April 2026 has been announced as the premiere date for Welcome to Demon School! Iruma-kun Season 4.

The new season was announced last November.

Welcome to Demon School! Iruma-kun is based on Osamu Nishi’s manga, which began in 2017 in Akita Shoten’s Weekly Shonen Champion and will release its 45th volume on October 8, 2025 JST. The previous seasons premiered in 2019, 2021, and 2022. 

Kodansha USA describes the manga’s premise as:

Staff (as of Season 3)

• Director: Makoto Moriwaki (since Season 1)
• Series composer: Kazuyuki Fudeyasu (since Season 1)
• Character designer: Yumiko Hara (co-credit in Season 2)
• Animation production: BN Pictures

Cast (as of Season 3)

• Ayumu Murase as Iruma Suzuki
• Ryōhei Kimura as Alice Asmodeus
• Ayaka Asai as Clara Valac
• Saori Hayami as Ameri Azazel
• Daisuke Ono as Kalego Naberius

Source: @nep_irumakun