Even a Chuunibyou Wants to Be a Villain

[Synopsis] A chuuni boy transmigrates into the power fantasy novel he has been following, The Heavenly Defiance. But he doesn't become the male lead. Instead, he becomes the fat villain BOSS Lian Yunhan, who brutally torments the male lead early on, causing him to turn evil, only to be brutally tormented by him later and die without a complete corpse. He also gets a System. System: Host, welcome to the Peerless Villain Cultivation System. Lian Yunhan: Change that for me. System: ? Lian Yunhan: Make it the Peerless Emperor System. Otherwise, how could it possibly suit my brilliance and might? System: ... System: Host, your mission is to bully the male lead, humiliate him, and trample on him until he hates you to the core. Lian Yunhan: No, my mission is to unite the world! System: ... Lian Yunhan refuses to do a single mission the System gives him. His whole thing is being rebellious. System: Despair! And whenever the male lead gets an opportunity, Lian Yunhan grabs every last one. His whole thing is taking it all for himself. System: Utter despair! Lian Yunhan takes the male lead in as his underling, making him serve tea, cook meals, warm his bed, and wait on him hand and foot. System: ... Huh? Lian Yunhan thought the male lead was a meek little victim who would take anything lying down. He never expected that years later, the male lead would become a domineering demon lord. Lian Yunhan flips the table: Where's my obedient little sidekick? The male lead holds his chin and softly kisses him. "Right here, my young master." There was once a boy who was chuuni, narcissistic, cold, and unreasonable. Later, the male lead pinned him down. Reading Guide: Black-lotus, green-tea, possessive top x gorgeous, narcissistic, tsundere bottom. Mpreg. Other completed works with good stats: Quick Transmigration: The Flirtation Fiend, I Want to Know Who Harmed Me, The Male Supporting Character Collection System, Pinocchio and Bluebeard, Readers Who Transmigrate into Scum-and-Slag Novels, You Can't Blame Me for Getting My Heart Broken, and The Male Lead Bent Again. Theme: To take saving all living beings as one's duty, and protecting world peace as one's creed.