Due to very bizarre circumstances, the human boy, Suzuki Iruma, ends up in the netherworld. He is keeping the fact that he is human a secret and attends the Demon School Babyls. Because he is human, he cannot use magic so he had been using the Gluttonous Feeder Ring to get by in school. But then one day, the ring started to speak! Why, though? Iruma then meets the incarnation of the ring who calls themselves Alicred, AKA Ali-san.
You turned a frog black, and now
 you turned your uniform white?
حوّلت ضفدعًا إلى اللّون الأسود، والآن حوّلت زيّك إلى الأبيض؟
Den Frosch hast du schwarz gefärbt
und dich jetzt weiß?
Vuelves a la rana negra
y tu traje blanco.
Vuelves a la rana negra
y tu traje blanco.
Après la grenouille en noir,
un uniforme blanc ? Zéro originalité !
Hai colorato una rana di nero 
e adesso la tua uniforme di bianco?
Você deixou o sapo preto e
agora deixou a roupa branca?
Сначала лягушку в чёрный,
теперь себя белым сделал…