I’ll see you later Brigit.”

“ Thanks Winston,” you said softly as Mercy followed you inside and closed the door.

“I assume you remember how this goes?” Mercy asked as she placed her bag on your desk by your bed to which you nod in affirmative. “Good. I’ll get things set up here while you get ready.”

You nodded as she turned her back and started stripping yourself of the clothing, grateful for the air conditioning that helped cool the sweat that was starting to form on your body. The moment you were nude you sat gingerly at the foot of your bed and waited for Mercy to start the exam. Your heels kicking together slightly as you did so.

Mercy turned to face you as she pulled her gloves on and froze when the first thing she noticed about you were the bite marks that decorated your body like morbid little butterflies. Every part of your body seemed to have at least one, save for the neck at least where an Alpha would place a mating bite on you.

“Mercy?” you asked softly staring up at the older blonde in confusion. “Is something wrong?”

“No.” Mercy said as she shook herself and forced her mind to look at you clinically before repeating. “No.”

Once the shock of seeing the bite marks, no doubt caused by Genji who had been hanging around the little omega and drooling at the thought of you going into heat, she gritted her teeth at the idea before forcing herself to look over you clinically. Your body while putting out pheromones a bit more than usual was showing no outward signs of a body preparing for heat. Your skin had not changed in color or texture, your breasts weren’t any plumper then they normally were and your hips weren’t any more pronounced than usual.

At least there were no outward signs visible to the naked eye. Which while uncommon it wasn’t exactly unheard of for women to not show the physical signs of going into heat until right before or right after their heat first started. And often times the signs were so subtle it was hard to tell unless you were touching them.

“Shall we begin Brigit?” Mercy asked coming to stand before you.

“Yes.” You said wanting to get the whole thing over with because there was something off putting about the way the blonde doctor was looking at you.

“Have you noticed your thirst or tolerance to heat or cold changing in the past couple days?” Mercy asked as she started ghosting her hands over your body.

“No. My water intake hasn’t changed,” you answered watching her hands trail along your body. “Nor has my tolerance to temperature.”

“How is your tolerance now?” she asked as she felt your breasts to check for the tell tale signs of tenderness and fullness of a body preparing itself to be impregnated. “Are you too cold? Too hot?”

“I’m a little warmer than normal.”

Mercy paused a moment before pulling away to stare down at you her gaze latching pointedly on a bite mark at your collarbone. “Genji’s your alpha? Isn’t he?”

“Not officially I mean he hasn’t knotted me or anything,” you answered squirming under her gaze. “Why?”

Mercy blinked at you emotionlessly before replying with a tight, reassuring smile. “No reason. Please lay down and place your feet flat on the edge of the bed.”

You nodded and slowly lowered yourself onto the bed and brought your feet up so that your heels were tucked against your rare, exposing yourself to the older woman. You grunted when you felt her place two fingers inside you and fell around before placing her other hand on your stomach and pressing down. The exam felt more intrusive and seemed to take longer than it had in the past but you remained silently figuring it was because you were finally starting to begin the process of going into heat.

Finally she pulled away and you started to sit up.

“Please don’t get up until I tell you otherwise,” the blonde doctor said as she moved back to where her bag was and exchanged her gloves for a fresh pair.

“Am I starting my heat?” you asked as you laid back down when she turned back to look at you.

“You are,” she said reaching into her bag for a syringe and a small bottle. “Do you want me to inject you with suppressants? Or would you rather I retrieve an alpha to aide you in your first heat and just give you a birth control shot?”

“Suppressants!” you answered automatically and the blonde doctor nodded in understanding pulling some of the liquid from the bottle into the syringe.

“Normally I would say you would need a shot once a month, but since your heat is late you might need it more often.” She answered as she approached you and gently pressed your thigh down so that your lower body twisted to the side and the thighs rested against the comforter. “But we will see how long it takes for this to work through your system and go from there. Okay?”

“Okay.”

That said Mercy inserts the needle into your thigh and starts to push the suppressants into your system. The reaction is immediate as your body temperature sky rockets and sleek begins to pour from between your legs signaling your heat not only starting but surging through you.

“Mercy?” you shrieked in panic as you try to scramble away from her iron hard grip on your ankle. “What did you do to me?”

She ignored you as she pulled her phone from her pocket and started swiping around on it.

The familiar scent of Genji filled the room.

“Finally.” He breathed dropping the faceplate onto the floor as his eyes all but rolled into the back of his head at your scent. “I thought you would never go into heat and bare my eggs.”

Both you and Mercy froze and slowly turned to face the cyborg ninja of Blackwatch.

“Genji,” you both breathed breathlessly though your voice had a touch of fear as your body both yearned for his knot and cringed at the idea of him touching you.

