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!
As prefect, I'm held responsible
when people break the rules!
¡Las infracciones de los estudiantes son 
responsabilidad de los alumnos supervisores!
¡Las infracciones de los estudiantes son 
responsabilidad de los alumnos supervisores!
Como monitor, sou responsável 
por aqueles que quebram as regras!