My Boyfriend from a Parallel World Has Turned Evil

[The author has signed a contract, but this story is not authorized for publication here, so please check out the author's other contracted works, too!] Amber's boyfriend has transmigrated here from a parallel world. Not only has he turned evil, he's also trying to replace her boyfriend in this world. He says with conviction, "One Qin Feng is enough for this world. I'm far more perfect than all the other Qin Fengs, so the you in every world should belong to me." Amber is stunned for a moment, unsure whether to yell at him or find somewhere to hide, so she just kicks him. But the boyfriend from the parallel world has clearly taken on the role of a villain, and swears he'll have her. Theme: May there be no villains in the world.