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.
The more I look at it, 
the resemblance is uncanny...
...كلّما نظرت للأمر، التّشابه غير طبيعيّ
Je mehr ich ihn anschaue,
desto mehr ähnelt sie ihm.
Cuánto más me fijo,
más se parece a Iruma.
Cuánto más me fijo,
más se parece a Iruma.
Plus je la regarde, et plus ça saute
aux yeux qu’on dirait Iruma !
Anzi, più la guardo, 
e più la somiglianza è sbalorditiva...
Quanto mais eu olho,
mais parecido fica...
И чем больше вглядываюсь,
тем больше примечаю сходства!