Tokyo, Japan – The popular spinoff manga, Welcome to Demon School! Iruma-kun: IruMafia Edition, is set to transition from Bessatsu Shonen Champion to Weekly Shonen Champion on December 11, 2025. This move will also see the series adopt a biweekly serialization schedule.
The announcement has generated buzz among fans, as the change in publication frequency means a more regular, albeit not weekly, release of new chapters for the “IruMafia” storyline.
The “IruMafia Edition” Spinoff
Welcome to Demon School! Iruma-kun: IruMafia Edition presents a unique alternate universe where the familiar characters of the main series are re-imagined in a mafia setting. Instead of a demon school, protagonist Iruma Suzuki finds himself in a ruthless city slum. His life takes a drastic turn when he encounters an injured old man, Don Sullivan, the leader of the Babel Mafia, who subsequently adopts Iruma as his grandson. This premise sets Iruma on a chaotic path as the heir apparent to a powerful, “demonic” crime syndicate.
The spinoff is written and drawn by Hiroja, with original series creator Osamu Nishi supervising the work. The “IruMafia Edition” maintains the charm of the original series while exploring a darker, more action-packed narrative with elements of comedy and adventure. Reviewers have noted that it successfully balances familiar character traits with the new, grittier setting, making it accessible to both new readers and long-time fans.
Weekly Shonen Champion: A New Home
A Prestigious Publication
Weekly Shonen Champion is a prominent Japanese shonen manga magazine published by Akita Shoten. Launched on July 15, 1969, it has been a long-standing fixture in the manga industry, known for serializing numerous popular series over decades. The magazine is published every Thursday. While it has a storied history and is one of the oldest weekly shonen manga anthologies in Japan, its current circulation is behind Weekly Shonen Jump and Weekly Shonen Magazine.
Noteworthy Series from Weekly Shonen Champion
Over its extensive run, Weekly Shonen Champion has been home to many iconic manga series. Some notable titles include Osamu Tezuka’s Black Jack, Go Nagai’s Cutie Honey, and Keisuke Itagaki’s Baki the Grappler. The main Welcome to Demon School! Iruma-kun series by Osamu Nishi has also been serialized in Shonen Champion since 2017 and has inspired a hit anime adaptation. This established connection likely facilitated the transfer of its spinoff.
Impact of the Schedule Change
The move to Weekly Shonen Champion and the adoption of a biweekly serialization mean that fans can expect new chapters of IruMafia Edition twice a month. Previously, the series was published in Bessatsu Shonen Champion, which is a bimonthly magazine. This change will result in a more frequent release schedule for the spinoff. While the original Welcome to Demon School! Iruma-kun continues its weekly run, the biweekly schedule for IruMafia Edition aims to provide a consistent flow of content for its growing fanbase. Fans are anticipating how this new rhythm will impact the pacing and development of the “demonic mafioso” narrative.
