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It was a known fact that finding a mate could affect an omega's heat cycle. That was how Lan Wangji found himself being miserable in the middle of summer.
Since his presentation three years ago, his heats had always happened during winter and spring; considering the increase in body temperature the cycle brought with it, he was thankful for their timing. Unlike many newly presented omegas, Lan Wangji’s heats were always on schedule, his brother liked to tease him that even his cycles followed Lan Wangji’s preference for order and punctuality. That is why, when he started to feel the usual symptoms of pre-heat at the height of summer, he worried.
After meditating about his situation, he realized there was only one possible cause for the suddenness of his upcoming heat: Wei Ying.
The alpha had waltzed into Lan Wangji’s life with the force of a snowstorm, he had turned his worldview upside down, had made him feel things he wasn’t even aware he could feel. A small part of Lan Wangji resented him for it, he had had a peaceful life up until he met him. But a larger part, the one that made Lan Wangji’s eyes never stray away from Wei Ying’s brilliant presence, did not mind much. Did not mind in the slightest, in fact.
With clarity, it came acceptance.
Even if it was embarrassing to inform his uncle and brother about his altered cycle, they were in the middle of lectures, so his absence would surely be noticed by others and could lead to unwanted rumors.
As expected, his family immediately realized what this abrupt change in schedule meant, and once Lan Wangji explained his suspicions, his uncle looked close to a qi deviation; his brother, in contrast, smiled softly at him and offered to send to the Jingshi anything he might need.
The excuse they gave to the rest of the class (a lie, in reality, one for which his family had dutifully self-punished themselves with copying the rules) was that he had to attend an urgent night hunt. It was better if people didn’t find out yet that Lan Wangji’s mate was within the class. At least not until uncle secured a marriage contract with the Jiangs.
Lan Wangji tried, and failed, to not feel excited at the prospect of being engaged to Wei Ying. It was still unsettling to acknowledge how much he liked and wanted someone, so he decided to not dwell on his emotions until there was no other alternative.
As it turned out, the time came two days later, when his heat finally started.
In the past, all he had felt during his cycle had been a mild fever and an agitation that could only be calmed down with exercise. Lan Wangji usually dealt with the pent-up energy by practicing sword forms in his garden until collapsing, and after a soothing bath, resting in the soft nest he had created.
This heat was something else.
No amount of exercise could quiet down the restlessness thrumming under his skin. He was also sweating more than usual and the place between his thighs felt hot and tender. He had never felt the urge to touch himself before, but now his instincts drove him to find relief one way or another. As his first orgasm washed over him, he realized he needed more, so he went from rubbing, to humping, to dipping fingers inside himself. For a day, it was alright, but his need for something just kept escalating, until his efforts no longer satisfied him, no matter how many times he came. By the end of the second day, he was a twitching, unsatisfied mess. He cried bitter tears, trying to figure out what he needed to make the pain, and the emptiness inside himself, go away. All he could think about was Wei Ying: his beautiful face, his smile, his hands and long elegant fingers…
A lighting strike of realization had him tumbling out of bed, and running on shaky legs towards the bathing area. A quick scrub later, and an equally quick stop at his vanity table, had him standing at the Jingshi’s door, wearing only the bare minimum layers to not look indecent, waiting for the curfew gong to resound and allow him to go looking for his mate.
What felt like an eternity later, he finally slipped out of his home in silence, and made his way towards the Jiang sect quarters. Even with all-consuming need eating him alive, he was raised with manners, therefore he knocked on Wei Ying’s door and waited.
And waited.
There had been noise before, but now no matter how much he strained to hear, all he could listen to was the whistling of the wind. Could he have imagined it? Before he could enter the room, forgoing all etiquette, the door suddenly opened, revealing a slightly disheveled Wei Ying.
It had only been four days since Lan Wangji last saw him, but to his heat-addled brain it felt like weeks. He took a deep breath, eyes closing in bliss at smelling once again the lovely scent of his mate. Tears of relief made a silent path down his cheeks..
“....Lan— Lan Zhan?”
Wei Ying stared at him with wide eyes. He was probably trying to process the fact he was seeing him barely dressed, crying and at his door after curfew, not to mention that to him, Lan Wangji shouldn’t be at the Cloud Recesses at all.
