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If Your Prefered Mate isn't an Omega Store Bought is Fine

Summary:

All Jiang Cheng wanted to do was help his sect succeed no matter the cost. Even if it meant changing his secondary gender to help attract a rich mate. Good thing his friend Lan Xichen is willing to lend a hand.

Notes:

Here's my first fic for this fandom and oh boy it's the longest PWP I've ever attempted. I love these boys so much and really, Jiang Cheng deserves a good fuck.

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

Work Text:

“There’s nothing here!” Jiang Cheng growled as he threw a useless book over his shoulder. What good was the Gusu Lan forbidden library if it didn’t have the information he needed? He grabbed the next book on the shelf and flipped through the pages only to come up empty-handed again. “Anything useful over there?” he called to the other side of the library where his companion was hidden behind another set of shelves.

 

“No…” A defeated sigh came from the other man, “Are you sure this is something you want to do? If we find the text, once you start there’s no going back.”

 

Jiang Cheng wanted to smash his head on a corner of the bookshelf in front of him. No shit there was no going back. The man personally liked being a Beta. He could focus more on his cultivation and sect while not having to worry about pheromones or going into a rut or heat. That is until the annihilation of his sect and family. After grieving he was able to start the repairs and travel to recruit more disciples, but the young sect leader realized something: a Beta couldn’t do something like this alone.

 

Attempt the impossible could only get you so far on grit and determination alone. Sometimes it requires sacrificing your own happiness for the wellness of others. If Yunmeng wanted to survive, he would have to make sacrifices to ensure funding and strong disciples to help rebuild and cultivate under him. 

 

All the great sects had an Alpha leading them. All strong, dominant Alphas. With his Omega sister secured in a marriage with Lanling Jin sect’s Alpha heir, Jiang Cheng could somewhat rest easily knowing there was some financial backing with the union. But it wasn’t that easy to rebuild a sect from the ground up. He needed more. He would have to tie himself to a strong sect as well to ensure his sect would survive. But who would want a Beta as their mate?

 

Qinghe Nie’s leader was currently looking for an Omega mate. The leaders of that sect were known not to have long lives and would want to have as many pups as possible before they fell to qi deviation. 

 

Qinghe Nie was known for their strong disciples and while not as wealthy as Lanling Jin or Gusu Lan, there was still old money that could be used to help Jiang Cheng’s mission. Not to mention the brute strength that the disciples of the sect wielded could help with building and hauling materials around Lotus Pier. 

 

That’s how the young sect leader found himself at Cloud Recess begging Lan Xichen for access to the sect’s forbidden library. The leader refused until knowing the reason.

 

‘Bitching’ should have brought a sour taste to Lan Xichen’s mouth and he had every right to kick the younger man out of Cloud Recess. Instead, those dark amber eyes flashed with a glint and the Alpha’s normal straight posture grew more rigid. If Jiang Cheng paid more attention to the Alpha instead of happily letting himself be led deeper into the library, he might have noticed the Alpha red flicker through Lan Xichen’s eyes as he watched the Yunmeng Jiang sect leader walk in front of him.

 

That’s how Jiang Cheng found himself in the company of the Lan sect leader who was helping him find any research on the forbidden technique. The afternoon was spent digging through books and old scrolls that had anything to do with secondary genders. As the sun traveled across the sky and the outside lights grew dim, Jiang Cheng started to feel foolish about his little quest. His eyes were starting to cross as they read the same passages over, unable to make sense of the words as his brain grew tired.

 

Just as the Beta was about to give up, Lan Xichen called his name and came rushing over. He waved a scroll in one hand with a wide smile on his face. “I found it!” He handed the scroll to Jiang Cheng and watched as the shorter man skimmed over the paper. Stormy grey eyes widened as he continued to read. He felt his mouth go dry as he read the instructions over and over again. This couldn’t be right. His cheeks started to heat up as he tried to think of how to make this plan work. How could he accomplish any of this?

 

Large hands covered his own and pushed the scroll down so Jiang Cheng had to focus on the Alpha in front of him. “Wanyin, why don’t you come to the Hanshi with me?”

 

—---

 

Jiang Cheng fidgeted with the cup of hot tea in his trembling hands. Step one was about to start. Once he drank this, there was no going back. He eyed the man sitting across from him. A calm smile graced the older man’s face as he held his own cup of tea (using different ingredients of course). There was no way this was happening, “Are you sure you’re okay with this?” The Beta couldn’t wrap his head around how the leader of one of the oldest and most respected clans would even indulge in any part of the scheme let alone offer to help with the process, “Wouldn’t Nie Mingjue be upset about his future mate already being taken by his sworn brother?” Jiang Cheng suddenly felt queasy at the idea of doing this. He didn’t want to get between the two friends for any reason.

 

Lan Xichen hummed in thought as he took a sip of his tea, his demeanor a little too calm for the situation. “We could just not tell him what happened. He’s more brawn than brains so he would buy a ‘late bloomer’ excuse when you propose your idea. You don’t need to bring any of this up to him.” The older man sounded so confident and his reasoning was sound that it left no room for Jiang Cheng to argue.

