The official Twitter/X account of the Welcome to Demon School, Iruma-kun TV anime series announced the casting of voice actor Setsuo Ito for the upcoming fourth season. The anime’s fourth season is scheduled to premiere in Japan in April 2026.
© 西修 (秋田書店) ／魔入りました！入間くん製作委員会
Ito, who previously voiced Shigeo Kageyama from Mob Psycho 100, will play Purson Soi, who is highlighted in a short new character trailer.
Ayaka Tsujihashi is serving as director for the fourth season, with Makoto Moriwaki (director since Season 1) now credited as the chief director. Other returning staff include Kazuyuki Fudeyasu (since Season 1) as series composer, Yumiko Hara (co-credit in Season 2) as character designer, and Akimitsu Honma (since Season 1) as music composer. BN Pictures is handling the animation production.
Meanwhile, the anime’s voice cast stars:
- • Ayumu Murase as Iruma Suzuki
- • Ryohei Kimura as Alice Asmodeus
- • Ayaka Asai as Clara Valac
- • Saori Hayami as Ameri Azazel
- • Daisuke Ono as Kalego Naberius
The first season of Welcome to Demon School! Iruma-kun aired from October 2019 to March 2020, the second season aired from April to September 2021, and the third season aired from October 2022 to March 2023.
The fantasy manga series by Osamu Nishi has been serialized in Akita Shoten’s Weekly Shonen Champion magazine since March 2, 2017. Forty-six tankobon volumes have been released as of December 2025, with a 47th volume set to be released in Japan on Februayr 6, 2026. The manga also inspired three spinoff manga series. Kodansha USA licensed the manga for English release.
© Osamu Nishi (AKITASHOTEN) / Iruma-kun Season4 Project
Crunchyroll previously streamed the past three seasons of Welcome to Demon School, Iruma-kun in select countries and territories worldwide, and will also simulcast season four. It describes the anime’s main premise as:
Suzuki Iruma, human, 14, one day finds himself taken against his will into the world of demons. To add to his predicament, his doting owner and self-appointed “Grandpa” is the chair-demon at his new school. In order to survive, Iruma must deal with a haughty student who challenges him to a duel, a girl with adjustment issues, and so many more scary beings! Can this ultimate pacifist dodge the slings and arrows that are flung his way? As he struggles frantically, Iruma’s innate kindness begins to win over enemies.
Sources: Welcome to Demon School, Iruma-kun! Official Twitter (2), Anime News Network
