How to live as a villian

One day, the world transformed into a game.'Dungeons' and 'monsters' emerged in the middle of cities, and 'players' who had received the gods' authority appeared.Se-jun Lee, the guildmaster of the Messiah Guild that would bring salvation to the world

I woke up inside of a novel. And in the body of that lout from the Count's family...Also, the main character that utterly destroyed me in the story, Choi Han is coming.