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.
Then when I reach Dalet, 
you should grow even more!
!فحينما أصل إلى رتبة داليت، ينبغي أن تكبر أكثر
Wenn ich den Dalet-Rang erreiche,
cuando llegue a Dalet
cuando llegue a Dalet
il suffit que je passe Dalet
Quando raggiungerò il Dalet,
Quando o meu ranque subir para Dalet,
você vai crescer ainda mais, Ali-san!
значит, едва я стану «Далетом»,
ты, дядя Али, обретёшь новый талант!