 

And why would he argue it? Lan Xichen was the cultivation world’s number one bachelor and Jiang Cheng could see why. He was also one of the most respectable cultivators Jiang Cheng had ever met. He always looked out for people he deemed important. Maybe he could trust the Lan’s leader to help him with this.

 

Grey eyes looked away from Lan Xichen and focused on the tea in his hands. Taking a deep breath to steady his nerves, Jiang Cheng brought the cup up to his lips and took a sip. It was bitter and tangy. Like drinking something spoiled. Every fiber in his being told him that this shouldn’t be going into his body and to spit it out. But he had to do this. With his sect's future in mind, Jiang Cheng chugged the rest of the liquid. 

 

Once his cup was empty, the Beta and Alpha sat in silence for a moment. Jiang Cheng was focused on the smooth table surface, his mind processing what he had just done and what his body was about to go through. He was so caught up in himself, that the Beta didn’t notice how the man seated across from him stared him down, nose flaring as if he was trying to catch any subtle change in pheromones. 

 

Neither knew how much time passed in silence. Both were too focused on the Beta’s body, seeing if the recipe they got from that old scroll had worked or if the writings were a fluke.

 

Jiang Cheng was starting to think maybe the drink didn’t work. He felt normal. Maybe he should drink some more? Before he could reach for the teapot made specially for him, but his hand was slapped away by Lan Xichen. 

 

Stormy grey eyes widened in shock as he looked up at the other man. Lan Xichen had his arm pulled up to his face, his sleeve covering his nose like he was experiencing the worst smell he’d ever encountered. Jiang Cheng knew it was him and he suddenly grew self-conscious. He knew he bathed before coming here. He wanted to get up and excuse himself. This was a terrible idea. He wouldn’t make a good Omega or mate for Nie Mingjue anyway. Who was he kidding?

 

But before he could open his mouth to excuse himself he noticed the Alpha’s eyes. What was supposed to be honey yellow was instead black from how blown out his pupils were with a halo of red around it. His posture was also rigid. Like he was holding himself back.

 

“Xichen?” Jiang Cheng didn’t know what came over him, but he reached out to the Alpha, maybe coaxing him into relaxing. But that was a big mistake.

 

In a flash, a jade-white hand wrapped around the Beta’s wrist and pulled him across the table. Porcelain was pushed off and shattered on the ground but Jiang Cheng didn’t have time to worry about the cost of those and how much he would have to repay the Lan family when he found himself straddling Lan Xichen’s lap and the older man’s tongue was shoved in his mouth. 

 

Jiang Cheng gasped in surprise. He tried to pull away, but a strong hand tangled in his hair, loosening it from its normal tight bun, and held him in place. He reached out intending to push the Alpha away, but instead, his hands balled into white robes and pulled Lan Xichen closer as his body heated up. 

 

The Beta (?) moaned as he tried to mold his body into Lan Xichen’s. The two moaned as Jiang Cheng started to kiss back. He let his always overactive mind shut down and let instinct take over. And what his body wanted right now was to absorb as much of Lan Xichen as he could. Needed him close and surround himself with the Alpha’s scent of sandalwood and rain. A scent he never noticed before with his Beta senses, but was finding it easier to pinpoint. It was comforting and Jiang Cheng wanted to surround himself with it. 

 

No longer needing to be held in place, Lan Xichen let his hands wander into purple robes, untying the sash that kept everything in place. “Ah!” Jiang Cheng pulled away from the other’s mouth as he moaned. His nipples had never been sensitive before, but right now with the Alpha twisting and playing with them, he could feel himself harden under those skilled fingers. He also felt something else. He couldn’t place it. It was something he had never experienced before. He felt empty. 

 

With his mouth free from Lan Xichen and the man busying himself with the younger’s chest, Jiang Cheng followed the comforting scent of the Alpha and nuzzled into the man’s neck, near his scent gland. But it wasn’t enough. The scent was slightly muted and it was pissing Jiang Cheng off. He never was the patient kind.

 

Pulling back for a second, causing Lan Xichen to growl in frustration as the heated-up body was farther away. But his growl stopped and he gasped in surprise when his robes were violently ripped off his torso and the younger sect leader helped himself to smell and nuzzle into his neck. 

 

Jiang Cheng couldn’t stop the moans that came from his mouth as he inhaled the heavenly scent. Unconsciously he started rutting his ass against a large, hard object under him. The pressure against him felt so good that he couldn’t help but pant and moan. Any words he tried to get out would just become muddled. 

 

“Fuck Wanyin, you’re so wet. So good for me.”

 

Jiang Cheng didn’t know what Lan Xichen was saying. Wet? But one of the larger man’s hands left his chest in favor of sneaking into the back of his pants, fingers poking at his asshole, the tip easily slipping in. Jiang Cheng gasped at the feeling of such an intimate part of his body being prodded at. But before he could get used to it, Lan Xichen pulled his hand out of his pants, bringing his slick-covered fingers up to his mouth, and slowly licked them clean, all the while grey eyes watched him in shock. Jiang Cheng’s mouth hung open in shock at the sight. The tea was working. 

