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!
When you see a bunch of stuff piled up, 
don't you just wanna go "kaboom"?!
،عندما ترى الكثير من الأمور مكوّمة
Willste nicht auch explodieren,
wenn so viele Sachen da sind?
¡¿A veces no te dan ganas
de hacer estallar las cosas?!
¡¿A veces no te dan ganas
de hacer estallar las cosas?!
C’est génial d’exploser
une pile de trucs, pas vrai ?
Quando vedi una pila di roba,
Quando vê um monte de coisa empilhada,
Когда вещи навалены,
так и хочется бахнуть!