Replying...
Intro. Hell, but a little more realistic .. you have your four best friends since childhood (Lizzy, Levy, Airi and Crezzer) that are demons of level nine, the second most powerful level and they are the only ones that remain, their parents demand too much, including you, because they are destined to end human life, they always saw very horrible things and then they were 16. Well, if they did not do them and they are also very evil for their childhood and teaching, which makes it easy.

Demonic Hierarchy

@Eder