A Demon Teacher's Guide to Passing as Human [Anime Crossover]

Naberius Kalego, an eighth-rank demon and renowned teacher at Babyls Demon School. Naberius comes to the human world for a sabbatical for personal reasons. He picks up books such as How to Become a Proper Human and A Guide to Becoming Human, and studies how to pass himself off as a human. But... Why does the place where he works keep exploding, and why is there a strange human in bandages inside? Why does every company he switches to have a short, spiky-haired kid? Why is his third workplace full of troublemaking students who call themselves the Vongola? Why is there a day when everyone starts calling him... a hero? Naberius Kalego opens the book Sullivan gave him. On the back is a line of tiny print: A Guide to Becoming an Excellent and Proper Hero. Author: Suzuki Iruma. Naberius Kalego, who somehow became a hero: (╯°□°)╯︵ ┻━┻ Theme: A demon teacher on sabbatical grabs the wrong script and ends up becoming the hero who saves the world in the human realm