Mairimashita! Iruma-kun: If Episode of Mafia

Welcome to Demon School! Iruma-kun has a fun "what if" side story, and it is getting its own TV anime. This version is called IruMafia Edition in English, or Mairimashita! Iruma-kun if Episode of Mafia in Japanese. NHK announced that the series will start in January 2027. The studio and main staff had not been shared yet when it was announced.

The show is based on a spinoff manga drawn by the artist hiroja. It is built on the world of the original Iruma-kun manga by Osamu Nishi. Publisher Akita Shoten first ran the spinoff in Bessatsu Shonen Champion in September 2023, and later moved it to Weekly Shonen Champion. Kodansha USA publishes it in English.

In the main Iruma-kun story, a kind human boy is taken in by a powerful demon named Sullivan, who treats him like a grandson and sends him to a school for demons. The spinoff keeps that heart but moves everything into a very different setting: a hard, crime-filled city run by gangs.

Here, Iruma grows up with almost nothing in a poor part of the city. Even so, he stays kind and gentle. When he finds an old man who is badly hurt, he shares the only food he has and takes care of him until he is well. The old man is Sullivan, the boss of the Babel Mafia, a powerful crime family. A mafia is a secret group of criminals that works like a big, strict family. Sullivan is so moved by the boy's kindness that he comes back for him and asks Iruma to become his grandson. From that day, the poor boy is the next heir of a huge gang of demon gangsters.

The fun of the story comes from that sudden change. Iruma is honest and polite, and he does not want to hurt anyone. Now he lives among tough, scary mob members, and he must learn how their dangerous world works. Fans of the main series will spot many familiar faces in new roles. The cast list includes Alice Asmodeus, Clara Valac, Ameri Azazel, the strict teacher Kalego Naberius, and Sullivan's loyal servant Opera, all placed into this gangster world.

The tone mixes comedy and action. Much of the humor comes from the gap between a sweet boy and the serious crime family that adores him, which is the same kind of joke that made the main series popular. Themes include adoption, found family, and gang life, but the focus stays light and warm rather than dark.

The original Iruma-kun anime has already had several seasons on NHK since 2019, so this spinoff gives fans a new way to see the characters they know. Viewers who have never watched the main show can also enjoy it, since it tells its own story from the start: a poor boy, one act of kindness, and a whole mafia family that suddenly wants him as its next leader.