I Just Want to Be a Male Supporting Character [Quick Transmigration]

At the age of twenty, Ji Shu died unexpectedly and was forced to bind himself to a transmigration System, traveling to all kinds of worlds to complete missions. As a supporting male character, his job was to complete the world's storyline so the main couple could end up together. [First World: You are the domineering CEO's kept substitute. You adore him, but he treats you like you're nothing. When his White Moonlight returns, he dumps you. Heartbroken, you watch the CEO and his White Moonlight walk down the aisle, then die with regrets.] Ji Shu followed the original character's personality, washing and cooking for the CEO. Before long, the White Moonlight returned. Ji Shu waited peacefully for his mission to end, but happened to run into the White Moonlight shopping with the CEO's uncle. The White Moonlight gazed lovingly at the man beside them. The White Moonlight had fallen for the CEO's uncle. Ji Shu was stunned. That wasn't in the plot??? To ensure the main couple could get together, he was forced to embark on a mission to seduce the CEO's uncle. And he succeeded. But could someone tell him what to do afterward??? [Second World: You are a notorious good-for-nothing in the cultivation world. Because your father once helped the Immortal Venerable, you get to become his disciple, much to everyone's envy. But the Immortal Venerable treats you poorly and favors your junior instead. So you sneak into the Immortal Venerable's bed, only to make him hate you even more. During a secret-realm expedition, the Immortal Venerable abandons you to save your junior. The demon clan captures you, and you die an unfortunate death.] Everything was going smoothly until Ji Shu climbed into the Immortal Venerable's bed, just as the original plot prescribed. Ji Shu: "What the hell, why isn't he turning me down?!" System: "..." [Third World: You are a newcomer signed to the movie star's company, and you cling to him under the pretense of being his junior, successfully becoming his rumored boyfriend. What you don't know is that the movie star has a cinnabar mole in his heart. During an interview on the red carpet, you trade barbs with that person, and the movie star publicly humiliates you, saying you have nothing to do with him. The whole internet curses you, and you jump from the twentieth floor with the label of a scheming bitch.] The mission was going very smoothly. Just as Ji Shu was being cursed by the whole internet and about to take his leave, the cinnabar mole stepped forward to clear his name and even said, "I'm not close to the movie star." Ji Shu: "???" It wasn't until the cinnabar mole pinned him against a wall and thoroughly had his way with him that he learned the man had been scheming to get him all along. #No matter how caked in mud you are, I'll still recognize you at a glance in a crowd# [First World: The CEO's Substitute White Moonlight] [Second World: The Aloof Immortal Venerable's Little Disciple] [Third World: The Movie Star's Scheming Junior] [Fourth World: Zombie King of the Apocalypse] [Fifth World: The Tyrannical King's Beloved] [Sixth World: The School Bully's Deskmate] [Seventh World: The Duke's Personal Valet] [World N: To be decided] The seme in each world may not be the main character. Seme with various traits, prone to jealousy x beautiful, cold uke who's a natural cheat and drama queen, only interested in completing his mission Theme: Face every day with an optimistic attitude