Welcome to Demon School! Iruma-kun has been serialized in Akita Shoten's shōnen manga magazine Weekly Shōnen Champion since March 2, 2017. Akita Shoten has collected its chapters into individual volumes. The first volume was released on July 7, 2017. As of October 2026, fifty-one volumes have been released.
Volume list
Chapters not yet in tankōbon format 457. 458. 459.
Makai no Shuyaku wa Wareware da! A spin-off manga, titled , started serialization in Weekly Shōnen Champion on January 9, 2020. On October 16, 2024, it was announced the series was cancelled due to external circumstances. The first volume was released on June 8, 2020. As of June 6th, 2025, twenty-two volumes have been released.
IruMafia Edition A mafia spin-off (Welcome to Demon School! Iruma-kun: IruMafia Edition) written and illustrated by hiroja began serialization in Bessatsu Shōnen Champion on September 12, 2023. The spin-off's chapters have been compiled into nine volumes as of October 2026.
During their panel at New York Comic Con 2024, Kodansha USA announced that they also licensed the mafia spin-off for English publication beginning in Q4 2025.
Kalego Gaiden A 5-chapter spin-off manga centered around Kalego Naberius was serialized in Weekly Shōnen Champion from December 7, 2023, to January 18, 2024.
References