I Save the Female Lead with Poisonous Comforting Words (Quick Transmigration)

The transmigration came out of nowhere. The System bound to Xie Huan tells her that if she wants to stay alive, she has to complete missions and go head-to-head with the male lead to save the heroine, whose life has been destroyed. She thinks of herself as a total slacker and has little confidence that she'll complete her missions. When she enters the world of a campus novel, this is what she tells the System: "Although he's overbearing, domineering, and self-centered, anyone who can become the male lead of a world must have something exceptional about him. We can't underestimate him." The System watches the male lead turn out to be a walk-on with barely any screen time before being eliminated at once: "..." When she enters the world of a supernatural novel, this is what she tells the System: "This male lead is a ghost king with a vicious personality who enjoys playing with people's lives. His power is unfathomable, so we have to be very careful." The System is consumed with worry, then sees the male lead get beaten to a pulp in the final showdown: "..." Male leads: Don't come near me! (They huddle together in terror.) First world: gentle heiress Ye Bing x cool, aloof girl Tang Xiaoli Second world: cheerful online streamer Su Mo x steady, resolute medium Lin Shubai Third world: demonic sect's saintess Tan Xingluo, with hidden grievances x righteous heroine Chi Wanyue, who has lost her martial arts Fourth world: spoiled fake heiress Lu Mingzhu x indifferent real heiress Gu Fei Fifth world: villain's fiancee Shen Qianhu x little chef Yan Zhou Sixth world: white moonlight Liu Xiao x substitute Feng Li [Important Notes] The heroines being saved are all the same person. The protagonist takes the initiative in romance and is always in the winning position. Strictly speaking, though, the two leads dote on each other. There will be a few minor bumps in the romance, but nothing angsty. Theme: Stay positive. There's no hopeless situation in life that can't be overcome.