“Mercy,” Genji purred not taking his eyes off you as you tried to scramble out of Mercy’s gasp. “Get lost will ya?”

Mercy opened her mouth to speak but quickly shut it and released your ankle letting you scramble from the desk and curl into a ball in the corner of the room as she nodded before gathering up her stuff so she could leave the room.

“Hime,” he purred closing and locking the door before making his way to you blocking the path between you and the door. “Don’t run from me pretty one. Let me ease your heat for you with my knot.”

“Genji please.”

“Don’t worry Hime,” he cooed as he crouched before you and grabbed your wrist. “I’m going to take very good care of you and make you feel so good.”

You shrieked in surprise when he yanked you onto his lap and held you with your back against his chest as he slowly ground against you. His cybernetic hand immediately went between your legs vibrating the fingers against your clit as his fingers danced outside your growing wetness. Your body’s natural reaction to not only your heat but his coming rut as well and it’s been aided by whatever it was that Mercy injected you with.

“Genji please don’t,” you whisper as tears begin to fall down your face but knowing it was useless a first heat of an Omega female is the sweetest prize for an Alpha and with him being so close to his own rut you won’t get out of the room unknotted. “I don’t-. I can’t-. I’m not-.”

“Sshh,” Genji whispers as his mouth nips at your neck paying particular attention to the area where your pheromones are contained.

It’s the same area an Alpha marks their Omega mate and already you can feel his caresses and bites releasing more of your scent into the air to egg both of you on. You open your mouth for one final protest but his words halted you.

“I will be sure you are more than ready for MY knot.”

Before you could say anything else Genji bit down harshly on your neck releasing your pheromones and drinking them in. And just like that a flip was switched in your head and you tilted your head back and released a long drawn out moan as you arched your back and grind your hips against him. He released a dark chuckle as his fingers plunged inside you while his teeth continued to bit and nip at your neck forcing your Omega nature to the front.

“Good girl.” He breathed as he curled into you, forcing you to place your hands down on the floor in presentation to him. “Good, sweet Omega slut.”

“Genji,” You moaned as you tried to keep one final hold on your logical mind as your Omega mind began to take control moaning for the Alpha behind you to mount, knot, and breed you.

“I love your moans,” he breathed dry humping against you as he nipped your neck releasing more of your pheromones into the air. “And your scent. You smell so sweet. So fertile. So ripe.”

A whimpered, high-pitched moan left your throat as Genji trailed his hands up and down your sides stroking your skin. His palms slipped up and cupped your breasts moaning at how fuller they felt now that you were in heat.

“Fuck baby you are going to look so good when you are swollen with my eggs. In fact, I can’t wait to pump you full of one simply so I can pump you full of another and another and another. How does that sound my pretty little Omega?”

The answer slipped from your mouth before you could swallow it back down. “Wonderful.”

“Good answer Hime,” he breathed before straightening up and trailing his hands along your spine before groaning in pleasure. “I’m going to get so many fucking eggs from you.”

That said he reached for the switch that would release the panel that covered his groin. The panel dropped to the ground with a clatter and Genji curled back over you again, thrusting into you as he did so. You both moaned at how brutality and fluidity of the thrust.

“God you are so warm and wet,” he breathed as he started thrusting rapidly into you. “You feel better than I thought you would.”

“Genji,” you breathed as he speed up his thrusts even more drawing a long drawn out sequel from you as his cybernetic hand reached between the two of you and started vibrating against your clit.

“That’s right Hime,” he breathed as his knot started to grow. “Just accept your fate as my pretty Omega and mother of my eggs. It will save us so much time. Besides you know you want to do this your body won’t allow for anything else but to be taken and breed until you are ripe with child.”

Your nails tried to dig into the floor as you tried to scramble for purchase against the brutal pace he had set. Moans and groans dropping from both your throats as he worked his growing knot against you.

“Genji,” you whimpered as your body instinctively moved so that your chest was pressed against the floor and your ass was higher up allowing him and his seed greater access to your womb as your orgasm approached.

“That’s it baby,” he praised as his knot started penetrating you and his thrusts became erratic as his end neared. “Give me your womb and your body and I’ll give you all the eggs and knots you can handle.”

You cried out as his large knot started pushing its way inside of you so it could lock the two of you together insuring you would take most of the seed. The moment it finished pushing its way inside of you, you both groaned in pleasure and your moans continued to grow in volume whenever his knot brushed against your sweet spot as he ground against you. He started nipping at your neck releasing more pheromones and slick with each bite.

“Almost there,” Genji moaned resorting to rolling his hips and shallow thrusts as it became harder to remove his knot from you. “That’s it.”

