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!
I knew you were secretly enraged 
by Kalego's attitude toward you!
علمتُ أنّك كنتَ غاضبًا من
!سلوك كاليغو تجاهك في صميمك
Tief im Inneren warst du also doch
auf Kalego wütend, was?
¡Sabía que por dentro estaba furioso
con Kalego por su mala actitud!
¡Sabía que por dentro estaba furioso
con Kalego por su mala actitud!
Vous deviez vraiment
en avoir après lui !
Sapevo che sotto sotto eri furioso 
con Kalego per il suo atteggiamento!
Eu sabia que você estava com raiva
da atitude do Kalego lá no fundo.
Я знал, что вы наверняка
разозлились на отношение Кальего!