Cosmo's Paradise

This is a Dandy's world au called Cosmo's Paradise, it is about Cosmo who gets dared to grab the oldest book in the library in garden view in truth or dare, Cosmo takes the Dare... and when he goes back to his room for night time, he can't stop reading it. And ends up adopting a new religion, and later in the day he asks multiple people to join his religion. Then, soon he does a ritual in his room.. and becomes a angel, but the thing is.. sometimes the angel takes over and starts hurting everyone as Cosmo is stuck in his mind watching everything, thinking it's not real.. but he can control himself at certain times.