From over Wei Ying’s shoulders, he could see the equally shocked faces of Jiang Wanyin and Nie Huaisang. Lan Wangji had forgotten Wei Ying was sharing with his brother, as for Nie Huaisang’s presence, the stench of alcohol coming from inside was explanation enough. Swallowing the shame of other people looking at him in his current state, he grabbed Wei Ying’s wrist and started dragging him towards the Jingshi.
That finally shook Wei Ying out of his shock.
“Lan Zhan, wait!” He exclaimed, trying to wrench his arm away. "What are you doing? What happened? Are you hurt? Why are you crying?”
“Hey! Let my brother go!”
Lan Wangji hardly had patience for Jiang Wanyin on a good day, today, the last thing he wanted was to hear him speak. Without turning around, he put the silencing spell on the three of them. He then threw Wei Ying over his shoulder and climbed onto Bichen.
It was a waste of spiritual energy, but it was the only way to move fast without running; there is no rule against riding your sword within the Cloud Recesses. Hm, maybe Wei Ying had been influencing him more than he had realized.
The alpha in question was thrashing vigorously in his arms, trying to get himself out of them.
“Stay still,” Lan Wangji hissed, “we will fall down if you keep moving.” The wriggling didn’t stop, so Lan Wangji did the only thing he could think of: he smacked Wei Ying’s ass. His mate made a high-pitched sound and hit Lan Wangji’s back with one of his fists, but after he delivered two additional stinging slaps in quick succession, the struggle finally bled out of his body. With a small relieved breath, Lan Wangji confirmed that they weren’t being followed either. It was all going great.
When they finally reached the Jingshi, he threw Wei Ying inside his nest and wasted no time in disrobing.
Being so close to Wei Ying, to his scent, triggered another wave of heat. He could feel himself dripping slick, he needed to have his mate right that instant or he was going to die. Wei Ying's eyes were enormous as he looked at him.
Lan Wangji released the silencing spell.
“Lan Zhan what the fuck!”
“It is your fault I am like this,” he retorted, annoyed. “Take responsibility.”
His pants fell down. Wei Ying's eyes raked over his form shamelessly. He audibly gulped.
“Lan Zhan, I don’t think this is a good idea,” he said faintly.
Lan Wangji could smell his arousal in the air.
“I don’t care,” he reached inside Wei Ying's pants and fished out his cock. At the contact, Wei Ying squealed and tried to wiggle away. Lan Wangji tightened his hold, earning a pained whimper that went straight to his cunt.
“Lan Zhan!” Wei Ying whined, and though protesting, his escape attempts were weak and half-hearted at best. Lan Wangji ignored the pushing and wiggling to focus on the dick in his hold. He tried a few experimental pumps, amazed at the size and warmth of this part of Wei Ying. The slide was a bit dry, and he didn't have any idea about proper technique, but Wei Ying seemed to enjoy it nonetheless. He rubbed his thumb over the shiny tip and Wei Ying fell back to the bed with a moan, hips bucking into his touch, escape attempts completely forgotten.
His sounds and the show of submission stirred something within Lan Wangji. He felt himself clench and drip, throbbing with the need to be filled.
Breathing heavy, he climbed on top of Wei Ying. With one hand he kept his mate in place, pinning him down by the neck, and with the other he gathered slick and used it to wet Wei Ying’s length. He felt his whole face flame at his own shamelessness, but he had Wei Ying here, under him, he wasn't going to stop.
He positioned Wei Ying’s cock at his entrance and, as he felt himself yield to the intrusion, he sank down in one go. Both cried out, albeit for different reasons; Wei Ying, in ecstasy—Lan Wangji could feel him twitch and swell inside him—and him in discomfort, unprepared as he was to take something thicker than 3 fingers.
Tears blurred his vision, his hands clenched and unclenched around Wei Ying's windpipe and his pectoral, his legs trembled as he tried to get used to the feeling of being split apart.
“Lan Zhan?” Wei Ying wheezed. Lan Wangji relaxed the hold around Wei Ying's neck but did not move his hand away. “Are you okay?”
