Quick Transmigration: My Host Is a Madman

[Two male leads] [No female lead] [Quick transmigration to different worlds to complete the plot] He had wanted to find a Host who would stick to the plot, but instead he found a lunatic, and the story kept going off track. The System thought it over, then began a plan to redeem its Host. Who knows if it will succeed? First world: [The Regent and His Puppet Emperor] “Whoever dares lay a hand on His Majesty, I will wipe out their entire family.” Second world: Omitted Third world: [The Warlord and the Actor] “I'm sorry we couldn't finish our wedding. In our next life, let's be together again.” Fourth world: [The Noble Vampire and His Timid Blood Slave] “Don't be afraid of me, or I'll rip off one of your arms.” “...” Xu Fei has always believed that only extreme love is true love. Will he change his mind as the story goes on?