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.
He mentioned the ring talking,
 so I was a little worried...
...ذكر حديث الخاتم، لذا كنت قلقًا بعض الشّيء
Ich hab mir schon Sorgen gemacht,
als er meinte, dass der Ring spricht.
Me preocupé cuando dijo
que el anillo hablaba.
Me quedé preocupado cuando dijo
que el anillo hablaba.
Cette histoire de bague parlante
m’a inquiété.
Che bontà!
Como ele disse que o anel
falou, eu fiquei preocupado.
Когда он рассказал про говорящее кольцо,
мне стало не по себе…