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.
W-Well, if there have been 
others like me before,
،لو أنّه كان هناك أشخاص مثلي سابقًا
Aber wenn es einen vergleichbaren
Fall wie mich gibt,
Si existiera algún otro ser como yo,
Si existiera algún otro ser como yo,
Bon…
B-Beh, se ci fosse già stato qualcuno come me prima d'ora,
Bem, se já existir algo como eu,
Ну… я буду не против с ней поговорить,
если создания вроде меня уже появлялись.