From the Start, I Transmigrated into a Eunuch (Quick Transmigration)

Su Qixin was kicked by the Bureau into a world full of crazies. Every big shot he meets has something wrong with him, and Su Qixin keeps transmigrating into unlucky characters who don't survive past three chapters. Goal: Protect his kidneys, hands, feet, and, most of all, make sure he doesn't end up a eunuch, lol. Only later does he realize: His blood, flesh, scent, body, eyes, nose, mouth, every last part of him is irresistible to certain people. These people include, but aren't limited to, obsessives, tyrants, villains, and darkened chosen ones. --Once these people discover what makes him special, there will be nowhere for him to run. Protagonist: Wait, what do I do now that they already know? World One (complete): *He transmigrates to ancient times as a fake eunuch in the imperial palace. The emperor insists on taking him by force. He escapes once, only to be caught again. The emperor chases, he runs; as long as he's alive, he'll keep running!* World Two (complete): *In a modern ABO alternate world, he's the only pure-blooded human. He never expects to get entangled with an overbearing Alpha and is forced to differentiate as an Omega. He runs once, gets caught again, and never escapes after that!* World Three (complete): *He's targeted by a minister with a phobia of women. The minister takes him by force, and then discovers there's a baby in his belly. He runs once, gets caught again. The minister chases, he runs, and he can't get away even if he had wings.* World Four (complete): *A gentle Crown Prince has severe mysophobia around everyone else, but an unusual touch-starvation when it comes to him. He drags him into bed every day. After running away while pregnant and staying gone for years, he's caught again.* World Five (complete): *A wealthy young master has severe total color blindness, and the protagonist is the only "color" in his life. He takes the protagonist by force, leaving him nowhere to run.* The protagonist is timid, cowardly, selfish, insecure, unimpressive, unintelligent, unbrave, and weak. He's inexplicably irresistible to certain people, among many other flaws. [I know you're foolish, frivolous, and empty-headed, but I love you. I know your ambitions and your ideals. You're self-serving and vulgar, but I love you.] A beautiful but deeply flawed bottom who'll have you hooked, and a top who can't live without him. Thanks for your support! Additional notes: 1. In some worlds, the protagonist thinks things are peaceful, when in fact undercurrents are swirling. In others, he thinks his boyfriend is perfectly normal, when the obsession is actually buried deep inside him. Sometimes the protagonist discovers his partner's true nature and thinks he can escape, only to be caught again and again. 2. Both are each other's only partners; one-on-one. The pregnancy storyline begins in the second world. Also, if a story where the leads end up together counts as a happy ending, then this one has one, because the protagonist can never escape. 3. There will be angst as well as catharsis. You know the deal with being taken by force: he can't get away, not at all. The pursuer chases, the pursued runs, and he can't escape even if he had wings. Theme: Cherish life and never give up.