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!
You're the one dwelling on
the sentimental, fallen angel!
¡Entonces tú eres el más 
patético, ángel caído!
¡Entonces tú eres el más 
patético, ángel caído!
É você quem se afoga em 
sentimentos, anjo decadente!