Welcome to Demon School! Iruma-Kun: Irumafia Edition 3 -- Osamu Nishi, Paperback

Get ready to meet the lovable cast of Welcome to Demon School! Iruma-kun as you've never seen them before!

In this brand-new spinoff of the runaway hit series, Iruma is a dirt-poor but unfailingly cheerful young boy who grows up in a ruthless city slum. One day, Iruma gives an injured old man his last loaf of bread and nurses the stranger back to health--only to find out that the elder gent is none other than Don Sullivan, head of the Babyl Mafia! Soon after, Don Sullivan comes back, whisks Iruma away, and begs the boy to become his grandson. And just like that, Iruma begins his new life as the next in line to lead a gigantic gang of--dare we say--demonic mafiosos!

Author: Osamu Nishi
Publisher: Vertical Comics
Published: 02/17/2026
Pages: 208
Binding Type: Paperback
Weight: 0.81lbs
ISBN: 9781647295158

About the Author
Osamu Nishi began her career as a manga artists in 2011 and had her first serialized story, Hotel Helheim, published in Jump Square magazine in 2014. Her second series, Welcome to Demon School! Iruma-kun, has been running in Shonen Champion magazine since 2017 and gone on to be a hit anime series. The manga version of Welcome to Demon School! Iruma-kun will be the first time that any of her series have been published in English.