 

But watching the Alpha eat his slick made him grow hot with want and he couldn’t help but squirm in the other man’s lap. Now aware of the wetness that was heavily leaking out of him, he could feel his underwear and pants stick to his skin as he rubbed against Lan Xichen. Jiang Cheng felt his mind fog and go hazy. Having been living in survival mode for so long, Jiang Cheng knew he needed to keep his wits. But the way the Alpha held him, he felt safe. No one was coming after him here. And if they did, Lan Xichen would protect him.

 

So Jiang Cheng let himself surrender to the heat that was starting to take over his body and let instincts direct him. And what instincts were telling him was to cling to Lan Xichen. He wanted to taste his mouth and meld into his body.

 

So that’s what he did. Grabbing the Alpha by the back of his head, Jiang Cheng brought Lan Xichen close to him until they were in a messy kiss. His fingers wound in long brown strands of hair, pulling at a knot he found. The white fabric that Lan’s were required to wear was pulled off the man’s forehead and tossed to the side so Jiang Cheng could continue to run his fingers through the other’s hair unobstructed. 

 

Neither were in their right mind to be able to coordinate. It was nothing but tongue and teeth. Jiang Cheng let himself get lost in the sensation. Large hands found placement under his ass, squeezing and pulling the cheeks apart, letting slick spread and ruin his clothes even more. The Beta whimpered into the other man’s open mouth when he found himself lifted into the air.

 

Alpha strong. Will make strong pups.

 

Carefully stepping over the broken glass, Lan Xichen managed to make it to his big plush bed. Without any warning, Jiang Cheng found himself ripped from that large, warm body and flying through the air until he hit the mattress. 

 

Lan Xichen pushed off his disheveled robes and climbed between Jiang Cheng’s spread legs, clawing at the offensive clothing that restricted his touch from the younger man.

 

“Xichen, hurry up!” the Beta growled as he lifted his hips, allowing his pants and underwear to be pulled out of the way, the shash of his robes long gone, exposing his chest, hair disheveled and splayed across the white pillows like spilled ink.

 

Lan Xichen growled low in his throat as he watched the younger man buck his hips, trying to entice him. Not like he needed that much encouragement. 

 

With their offensive clothing out of the way, the room filled with the scent of their arousal. Jiang Cheng could feel slick drip from his ass and soak his thighs and the sheets under him, probably staining them as well. But he was too lost in the heat to be bothered or embarrassed. Instead, he found himself opening his legs up, inviting the large Alpha to come closer. 

 

Lan Xichen happily accepted the offer.

 

Slotting his body between such inviting legs, Lan Xichen found himself nosing at the other man’s upper thighs, and he really couldn’t help himself. With such soft skin in reach, Lan Xichen found himself biting into the fleshy parts of Jiang Cheng’s thighs, making the Beta cry out and arch into the other man as those sharp fangs pierced his body as electricity zapped through his nerves. The nips moved higher up his thigh until Lan Xichen’s teeth tugged at Jiang Cheng’s sensitive hole.

 

The smaller man gasped in surprise. The logical part of his brain knew he would be in this position. It was after all the most sought out spot by Alphas when mating with Omegas. Where else would Lan Xichen be drawn to? But in all his years, after every time he masturbated or explored his own body, Jiang Cheng never had any interest in…well…this….

 

“N-no!” Shaking hands grasped chocolate strands and tried to push Lan Xichen away. Suddenly embarrassed by their current actions, “You can’t. It won’t work,” he gasped when the Alpha ignored his cries. His legs kicked out and tried to find a perch somewhere on the older man’s body, finding a spot on broad shoulders. Unknowingly opening his body up even more.

 

He gasped again when he felt a tongue lap at his hole, drinking in the slick that dripped out. His limbs froze in their attempts to flee from the larger man. Jiang Cheng could feel Lan Xichen smirk against his skin, “If you want to be a good Omega for me, we’ll find a way to make it work.” Then his mouth was back on Jiang Cheng, licking into him, making the other man whine at the stimulation.

 

Storm grey eyes widened. Did that noise come from him? 

 

He started to squirm away from Lan Xichen again, pushing the heels of his feet against the other’s shoulders. But strong hands grabbed him by the hips and pulled him back in place with a low growl coming from Lan Xichen. A command to stay still. A command Jiang Cheng’s body followed without his permission. 

 

Soon fingers joined the tongue, reaching deeper and stretching the pliable hole out. One finger was joined by another and another. All the while Lan Xichen drank any liquid that leaked out.

 

Jiang Cheng panted and moaned as he arched from the stimulation. His hips lifted off the mattress using Lan Xichen’s shoulders as leverage and the Alpha happily followed, mouth and fingers never leaving Jiang Cheng as he attacked the man’s prostate. Soon the smaller male was folded in half. A large hand left his hip and started to pump his hard, leaking cock that had gone ignored. 

 

With an animalistic scream, Jiang Cheng’s body seized up as he had his first orgasm of the night. Hot strips of white covered the man’s face, neck, and upper chest. Grey eyes rolled back and Jiang Cheng harshly panted as he tried to catch his breath. 

