Welcome to Demon School! Iruma-kun (魔入りました！入間くん Mairimashita! Iruma-kun, “Enrolled Demon Iruma!”) is a Japanese manga series written and illustred by Osamu Nishi. It has been published in Akita Shoten’s manga magazine Weekly Shōnen Champion. The First chapter was published on March 2nd 2017 and has been collected in thirteen volumes. An anime series adaptation by Bandai Namco Pictures premiered has premiered on October 5, 2019