# Welcome to Demon School! Iruma-kun: IruMafia Edition 4

Canonical: https://www.bookquiver.com/osamu-nishi/welcome-to-demon-school-iruma-kun-irumafia-edition-4

![Welcome to Demon School! Iruma-kun: IruMafia Edition 4](https://quivercdn.com/covers/vertical-comics/osamu-nishi/welcome-to-demon-school-iruma-kun-irumafia-edition-4_978-16-4729-560-8.jpg?v=2026-05-25%2010%3A28%3A34)

- Authors: [Osamu Nishi](https://www.bookquiver.com/osamu-nishi), [Hiroja](https://www.bookquiver.com/hiroja)
- Language: en_US
- Published: 2026-05-19

## Description

Iruma’s next challenge: go undercover at a black market auction?! Shocking news of a traitor scurrying around within the Babel mafia syndicate puts Kalego on the hunt for the rat. Meanwhile, Iruma...

## Editions

### Welcome to Demon School! Iruma-kun: IruMafia Edition 4

- Publisher: vertical_comics
- ISBN: 978-16-4729-560-8
- Pages: 208
- Published: 2026-05-19
- Language: en_US