With less than a month to go, this latest cast additions for Kamen Rider MY-TH are really going to the Sheep and Dogs! Joining the cast will be Rurouni Kenshin: Final Chapter Part I – The Final’s Joey Iwanaga as Vanken/Kamen Rider Vanken, and Ohsama Sentai King-Ohger’s Kasumi Hasegawa as Mutn/Kamen Rider Mutn.
New Cast:
Mutn/Kamen Rider Mutn– Kasumi Hasegawa
Kamen Rider Mutn is the Sheep of the Zyunishi Doumei. Though Mutn is a stylish sleeping beauty, her inner fighting spirit is like a powerhouse. Don’t make her angry, or else she will hunt you down like a madman, even in the scorching heat or freezing cold!
Vanken/Kamen Rider Vanken– Joey Iwanaga
Kamen Rider Vanken is the dog of the Zyunishi Doumei.
With his keen sense of smell that can sense evil and fangs that won’t let go, he’ll definitely protect you!
Who are the Zyunishi Doumei?
The Zyunishi Doumei, also known as the Twelve Animal Signs, is an organization of zodiac-based Kamen Riders dedicated to fighting the Inexplicable— a mysterious race of supernatural monsters and entities tied to unexplained phenomena like sudden disappearances and strange audio disturbances. Originating from a century ago, each of the members have re-awoken in the present day in order to protect humanity from their mortal enemy.
Leading the Zyunishi Doumei is Kamuri Minetaka (who can transform into Kamen Rider MAOU), who has risen from slumber in the modern era, transcending 100 years. His goal of beating the Inexplicable also shared by Sora Otosumi— yet Kamuri’s irreconcilable sense of justice clashes fiercely with Sora. He transforms into Kamen Rider Maou in order to keep My-Th in check. Taking the classic game of Cat vs. Mouse to a whole new level.
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Joey Iwanaga and Kasumi Hasegawa join the cast consisting of Ikuho Akiya (Sora Otosumi/Kamen Rider MY-TH), Riko Horikawa (Yuna Mizuki), Hayate Ataka (Tatsuomi Asao), Keisuke Higashi (Kamuri Minetaka/Kamen Rider MAOU), Shunya Kaneko (Tigre/Kamen Rider TIGRE), Nanako Ando (Datt/ Kamen Rider DATT), and Kosei Tsubokura (Jyao/ Kamen Rider JYAO).
Naruhisa Arakawa will be returning to helm this new series as the head writer. This will be his first return to the franchise in 26 years since Kamen Rider Kuuga. The staff consists of Shojiro Nakazawa serving as the Pilot Director, and Satoshi Fujita as the Action Director. They will be joining Takehiro Ohkawa (General Producer, TV ASAHI), and Producers, Keisuke Shibataka (TV ASAHI), Naomi Takebe (Toei), and Yousuke Minato (Toei). With the original story by Shotaro Ishinomori. On July 26, it was announced that EXILE TRIBE group THE RAMPAGE would perform the opening theme song, titled “One Shot.”
Kamen Rider MY-TH (仮面ライダーマイス) is the eighth Reiwa-era series, following predecessors such as Zeztz, Gavv, and Geats. Created by Shotaro Ishinomori, the Kamen Rider franchise (仮面ライダーシリーズ) launched its first television series in April 1971, sparking the Henshin Boom and spawning sequels, films, manga, and anime that shaped Japanese superhero storytelling. Fans can currently watch Kamen Rider Zeztz on TV Asahi’s Super Hero Time block Sundays at 9 AM JST, with Western audiences streaming episodes on Tokushoutsu’s YouTube channel. Kamen Rider MY-TH arrives on TV Asahi on September 6th, 2026.
The series follows Sora, who presides over the Mizuki household in their secret mission to defeat the Fukashigi. But the Twelve Animal Signs, awakening from a century-long sleep, have also dedicated themselves to this task. And somehow, their leader is a cat. The battle between cat vs mouse begins!
Source: Kamen Rider MY-TH (TV ASAHI) Official Website
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