← all stories other 1 sources · May 17

Shunta Sono Cast as Dark Hero Kamen Rider Mugen in Zetts Summer Movie

Sono's casting as a dark hero cousin to an established Rider expands the Zetts family drama while marking the first Kamen Rider role for the M!LK member, who trained in swordsmanship for the part.

Reporting from 1 sources: Eiga Natalie.

Shunta Sono Cast as Dark Hero Kamen Rider Mugen in Zetts Summer Movie

M!LK member Shunta Sono will appear in the July 24 double-feature film "Kamen Rider Zetts & Super Space Sheriff Gavan Infinity W Hero Summer Movie 2026" as Shuma Kumon, who transforms into Kamen Rider Mugen. Kumon is the cousin of Nox and uses a sword in combat. Sono received swordsmanship training and advice from fellow M!LK member Jutaro Yamanaka, who previously appeared in Kamen Rider Gotchard.

Shunta Sono, a member of the dance-vocal group M!LK, will appear in the upcoming summer movie for the tokusatsu series Kamen Rider Zetts. He plays Shuma Kumon, a young elite serving as Chairman of the National Public Safety Commission who secretly remakes the real world into a daydream realm and controls people's consciousness. Kumon loads the Daydream Capsule into the Mugen Driver to transform into Kamen Rider Mugen, a dark hero who opposes protagonist Manatsu Kume.

Kumon is the cousin of Nox, played by Yuki Furukawa, and schemes to draw him in. Sono, who practiced swordsmanship for the role, said he discussed the transformation pose extensively with the director. He also received advice from M!LK member Jutaro Yamanaka, who appeared in Kamen Rider Gotchard. The double-feature film, pairing Kamen Rider Zetts with Super Space Sheriff Gavan Infinity, opens July 24.

Synthesized by Yomimono from the 1 cited source below, including Japanese-language reporting where cited, then editorially reviewed before publishing.

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