After Becoming a Scum Attack [Quick Transmigration]

Qin Luan and his lover entered little worlds for their honeymoon, but accidentally chose the wrong settings. Qin Luan became a scumbag, so now he has to go to every little world and change the plot. (The original characters are all protagonists.) The top spoils the bottom. World 1 (ancient farming): The female lead's lazy, uneducated villainous uncle x a poor but handsome man Qin Luan is the villainous uncle in an ancient farming novel whose female lead is a woman. He's lazy, loves to eat, and gambles. Tiedan is a man from a poor family in the same village, but he's good-looking. He works in his family's cornfield every day, where Qin Luan gets him pregnant. Qin Luan opens his eyes to find his wife covered in dirt, her face three shades darker. She points at her belly and says, “I'm pregnant.” Qin Luan: ??? World 2 (insectoid): A cruel, violent cannon-fodder male insect x a gloomy, vicious female insect Qin Luan is the foil of the protagonist in an insectoid novel, the protagonist's older brother. He's a rare S-rank male insect, extraordinarily gifted and cherished by his family, but he has a cruel, vicious personality. When he reaches adulthood and evolves, his female insect brutally kills him. The protagonist, meanwhile, is only an unloved C-rank male insect who transmigrates into Qin Luan's younger brother. But he's kind to female insects, gentle and good-natured, and not only evolves into an S-rank male insect but becomes everyone's favorite, marrying a whole harem of female insects and reaching the pinnacle of success. When Qin Luan opens his eyes, his wife is swinging a knife at his neck, with enough force to make him see his own neck. Qin Luan: Help!!! World 3 (ancient): A childish emperor who can't court anyone x a top scholar with extraordinary talent and breathtaking beauty, bottom The top scholar is an unparalleled beauty. Emperor Qin Luan falls for him at first sight, but he's an idiot, so he tries to take the scholar by force. The scholar's reputation goes from being a heaven-blessed genius who earned top marks in all six imperial examinations to that of a shameless bed slave willing to do anything to climb the ranks, and he's about to be forced by the dog emperor. After Qin Luan opens his eyes, his furious wife stabs him in the kidney. Qin Luan: ...I'm innocent! World 4 (modern): A vicious gangster cannon-fodder top x an unlucky big shot bottom Qin Luan is the villainous adoptive older brother in a reborn protagonist's face-slapping story. He's useless and worthless, and bullies the protagonist every day. The reborn protagonist humiliates him, and Qin Luan, buried in loan debt, is about to have his hand chopped off, so he decides to run away. He happens to find a big shot passed out, so Qin Luan steals a wallet, only to discover that the big shot has amnesia. Qin Luan thinks the big shot is good-looking, so he lies that he's the man's boyfriend and plans to sell him for money. But when he takes the man home to sell him, the big shot stabs him and two other unlucky guys to death. When Qin Luan opens his eyes, he's already put his key in the door lock. Qin Luan: ... Theme: Obey the law, don't lie, and don't commit domestic violence, or you'll get beaten up