Suzuki Iruma is too nice and just doesn’t know how to say no. One day, he somehow gets dragged into the netherworld where the demons live. He arrives at the great demon Sullivan’s mansion where he is asked to do the unthinkable... and ends up becoming Sullivan’s grandson! He is quickly enrolled into the Demon School Babyls where Sullivan serves as chair-demon. Iruma begins his super exciting school life at demon school while trying to conceal the fact that he’s a human!
Scream for us, for we are demons
اصرخوا لأجلنا، لأننا شياطين
Schreit es heraus! Wir sind die Dämonen!
Griten, pues somos demonios 
Gritad, pues somos demonios
Humains, pauvres fous !
Scappa e grida di terror perché siam demoni
Grite por nós, somos demônios
Бойтесь нас, людишки, ведь все мы демоны!