 

He felt Lan Xichen slowly lower his body back to the ground and the larger man slink up his body, licking up any traces of Jiang Cheng’s spunk off his body as it cooled off his skin. When everything was cleaned up, Lan Xichen kissed Jiang Cheng, bullying his tongue into the panting mouth in a sloppy kiss. The Beta gasped in surprise when he tasted his own cum drip into his mouth. He tried to pull away but Lan Xichen held him in place by his jaw, forcing him to drink the bitter substance. 

 

When he finished and pulled Lan Xichen smirked down at the younger man with a sharp smirk that made Jiang Cheng’s heart stutter. That was just because of the ongoing arousal brought on by the tea.

 

 “You still here Omega? We’re just getting started. Don’t forget what the instructions said.”

 

After the tea takes effect and the participant goes into pseudo heat, they must be filled with an Alpha’s knot until their body becomes accustomed to it and their body starts to form a womb. 

 

Two dexterous fingers suddenly pushed into the Beta’s loose hole. “I think you’re ready.” Lan Xichen pulled away from Jiang Cheng, giving the man his first look cock, and couldn’t help but whimper. Lan Xichen was definitely a dominant Alpha. 

 

“Not gonna fit,” the smaller man weakly groaned as his legs were forced open to make room for the larger man. His mouth wanted to protest and his limbs wanted to pull him away, but the heat kept him in place. His body craved to be filled with that monster.

 

“Oh my heart,” Lan Xichen crooned as he lined himself up, “It will fit. Your pussy was made to take this.” And with that he pushed in, getting his hot member inside the pliant body in one go. Not stopping until his hips were flush with the other’s ass. Tears welled up in pretty grey eyes at the sudden intrusion and stretch. “Look at you, taking me so well. It's like you were made to be an Omega.” He emphasized the last word with a rough thrust, pushing Jiang Cheng up the bed by a few centimeters. 

 

The Beta cried out from the sudden movement, his fingers digging into Lan Xichen’s back. “X-xichen! Too much,” he panted into the other’s ear as he tried adjusting. “Too big. C-cant!” He gasped again when he felt fangs graze at his scent gland only for a tongue to replace it and trail up to his ear where the lobe was nipped at.

 

“You need to relax, Baobei. We can’t stop now.” Jiang Cheng’s mind was foggy, but he wondered how Lan Xichen could keep his composure while in such a compromising position while he was reduced to a moaning and crying mess. It wasn’t fair!

 

A hand that was holding one of Jiang Cheng’s legs open let go and started to trail up his thigh, over his hip. Jiang Cheng whimpered as it brushed his now hard and leaking member, wanting to be touched. But instead, Lan Xichen ignored it in favor of pressing down on the smaller man’s abdomen. 

 

“Look at you,” the Alpha growled as he pulled away by a fraction to look down at their bodies. Grey eyes followed along and widened at the sight of his stomach distending at every thrust into his body. Lan Xichen reached so deeply into him, like his dick was carving a space inside his body for his womb to grow in.

 

“Oh god! Fuck!” Jiang Cheng’s head fell backwards from the sight being overstimulating for him. He blindly reached for his cock, only for it to be slapped away, “No! Need to cum! Please!” Tears started to leak down his cheeks but they were quickly licked away from the other man before they could dry.

 

Lan Xichen kept up with his hard and fast pace as he brought Jiang Cheng’s hands up above his head and held them down by the wrist with one of his large hands. “If you’re going to come, it's going to be from your Omega cunt. I want to feel it.” He kissed the Beta to stop any more cries of protest as he continued his assault. 

 

“Somethings coming,” Jiang Cheng cried out after a few minutes of being plowed into, “I can’t stop! Fuck keep going!” He cried out and yelled as slick gushed out of him, soaking Lan Xichen’s pelvis and running the sheets under them.

 

“That’s it Baobei. Good job,” the Alpha purred into the other’s neck as he used the slick to push his knot in. Jiang Cheng’s cries grew louder at the feeling of being filled so much and overstimulating his prostate. Lan Xichen kissed him again to help quiet and soothe the Beta from the feeling of his insides being painted. “You did so well for me. You’re holding my knot so well inside. Do you feel it? Do you feel your body still sucking me in and milking everything out? Such a greedy pussy you have A-Cheng.” He rumbled as he talked, but the Beta looked so fucked out, Lan Xichen doubted he understood a word he was saying. Carefully, Lan Xichen let go of the man’s wrists and brought them to his mouth where he laid kisses across the bruising skin. Letting himself coax the small Beta into a more relaxed posture.

 

Jiang Cheng felt himself come down from the orgasmic high while Lan Xichen was still firmly locked inside him. He was tired but his body still itched. Like it had a taste of the older man and was craving more. He experimentally rolled his hips, making the Alpha hiss as his dick was massaged from its place inside Jiang Cheng. 

 

“Do you want more?” Lan Xichen groaned as he pushed his torso off the smaller man, making sure to still leave them connected as his knot hadn’t gone down yet. “Did you like getting fucked so much that you’re unsustainable now?” He brushed black bangs out of the Beta’s eyes and couldn’t help but preen at the subtle blue that was breaking through the thick layer of grey. “Did you enjoy your first time?”

