After Retirement, I Became a Sickly Villain [Quick Transmigration]

As a top-tier quick transmigration agent, Gu Yuesheng planned to retire once she finished her cannon-fodder mission in this world. Who could have guessed that the Main God would need her in an emergency? As a top-tier quick transmigration agent, she was assigned an important role: a yandere villain. Her only requirement was to do everything in her power to save the world chain. During special circumstances, she was allowed to go out of character. [World One: I Am the Rules Themselves [Infinite]] Unhinged yandere villain bottom VS gentle, healing older-sister cannon-fodder top Opening: Gu Yuesheng: “I’m a madwoman everyone fears. My mission is to assassinate Liao Jin, president of the Dawn Guild. I won’t hesitate to use her beloved junior as bait.” Ending: Gu Yuesheng: “...?” Weren’t we supposed to use the junior? How did the junior turn the tables and start flirting with me? [World Two: [Apocalypse]] Green-tea yandere junior villain bottom VS cool, aloof senior heroine top Opening: Gu Yuesheng: “I’m a delicate little green tea...” [World Three] Obsessive yandere school bully villain bottom VS scheming, aloof academic ace male lead top Theme: Be a conscientious and dedicated citizen