Dantalion, one of the many candidates for Lucifer's throne, decides to live in the human world an attend William's school and lobby the young noble to choose him as Hell's ruler, but he gets more than he bargained for when William's friend Isaac accidentally summons one of his competitors!
Don't you remember your pretext 
for being here, you idiot?!
¿Olvidaste tu propia presentación?
¿Es que te has olvidado de cómo te presentaste?
Maldito, não se lembra
 sequer do seu álibi idiota?!