Wait, Who Ever Saw a Cool, Top-Tier Alpha Flirt with a Beta?

[ABO, two male leads, both sexually inexperienced, seme-focused, a cold and unhinged alpha seme + a sweet, devoted beta uke who later becomes an omega] [Interstellar family, everyday flirting + light political intrigue] Nangong Lie transmigrated. He thought he’d become a high-and-mighty alpha with overwhelming power, only to discover that he had less than two years to live and was destined to be cannon fodder. The beta bodyguard at his feet, covered in blood, was his only lifeline. And his predecessor had been a real piece of work, doing all kinds of horrible things to the poor bodyguard... Tsk, tsk, tsk. Nangong Lie calmed down, tended the bodyguard’s wounds, carefully won the young guard’s trust, and tried to flirt with him, cough, I mean, have a heart-to-heart... He only wanted to latch onto someone powerful and stay alive, but the sweet beta started developing a whole new persona. He fended off omegas who tried to get close to Nangong Lie, and when he got drunk, he would act spoiled, beg for affection, and ask to be held? Ren Bai: You want an omega, don’t you? I can be one too...