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 see you've been pulling petty 
pranks in my absence, as always.
Has preparado una de tus jugadas 
típicas mientras estaba fuera.
Aprovechando mi ausencia has usado 
una de tus sucias tretas.
Vejo que persiste em pregar
 peças na minha ausência.