 

Jiang Cheng blushed when he realized what the older man was trying to do, with a squawk of protest, he pushed at Lan Xichen’s face, forcing him away. Like hell, he’d give into the man’s dirty talk! But instead of being threatening, the sudden movement caused the knot to pull at the rim of the smaller man’s hole, making him moan. “I…uhhh…didn’t mean to do that.” Jiang Cheng blushed and hid in Lan Xichen’s chest. His skin still itched and begged to be touched more, but there was no way he would openly admit it. 

 

He was already asking so much from the Alpha that there was no way he’d push his luck and ask for more.

 

Large hands grasped slim hips and in one fluid motion flipped them so Jiang Cheng was now on top, their legs tangled in a mess until Lan Xichen helped straighten Jiang Cheng so he was properly laying on top of him with his legs were straddling his hips. The Alpha rubbed his hands up and down the other’s back and caressed down to his ass. It shouldn’t have been this comforting, but Jiang Cheng couldn’t stop the soft purr that came from his chest, startling him. That wasn’t something he was able to do before. But he chose not to point it out in case it was a fluke. And if Lan Xichen noticed, he didn’t say so either.

 

“You know, you can take any pleasure you want from me,” Lan Xichen finally said in his ear once they were both settled. The statement caught Jiang Cheng by surprise, making him sit up, his hands splayed across the Alpha’s strong chest to help support himself. “There’s no reason why this can’t be enjoyable for both of us. Take what you want, just as I’m doing with your body.” As he talked, Lan Xichen didn’t stop his caresses. Clever fingers never stayed in the same place for too long. When they finally settled with one toying between the Beta’s sensitive nipples, and the other lazily pumping his slowly hardening dick. 

 

Jiang Cheng moaned as he nuzzled into the other’s neck, enjoying the light scent of sandalwood, rain, and arousal. He could feel himself harden in Lan Xichen’s large hand. He wasn’t alone as he could also feel the Alpha grow and harden inside his aching hole. The fire in the pit of Jiang Cheng’s stomach started again as he slowly rocked his hips, letting the head of Lan Xichen’s dick rub against his prostate. He mewled and panted as his hips moved faster. Soon he found himself fully sitting upright to help change the angle. The Beta wanted Lan Xichen deeper, hitting spots farther inside. Not like that was hard with all the built-up cum and slick that was leaking out of his well-used hole. 

 

“That’s it Omega,” Lan Xichen moaned as his hands found a place on Jiang Cheng’s hips, helping hold him steady. “Do you feel good?” he prompted followed by thrusting his hips up to meet Jiang Cheng’s in a wet slap. Jiang Cheng lost his voice as Lan Xichen took control but managed to nod his head as he clawed at the other man’s chest. The Alpha bent his knees and planted his feet so he could put more power into this thrust, knocking Jiang Cheng’s body around with the force. 

 

The Beta whined deep in his throat when his hole started to flutter and a hand started pumping his dick that was slapping down on Lan Xichen’s lower abdomen. He could feel another knot start to catch at his rim. “Ah..again?” he panted around the tongue that was hanging out his mouth. He keened at the feeling of being filled to his limits yet again. He couldn’t do it. Everything was too much.

 

Lan Xichen’s hand and hips sped up as he brought Jiang Cheng to orgasm again, stripes of white dirting his abdomen and the other man’s thighs. “I can’t help myself. Your sloppy cunt fits my knot so well.” He groaned as he came inside the man again.``

 

Jiang Cheng moaned at the feeling of being filled yet again. His stomach bloated slightly from how much the Alpha was cumming. “Who knew the First Jade of Gusu was so shameless?” He nosed at the scent gland on Lan Xichen’s neck, finding comfort as he let his tongue lick at the oily substance that was leaking out.

 

As Jiang Cheng relaxed into the strong body underneath him, he could feel the Alpha caress his hips and back as they both came down from their respective highs and waited for Lan Xichen’s knot to come down. 

 

A deep rumble came from Lan Xichen’s chest as he felt the Beta up like he had to make sure the other man was really there. “It's hard to not act like that when I have you bouncing on my knot and moaning so prettily for me. Like you were made to be fucked like an Omega in heat.” He felt his knot start to die down and his dick harden from its warm spot inside Jiang Cheng. 

 

The Beta whined as he burrowed farther into Lan Xichen’s neck. His body shuddered from the overstimulation and the words that came from the other man’s lips. It was getting to be too much. The hands on his hips slowly started to move Jiang Cheng back and forth, using the Beta like a cocksleeve.

 

“Mmm…no. No more.” Jiang Cheng cried from the feeling of his insides being rubbed raw. He couldn’t do this anymore! He could feel tears run down his cheeks and wet the Alpha’s collarbone. 

 

“Hmm? What’s wrong A-Cheng?” He pulled the Beta back so Jiang Cheng was forced to look at him in the face. 

 

“We need to stop.” Jiang Cheng hiccuped as he felt the member inside him twitch. “I can’t…I can’t do this anymore,” he finally sobbed out. Everything was so sensitive and hurt. He could still feel heat twisting in his stomach and pelvis, but his energy was failing him.

