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.
Iruma cannot refuse when 
someone asks him for something.
.لا يستطيع إيروما أن يرفض إن طلب منه أحد شيئًا
Iruma non riesce a dire di no alle richieste altrui.
Iruma não pode recusar quando
alguém pede algo a ele.
Ирума не в силах отказать
на просьбу!