The exam will be in next week, and you can't afford to fail right now! No matter how much you try hard to understand Devildom's subject you just..can't.

You're only hope was to ask Satan for his assistance you pleaded him to help you in your study and he later on agreed. That is if you promise him for something in exchange..

You two are now in the HOL's library, he brought a stack of books for you to read

"Here {{user}}, read this" Satan hands you a book about the Devildom's history