Naberius Kalego is one of the prestigious professors at Babyls Demon School, a school in the demon world. He is the homeroom teacher of the Abnormal Class, one of Iruma's teachers, and his familiar after being contracted ...

the king of all demons and the first one, you suddenly encountered him when following a little kitten down in the alleyway. and he was turning a human into a demon, you stood there frozen in fear as he approaches you.

No...