Those words seem to spur your body to grip onto his cock one final time as he finally locks inside of you allowing him to release his seed and triggers your own orgasm. The knot keeps the two of you locked together until both your orgasms died away and with it your heat filled brain leaving you gasping as your eyes filled with tears when you realized what had happened.

“No. No. No.” You chanted as you scrambled to make your limp limbs work despite the knot still locking the two of you together and keeping you in place.

“Fuck yes!” Genji moaned and sat up giving short, shallow thrusts enjoying your heat while he was locked inside you. “You feel so good.”

You sobbed and collapsed to the ground your limbs jelly once Genji’s knot released you as the last waves of your first round of heat left you, clearing your mind fully of the haze of pheromones. Genji’s hands rolled you over onto your back and stared down at you, spreading your legs open so he could watch your combined fluids leave you.

“Now that’s a pretty picture.” He chuckled as he licked his lips.

“Genji,” you whispered trying to crawl away from him as your head finished clearing and you wanted to get away from him before the second wave hit you. “Please-.”

“Don’t even think about it,” he breathed as he grabbed your ankles and spread them open even wider to enjoy the view before gathering you into his arms and pressing you down onto the bed. “I am going to continue to knot and breed you until you realize that you are mine. And we have children to bind us together.”

He moaned under his breath slowly as he trailed his fingers down your thighs trailing them between your legs and inserting three of his fingers inside you as if he were pushing them back inside you. Once again you tried to escape him only for him to growl in annoyance as he snatched up your ankles and pulled you closer to him wrapping your legs around his waist as the next wave of your heat began to build and threatened to crash into you.

“So I’m not letting you go until death claims you.” He breathed. “Now shall we continue?”

“Please don’t.” You shook your head rapidly but Genji caged you between his body and the bed as he thrust back into you as your mind began to be consumed by the next wave of heat.

“Please do.” Genji breathed biting down on your neck roughly enough to draw blood as he marked you. “Because we have only just begun.”

A week later____________

Mercy sighed and flipped the switch turning on the lights in her office, nearly jumping out of her skin when she saw Genji sitting in her office chair with his feet up on her desk.

“Genji what can I do for you?” she asked pleasantly as she set her briefcase down and tried to ignore the strong smell of sex and Brigit that clung to his own scent.

“I don’t know if I should thank you for what you did or kill you for it,” said Genji without looking up as he sharpened one of his blades.

Mercy felt the blood drain from her face as her throat dried out. “I don’t- I don’t know what you are talking about.”

“Come now Mercy,” he snarled as he examined the sharpness of the blade. “I saw the name on the bottle of liquid you injected my Hime with. I know you weren’t going to inject her with a suppressant and instead you injected her with something that would kick her heat into overdrive. And I know you didn’t do it out of the goodness of your heart. I’ve seen the way you look at me.”

Mercy narrowed her eyes. “And how do I look at you?”

“Like a whore in a never ending heat.” Genji said as he resheathed his weapon. “And when I assume you waited and bided your time for when I would go on a mission and my sweet Bri would start showing the signs of heat. Just so you could pump her full of even more hormones to either tip her completely into her first heat or make her heat even more intense. So another Alpha could get her hands in order to mount and knot her before me. And so that way you hoped if another Alpha did take her before me I would no longer want her. But what I don’t think you realize Mercy is that if I had caught another Alpha with his knot in MY BRIGIT I would fucking disembowel them and mount her covered in their blood.”

Mercy stared at him in shock as he admitted this and backed away slightly. “What are you saying?”

“What I am saying Mercy is this,” snarled Genji his dark red eyes flashing dangerously. “I forgive you for trying to knot my Brigit off to someone else this time because it allowed me the honors of finally knotting her. But if you pull a stunt like this again I will injected you with so many fucking heat hormones during your next heat and throw you to the members of Blackwatch and see how you enjoy being a real whore as they take turns knotting you over and over again. Do I make myself clear?”

“Yes. Genji.” She whimpered her throat dry from fear.

“Good.” Genji said brightly as he straightened up and headed for her office door. “Oh and Mercy thanks again for letting me finally knot my little Hime.”

The door to her office slammed shut with a loud bang of finality causing Mercy to jump. She licked her lips and stared at her desk. She knew she wouldn’t have gotten away with it, even if she had succeeded in getting Brigit knotted by another Alpha, Genji would have simply murdered that Alpha before coming for her.

And she also knew he wouldn't hesitate to carry out the threat.

Nor could she go to Jack or Reyes because messing with the Omega of another Alpha, especially an Apex one, without their permission was forbidden and they would say she only had herself to blame.

She licked her lips and started considering her options on what to do next to protect herself .

Just in case Genji changed his mind about waiting to throw her to his fellow Alphas in Blackwatch.

With shaking hands she pulled out her phone and made a call.

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