 

Grey eyes hazed over with tears that Lan Xichen found himself licking at the salty liquid, cooing at the Beta in a bid to soothe him. “Oh my poor A-Cheng, we can’t.” He let his hand caress the other man’s distended abdomen, making Jiang Cheng groan in pain. “You said you wouldn’t stop until you had a womb. Don’t you want to be a good Omega for Da-Ge and be able to bear his pups?” He tried to coax the Beta by moving his hips but was met with more cries of pain. Jiang Cheng was obviously overstimulated and couldn’t go another round. Lan Xichen wanted to take pity on the younger man, but he knew they couldn’t stop or else this whole ordeal would be for naught. He traced the corner of Jiang Cheng’s eye with his thumb, collecting tears before trailing his to Jiang Cheng’s lower lip and slipped it inside.

 

Suddenly he got an idea. “You know, the text never said where the knot had to go?” He smoothly pulled out of the warm wet clutch of the Beta, making the smaller man gasp out from the sudden empty feeling followed by a stream of cum and slick flowing out of him. Jiang Cheng couldn’t help the disappointed whimper that came from the feeling. “Hush,” Lan Xichen cooe., “We’re not done yet. Just going to give your pussy some time to rest. But we really should try and give you as many knots as possible.” He pulled his thumb from between plush lips with a pop. “I wonder…”

 

Jiang Cheng slowly blinked up at the older man, eyes hazy with lust and heat as he sluggishly tried to keep up with what Lan Xichen could possibly be thinking of. With a yelp, he was grabbed and pulled to the edge of the bed until his head was hanging off the edge. 

 

As he maneuvered the smaller man into a position that he deemed fit, Lan Xichen climbed off the bed, making his member leveled with Jiang Cheng’s face. 

 

The Beta moaned at the uncomfortable position as blood rushed to his head, making him even more lightheaded. “What..?”

 

“Shhh Baobei,” Lan Xichen shushed Jiang Cheng as he stroked his face comfortably, making sure to pay more attention to the man’s lips. “I’m just going to feed you my cock. Put my cum directly into your stomach. That way you can take as much as I can give you and your cunt can take a break until it’s ready for my knots again.” Before Jiang Cheng could register the words and protest, large fingers gripped his jaw and forced his mouth open. 

 

Jiang Cheng tried to mentally prepare himself for what was going to happen. He had felt how big Lan Xichen was inside him and knew it would stretch his mouth to its limits. The young Beta followed the other’s lead on opening his mouth, but instead of shoving it the whole way in like he expected, Lan Xichen just put the tip in, letting the head of his dick rub against Jiang Cheng’s tongue, making the Beta taste his precum. The smaller man moaned at the musky taste. His eyes slipped closed and let his body go limp as Lan Xichen used his mouth. He slowly started feeding him more and more of his dick. It felt never-ending to Jiang Cheng as his mouth filled until the head hit the back of his throat. Jiang Cheng’s eyes widened as his body naturally gagged at the intrusion. Tears pricked at his eyes as he struggled to breathe. With shaky hands, the Beta pushed at Lan Xichen’s strong thighs to give him some space, but the Alpha held himself in place with his hand still holding his jaw open.

 

“Relax.” He rubbed his thumb in a circular motion at the strained muscle. “The more you struggle the harder it will be to breathe. Come on Omega, I know you can take the whole thing down your throat.” As he talked, Lan Xichen carefully pushed more of himself into Jiang Cheng. He could feel the man’s throat start to loosen until his hips were flush with the other’s face, he could hear the air coming out of Jiang Cheng’s nose tickle at his balls. “There you go.” He released the jaw and instead trailed his hand over Jiang Cheng’s throat where he could feel it bulge from his member. “Fuck, A-Cheng you really took it all. So good for me.” He couldn’t hold back the moan as the other man sucked around his dick, his throat giving him a massage. 

 

Drool and precome leaked out of Jiang Cheng’s stretched lips, the liquid mixed with the tears that were freely flowing out and trailing up to his hairline. The room filled with the wet sounds of Jiang Cheng choking and groans and Lan Xichen’s moans. 

 

“Ugh! Ugh! Ugh! ” The hands that were originally trying to push Lan Xichen away were now clinging to his hips and thighs, trying to find somewhere to hold on as Jiang Cheng surrendered to his throat being fucked. As his brain drifted off, he could feel his dick start to harden and his ass leak more slick. His own hips responded to the hard thrusts coming from the Alpha as they lifted off the bed, his knees bent and feet planted to give himself more leverage. 

 

Red eyes zeroed in on the movement as the Beta recovered and became more desperate for touch. He licked his lips at the sight of Jiang Cheng’s leaking dick, desperate for any type of stimulation, and the sheets under the man becoming soaked in slick and cum that leaked out of him from the movements. 

