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!
I suppose pretty dolls make the best puppets.
Eres un muñeco lindo que puede 
servir como marioneta.
No eres más que un precioso muñeco 
que hace de marioneta.
Creio que de bonecas bonitas não 
se fazem os melhores fantoches.