The first theatrical film project for Mairimashita! Iruma-kun has been announced. The news was revealed during the special event Devil’s Party 2 on September 27, 2026, along with a special video.
About the Series
Mairimashita! Iruma-kun is a demon-world school comedy about Suzuki Iruma, a human boy who becomes the grandson of a great demon and attends the demon school Babylus. Nishi Osamu’s manga began serialization in Akita Shoten’s Weekly Shonen Champion in March 2017. The comics series has surpassed 20 million cumulative copies in circulation as of March 2026, and it will mark its 10th anniversary in 2027.
The TV anime’s first season began in October 2019. The fourth season aired from April 2026 and ended with its final episode on September 26, 2026.
Announcement at Devil’s Party 2
The special event Devil’s Party 2 was held on September 27 at Nihon Kogakuin Arena. Cast and staff, including Murase Ayumu, who voices Suzuki Iruma, and original creator Nishi Osamu, gathered with fans. Near the end of the event, a video opened with a ‘major announcement,’ and the words ‘theatrical film project launched’ appeared on screen.
The surprise prompted loud cheers from the audience as the first theatrical film project in the series was revealed. A special video was also released.
Murase Ayumu and Nishi Osamu React
Following the announcement, Murase Ayumu commented, ‘What’s going to happen!? I think it will be an amazing development. I’m looking forward to it myself, so I definitely want everyone to come and see it.’ He added, ‘First, I’ll do my best during recording, so please look forward to it!’
Nishi Osamu said, ‘I’m just looking forward to it. I’m told by people around me not to say anything, so I can’t say anything (lol).’ The author also commented, ‘We’re working hard, so I hope you’ll wait for it.’
With Mairimashita! Iruma-kun approaching its 10th serialization anniversary in 2027, attention is focused on the future of its first theatrical film project.
Home Video and Streaming
A Blu-ray BOX for the fourth season, listed as an Amazon.co.jp-limited edition, includes a bonus set of 15 L-size visual sheets and is priced at 42,900 yen at the time of publication.
The fourth season of the Mairimashita! Iruma-kun anime is currently streaming on various distribution platforms.
Staff
| Role | Name |
|---|---|
| Original Work | Nishi Osamu (Akita Shoten’s Weekly Shonen Champion) |
| Chief Director | Moriwaki Makoto |
| Director | Tsujihashi Ayaka |
| Series Composition | Fudeyasu Kazuyuki |
| Character Design | Hara Yumiko |
| Art Director | Yoshida Hitomi |
| Color Design | Takaya Chie |
| Director of Photography | Chiba Hiroyuki |
| Music | Honma Akimitsu, Sekimukai Yayoi |
| Sound Director | Gouda Hozumi |
| Animation Producer | Sawada Saya |
| Animation Production | BN Pictures |
| Opening Theme | Penthouse ‘Hifumi’ |
| Ending Theme | CANDY TUNE ‘Super Yuushou Chuun!’ |
Cast
| Character | Voice Actor |
|---|---|
| Suzuki Iruma | Murase Ayumu |
| Asmodeus Alice | Kimura Ryouhei |
| Valac Clara | Asai Ayaka |
| Sabnock Sabro | Satou Takuya |
| Shax Lied | Yamaya Yoshitaka |
| Andro M. Jazz | Kakihara Tetsuya |
| Crocell Kerori | Touyama Nao |
| Ix Elizabeth | Hondo Kaede |
| Caim Kamui | Kajiwara Gakuto |
| Agares Picero | Yoshinaga Takuto |
| Gaap Goemon | Oukawa Genki |
| Allocer Schneider | Toki Shunichi |
| Purson Soi | Itou Setsuo |
| Azazel Amelie | Hayami Saori |
| Naberius Kalego | Ono Daisuke |
| Sullivan | Kuroda Takaya |
| Opera | Saiga Mitsuki |
| Amduscias Poro | Koyasu Takehito |
| Leviathan Reiji | Uchida Yuuma |
| Belial Beli Rasberry | Matsuoka Yoshitsugu |
| Garry | Matsuoka Misato |
© Nishi Osamu (Akita Shoten) / Mairimashita! Iruma-kun 4th Series Production Committee