 

Pressing in as far as he could, Lan Xichen could feel his knot form behind Jiang Cheng’s teeth. “Fuck Baobei! Stop…stop moving,” the Alpha growled as he reached forward to pin the man’s hips to the bed. “We don’t want you losing too much now do we?” The only response Jiang Cheng could get out was a whine that sent vibrations up Lan Xichen’s dick and spine. That’s all it took for the Alpha to pop his knot, firmly securing his place in the other’s mouth. He could feel Jiang Cheng shake and sob under him as his mouth stretched farther than what should be possible as his dick’s girth grew in size. He could also see the Beta’s stomach distend as cum was deposited into his stomach to the point that white liquid dribbled from between stretched lips and towards Jiang Cheng’s nose.

 

“That’s my good boy. And good boys get rewards don’t they?” He let his hands release Jiang Cheng’s hips, giving the man free roam to hump his hips against nothing. Large hands took advantage of the Beta being pinned down by his knot. Nipples were pinched and twisted, Making Jiang Cheng squeal and thrash as much as he could with his mouth filled and hands holding him in place. 

 

Once Lan Xichen felt that the Beta’s nipples had enough attention and were peaked and red, he moved to his next target. Jiang Cheng’s dick was larger than an Omega’s cocklet, the only real sign of his original secondary gender. It wasn’t as big as an Alpha’s of course, but it was long and thick enough to curve towards the man’s belly. Not that Lan Xicehn was complaining as he caressed it with one hand and the other rolled a pair of heavy balls in its palm.

 

Lan Xichen stroked Jiang Cheng with a tight, fast grip. He used all the precum and slick that was dripping from the Beta to help speed up his strokes. With a painful-sounding wail coming from Jiang Cheng, Lan Xichen felt his balls tighten up as streams of jizz painted the Alpha’s hand and the Beta’s stomach.

 

Jiang Cheng shivered from the orgasm and mewled from the dizzying feeling of being upside down for so long. Luckily he could feel the knot in his mouth swell down and Lan Xichen pull out. His jaw ached and he feared that it was dislocated and he wouldn’t be able to close it again. Raising on shaky arms and pulling himself up to the head of the bed. Blue-grey eyes fixed on amber-red. “Fucking brute,” he muttered as he rubbed his sore jaw. “Was that necessary?” When he pulled his hand away, Jiang Cheng couldn’t help but cringe at the mess that stuck to his face. “Gross.” He went to pick up a corner of a blanket to wipe away the mess, but before he could, Lan Xichen pounced on him, pushing the Beta down with his larger body and pinning his hands near his head

 

“Oh, A-Cheng, it was definitely necessary,” he said, then went to clean the other man up with his tongue, making sure to not miss a speck of dried tears and spunk. 

 

Jiang Cheng tried to pull away but all he managed to do was grind against something hard and hot that was poking him in the thigh. Seriously, did this man have any refractory period? “Stop. That’s gross,” he whined in an attempt to appeal to the Alpha’s instincts, only for it to go unheard as Lan Xichen finished his task until he deemed Jiang Cheng nice and clean.

 

“Mmm….nothing that comes to you is gross.” Lan Xichen nuzzled into Jiang Cheng’s neck as he basked in the scent of content Omega. The plan was working, But just to be sure…The Alpha groped at the younger man’s legs and spread them wide, making room for him to get comfortable, his dick now pressing against that waiting hole and easily slipping in. Jiang Cheng gasped at the sensation of being filled again. Blue eyes slipped closed at the slow rock that Lan Xichen set up. His head fell back, exposing his neck and letting pheromones float throughout the room.

 

The Beta moaned when he felt a tongue lap at his scent gland. That area had never been sensitive before tonight and just the mere feeling of Lan Xichen lightly touching it alone sent sparks down the young man’s spine. But the Alpha wasn’t just touching and licking at the spot. Instead, he was gnawing at it with his fangs. Drawing blood and leaving bruises all along poor Jiang Cheng’s neck and collarbone, turning the younger man into a mess of moans and tears from the overwhelming feeling of the bites and his body being filled yet again.

 

Lan Xichen started slow. His dick growing sensitive from how many times he’s knotted and came inside the younger man and he knew Jiang Cheng was feeling the same. Finding a better angle, Lan Xichen heaved Jiang Cheng’s legs over his shoulders, pressing the smaller body more into the mattress, pinning the man with his body weight. The new position sunk more of the Alpha’s cock into the warm heat and its different areas inside Jiang Cheng, bringing new moans and cries from the other man as newly discovered sensitive spots were hit.

 

“Xichen! Alpha! Fuck me!” Tears clung to Jiang Cheng’s eyelashes as he tossed his head back. As he panted, Lan Xichen caught a glimpse of small fangs. Something that Betas don’t possess. 

 

Leaning down and nuzzling at Jiang Cheng’s cheek, Lan Xichen coaxed the younger man into a kiss. Jiang Cheng didn’t fight as the Alpha bullied his tongue into his mouth, laving at the fangs. Jiang Cheng pulled away with a gasp as a hand started to pump his dick. But that didn't stop Lan Xichen from moving his kisses to the area where the scent of ozone leaked from. As a Beta, Jiang Cheng had a subtle scent of static. It wasn’t enough to attract an Alpha or Beta, but it was his natural scent. But now, it was like Lan Xichen was standing in an open field during a lightning storm. And he couldn’t get enough of the tempest their scents made together. 

