The highly anticipated fourth season of the anime “Welcome to Demon School, Iruma-kun” (Mairimashita! Iruma-kun) has officially unveiled its main visual and a compelling teaser trailer, setting the stage for its premiere in April 2026. The new season promises to delve into the “Music Festival Arc,” featuring Iruma Suzuki and his Abnormal Class as they face a significant challenge.
The reveal came during a special event and was subsequently announced by Crunchyroll, which will stream the series internationally across various regions. This news has ignited excitement among fans, particularly with the teaser’s focus on the long-awaited introduction of the 13th member of the Misfit Class, Soi Purson.
The Music Festival Arc Takes Center Stage
The upcoming fourth season is confirmed to adapt the fan-favorite “Music Festival Arc” from Osamu Nishi’s original manga. This arc focuses on the unity and musical prowess of the Abnormal Class, challenging them to come together for a high-stakes competition. The narrative is expected to showcase new dynamics among the classmates and further Iruma’s growth within the demon world.
Unveiling the Main Visual
The newly released main visual for Season 4 vividly captures the essence of the “Music Festival Arc.” It features the thirteen students of the Abnormal Class in dazzling costumes, bathed in stage lights, embodying the spirit of their upcoming performance. A prominent aspect of the visual is its highlight of Iruma Suzuki, poised to take on this new musical challenge.
Teaser Trailer Introduces Soi Purson and Trumpet Motif
Accompanying the main visual, a teaser promotional video has also been released, generating significant buzz. The teaser notably features a memorable trumpet motif, hinting at the musical theme of the arc. Crucially, the trailer also teases the formal introduction of Soi Purson, the enigmatic 13th and final member of the Misfit Class. Purson, known for his desire to “never stand out,” has largely avoided interaction, and the teaser offers a glimpse into how he will respond to Iruma’s earnest invitation to join the class on stage for victory.
Returning and New Production Staff
Bandai Namco Pictures will continue to handle the animation production for the fourth season. Makoto Moriwaki, who has been the director since Season 1, will now serve as chief director, with Ayaka Tsujihashi stepping in as the director for this season. Other returning key staff members include Kazuyuki Fudeyasu for series composition, Yumiko Hara as character designer, and Akimitsu Honma as the music composer.
Confirmed Voice Cast
The main voice cast is expected to reprise their roles for Season 4. Ayumu Murase will return as Iruma Suzuki, joined by Ryohei Kimura as Alice Asmodeus, Ayaka Asai as Clara Valac, Saori Hayami as Ameri Azazel, and Daisuke Ono as Kalego Naberius.
Premiere and International Streaming
“Welcome to Demon School, Iruma-kun” Season 4 is scheduled to premiere in Japan in April 2026 on the NHK Educational channel. Crunchyroll has confirmed its plans to stream the new season internationally across North America, Central America, South America, Europe, Africa, Oceania, the Middle East, CIS, and India, ensuring global accessibility for fans.
Commemorative Event in March 2026
To celebrate the upcoming broadcast, a one-day commemorative event is planned for March 14, 2026, at Theater 1010. This fan-focused event is set to feature appearances by prominent voice cast members, including Ayumu Murase, Ryohei Kimura, Ayaka Asai, Daisuke Ono, and Mitsuki Saiga (Opera). Additionally, original manga creator Osamu Nishi will make a special appearance. The event program will include behind-the-scenes stories from recording sessions, production anecdotes from staff, new updates, and an exclusive live reading performance.
The Enduring Popularity of Iruma-kun
Osamu Nishi’s fantasy manga series, “Welcome to Demon School! Iruma-kun,” began serialization in Akita Shoten’s Weekly Shōnen Champion magazine in March 2017 and continues to be ongoing. The manga has achieved significant success, with over 16 million copies in circulation. The anime adaptation has similarly garnered a dedicated fanbase since its first season premiered in October 2019, followed by a second season in April 2021 and a third in October 2022. Crunchyroll has consistently streamed the entire series with English subtitles and dubs. The narrative follows Suzuki Iruma, a 14-year-old human boy who unexpectedly finds himself in the demon world, adopted by the powerful demon Sullivan, who is also the chair-demon of his new school, Babyls. Iruma’s journey to survive and thrive while keeping his humanity a secret, often winning over adversaries with his innate kindness, forms the core of the beloved series. The renewal for a fourth season underscores the franchise’s strong and continued appeal.
