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!
What's the meaning of trespassing 
in my school, you megalomaniac?
¿Qué significa esto?
¿Qué significa esto?
Qual é a razão para invadir
 a minha escola, megalomaníaco?!