 

With a grunt, Lan Xichen pushed his knot in, blocking in his old and now new cum from leaking out of the Beta. Lost in the orgasm and smells around him, Lan Xichen sunk his long Alpha fangs into the welcoming neck. Blood and a slick oil filled his mouth as he marked the younger man. He never stopped moving his hips so his dick rubbed against Jiang Cheng’s prostate and he quickened his hand as he milked an orgasm out of his mate. When he could feel the small Omega convulse around him and a warm liquid spill across his hand, Lan Xichen grabbed Jiang Cheng by the back of his head, forcing the man’s mouth to his neck.

 

He hissed at the sensation of small fangs biting into his own gland. A pull in the older man’s gut made him grunt as the bond linked the two together.

 

When Jiang Cheng let go he fell back into the plush pillows, falling asleep from pure exhaustion. Still knotted inside the Omega, Lan Xichen gently peeled Jiang Cheng’s legs off his shoulders and rubbed at the tense thighs to help lull the man further into his well deserved sleep. Carefully rolling onto his back and pulling the sleeping man onto his chest, Lan Xichen covered them up with a blanket that had gotten kicked off to the side and drew a protective arm around the Omega. Letting himself drift off into sleep as well.

 

—---

 

“Zewu-jun!” A smack on his chest woke the Alpha up from his deep sleep. “You bastard! Wake the fuck up!” Another smack. Gold eyes cracked open and Lan Xichen was blessed with the sight of a still naked Jiang Cheng leaning over him, hiis grey eyes narrowed in irritation and a hand covering his neck. 

 

Stretching his arms over his head and letting his back pop back into place, Lan Xichen purred, “Good morning A-Cheng.” 

 

“Good morning?” Jiang Cheng’s voice came out serious and clipped. “How is it a good morning? You ruined my plan! The whole point of last night was for nothing!” He let his hand drop as he gave another weak smack to the larger man’s chest, revealing his bruised and very bitten mating gland. Lan Xichen couldn’t help but preen at the sight. 

 

“What do you mean it was for nothing? You very much look like an Omega. Isn’t that what the goal was?” His Omega nonetheless. 

 

Jiang Cheng huffed and tried to move but flinched as pain racked up his lower back and legs, making him settle back down. “But for Nie Mingjue, not you.” 

 

Lan Xichen growled as he tussled in the bed until he was hovering over a now very shocked looking Jiang Cheng, the Alpha's fangs grazing his neck. He bristled at the sound of his mate talking about another man like that. Jiang Cheng was his! His mate. His Omega. “Your plan  was doomed from the start,” he mumbled into the other man’s ear, hearing Jiang Cheng gasp in shock. “Da-ge is already mated.” He pulled away and saw the surprised look on his Omega’s face.

 

“Wh-what?” Grey eyes were wide as he let everything that had happened to him in the last 24 hours sink in and rack his brain. How could Nie Mingjue be mated? He wasn’t marked or showed any affection to others. How could his calculations and planning be so wrong?

 

While lost in thought, he was brought back to reality when a large hand caressed his cheek, bringing his attention back to Lan Xichen, who said, “A-Yao.”

 

The Jin Beta????

 

It would make sense. Betas couldn’t leave mating bites. And neither person seemed like they would be big on PDA. But why would such a strong Alpha with so much potential willingly tie themself to a Beta?

 

Brushing bangs out of grey eyes, Lan Xichen seemed to be able to read Jiang Cheng’s thoughts and distress, probably from their new bond. “Da-ge doesn’t want pups. Not with his family’s cultivation method. He feels like it's too cruel to pass onto his own. He loves A-Yao for being, well, A-Yao. They’re happy together.” Lan Xichen couldn’t help the smile as he thought about his sworn brothers and being one of the very few to know about their little secret and share in their happiness. He really was pleased that they were able to find a way to make their situation work for them.

 

“You knew this whole time?” Jiang Cheng bit at the hand that was still patting around his face and tried to push the larger body off his, but was unsuccessful at dislodging the Alpha. “You fucking played me!” 

 

“Oh Baobei. My A-Cheng, we can use each other now,” Lan Xichen cooed as he bent down and kissed the Omega, only to get a harsh nip when he attempted to add some tongue. He pulled back and wiped the small trickle of blood off his lip. “You wanted a mate to help with your sect. Why can’t the Lans do this for you? We have the money and manpower.”

Jiang Cheng didn’t consider the Lans. He figured how Wie Wuxian and Lan Wangji ran away together, Lan Qiren wouldn’t allow his eldest nephew go through with a scheme with him due to his ties with Wie Wuxian. 

 

“I can’t offer you anything. What’s in this for you?” he challenged Lan Xichen. But he knew the answer. He could feel the warmth the Alpha felt for him deep in his soul. He could see it leak from how gold eyes looked down at him. He could smell it in the form of a light rain scent. 

 

“Silly Omega. I can show you again if you’d like.” This time when he went in for a kiss, Jiang Cheng didn’t stop him.

 

Maybe being mated to a Lan would be better than a Nie. 

Notes:

Hope you liked it! Let me know what you think.