The Obsessive Male Supporting Character Won't Stop Chasing Me [Quick Transmigration]

[Quick transmigration + sweet romance + obsessive, possessive love interests + fragmented male leads + one-on-one, devoted couples in every world] An alternate universe. After several worlds' supporting heroines quit and ran off, Xu Wan has no choice but to accept a System mission: take their place and keep the plot moving. The leads' romance has hit a wall? I'll handle it! How about making things difficult for them, or pushing them off a cliff? The villain is getting in the way? How about I join him and steal the spotlight! * The problem is, the System is utterly unreliable. I have to handle the plot myself, fine, but why do I have to personally die when the supporting heroine is supposed to die!? I'm not dying, no way! Stuck with such a disastrous System, she has to rewrite the plot herself and try to save her own skin. But... When the male supporting character holds her in his arms again, Xu Wan is close to tears! Why did nobody tell her that changing the ending meant falling in love with an obsessive, possessive psycho?! World One: scheming, possessive man vs. spoiled, timid heiress Xu Wan: He's a bastard! He'll have me torn apart by horses for the female lead! “Wanwan, don't leave me...” Zhou Mu clings to her and begs pitifully. World Two: gloomy, deaf young man vs. beautiful, wicked widow Xu Wan: He's a little psycho! “I think I've got a fever. Can you stay with me?” Shen Mu tears up pitifully, rubbing against her as he begs for affection. A story about devouring someone, faking your death, then being hunted down by them... Xu Wan: I only made the same mistake every woman makes!! The male supporting characters: ...Ha!