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!
Can't you admire my flawless grades
or spectacular intellect instead?
¿Si quieres elogiarme, por qué no alabas
Si tantas ganas tienes de admirarme, 
¿por qué no lo haces
Não basta admirar minhas notas
 impecáveis ou minha inteligência?