Addicted to Pheromones

[Sickly, fake world-weary cutie x King-level, genuinely people-hating man who can't talk: Push and pull to the extreme + soft persistence + bittersweet HE] Lin Shi is an Omega with a congenital condition so severe he could die at any moment. Pale and frail, gentle and harmless, he was taken in by the Alliance capital and brought to the Fu family when he was ten. The Fu family not only carefully looked after and treated him, but also provided years of comfort and luxury for his ineffectual father, his mother who did nothing but cry, his stubborn older sister, and their broken family. All because Lin Shi was raised to be a "medicine" for the Fu family's young master. The Fu family's second young master, Fu Zhiyao, is an SSS-class Alpha in the Alliance. His pheromone structure is 98% unstable. They say that an ultra-Alpha like him experiences heat almost every day as an adult, always on the verge of losing control of his pheromones. This leaves him repressed and irritable, and he can easily turn violent and twisted. Although Lin Shi's pheromones are so faint they have almost no scent, their stability exceeds 98%, making them just the thing to soothe and calm this ultra-Alpha's restless frenzy. After living with the Fu family for seven years, Lin Shi met the eighteen-year-old Fu Zhiyao for the first time. The proud, cold young Alpha lounged on the sofa. The black diamond stud in his left ear glimmered a deep red in the night, and his brow was furrowed with the irritation of his heat. Lin Shi cautiously approached and asked, "Would you like me to release some pheromones?" He never forgot that he was a "medicine." The next second, Fu Zhiyao mercilessly threw him out of the room. Whenever Lin Shi tried to approach Fu Zhiyao while the latter was being tormented by out-of-control pheromones, all he ever got was the contempt and annoyance in Fu Zhiyao's eyes, along with an impatient "Get out" or even "Stay away from me." Until one day, Lin Shi asked him, "Is there any way to cure you completely?" Fu Zhiyao removed the sparkling diamond stud from his left ear and stalked closer, his face full of disgust. "A permanent mark. Want to try?" Lin Shi, who had never experienced a heat, stood there dumbfounded. Only later did he understand that the Alliance capital saw him as nothing more than Fu Zhiyao's "special medicine." He had to stay by Fu Zhiyao's side and be at his beck and call at all times. Even if he were permanently marked, he would have to stay hidden in the dark forever, forbidden from forming even the slightest emotional bond with that SSS-class Alpha. And every annoyed "Stay away from me" from Fu Zhiyao was really a warning to Lin Shi, who was about to step into the abyss: Run. Later Fu Zhiyao, now free and alone, found the Omega who had been missing for four years and gently drew him into his arms. He kissed the pale, burning gland at the back of his neck, his lips grazing and lingering over it, and asked, "Why aren't you releasing pheromones now?" The softer his voice, the more dangerous it sounded. Lin Shi met the Alpha's dark gaze and fought the itch at the back of his neck as he struggled to answer: I can't. When I'm in heat... I could get pregnant QAQ A few notes: The worldbuilding is pure invention, so don't overthink it. Every setting serves the romance. The love interest really is all bark and no bite, constantly sarcastic, a super-strong guy, and equally annoyed by everyone and everything around him. He has no redeeming qualities except that he loves the protagonist, so please only read if you're okay with that (meekly). As always, this is an intense push-and-pull romance with a realistic style, a slow and steady progression, and a slightly slow burn. Please don't scold the author (even more meekly). Kind discussion is welcome. Please don't give me writing advice. No need to tell me if you're dropping the story. Until fate brings us together again. Theme: Love yourself before loving someone else.