He didn't reply, just continued focusing on breathing and relaxing his body.
“Let me up please, I need to—I need to hold you Lan Zhan.”
Reluctantly, he released his hold. Wei Ying was on him in an instant, cradling him between his arms, which was nice, but the sudden movement forced his cock deeper, eliciting a pathetic whimper from him
“Shit Lan Zhan, why did you do this?” Wei Ying said concerned. “Breathe with me.” He started caressing him all over, licking at his scent gland, releasing comforting pheromones and whispering sweet nothings in his ear. “Better?”
Lan Wangji moved his hips experimentally, earning a gasp from Wei Ying. With his help, he started bouncing a little, and as soon as he confirmed there was no pain, he braced himself on Wei Ying’s shoulders and started bouncing with vigor, mewling every time Wei Ying’s cock brushed over something inside him that felt incredible.
All of Wei Ying’s reservations about the situation had flown out of the window the moment he felt Lan Wangji tight around him. Instead of pushing him away, now he used the grip on Lan Wangji's waist to help him slam down harder. Their moans and cries of pleasure were so loud, Lan Wangji was sure the whole Cloud Recesses could hear them. Cock-drunk as he was though, he didn't care in the slightest.
Wei Ying's mouth was spouting nonsense Lan Wangji did not have the capacity to understand, so, considering he could make better use of it, he halted his frantic rhythm and with a fist tangled around Wei Ying's ponytail, brought his face towards his right nipple.
His mate latched as if ravenous, sucking with such vigour Lan Wangji's toes curled, his eyes rolled back and he came. He spasmed in place, clutching Wei Ying’s arm—probably scratching him—while he rode the waves of his orgasm, moaning.
Not even waiting for Lan Wangji to stop trembling, Wei Ying reversed their positions in a heartbeat, throwing Lan Wangji's legs over his shoulders to continue pounding into him, chasing his own release.
All Lan Wangji could do was keen high and reedy as he was fucked through the oversensitivity. Everything was a whirlwind of sounds and sensations—their sweaty bodies sliding together, the slurping noises of his pussy, the creaking bed and Wei Ying's loud panting.
Lan Wangji was also distantly aware he was the one babbling now, the control he usually kept over his words fucked out of him.
“Too much!” And then, “Don't you dare stop”, “Yes! Right there!” and over and over like a prayer, “Wei Ying, Wei Ying, Wei Ying.”
The knot expanded so suddenly he barely had time to make a confused, inquiring sound at the sensation before Wei Ying was coming with a scream of his name, flooding him with gooey warmth. The stretch was overwhelming, he clawed at Wei Ying's back unsure if he would be able to take it, but his body molded to the intrusion and soon it felt good, so good he came with a choked out sound, thighs trembling and cunt milking Wei Ying’s cock dry.
Dazed, he stared at Wei Ying’s beautiful face lost in pleasure above him, body boneless, finally sated after getting the breeding he needed. Equally stupefied, Wei Ying bent down and kissed him. Neither had experience with this either, and both were so far gone it felt more like sharing breaths that anything else, but it was incredible nonetheless.
Wei Ying broke apart way sooner than Lan Wangji would've liked and slumped over him with a quiet grunt. He happily wrapped his mate between his arms and legs, not wanting to separate their bodies even an inch. Wei Ying continued the lazy kisses under his jaw, over the column of his neck, licking and definitively leaving marks behind. When he reached his scent gland, he scraped his teeth over it teasingly, gave it a good suck that almost made La Wangji come again, but disappointedly, did not bite down.
It didn't matter.
Wei Ying was going into pre-rut, he could smell it. It was going to be so easy to coax him into a mating bite. It could even help to convince the Jiangs—not that it would be necessary, since they would be stupid to not accept a marriage alliance with the Lan. They could have a fall wedding, or would that be too soon? But if Lan Wangji ended up pregnant—which with the amount of cum Wei Ying produced was almost guaranteed—the sooner the better. Wei Ying's red robes would match the fiery reds of the autumn foliage. He was going to look resplendent.
With that last thought, Lan Wangji finally allowed Wei Ying’s soft purr to lull him to sleep.