75
Where to Watch
Region
Prices last updated October 14, 2026. Pricing and availability may vary by region.
powered by JustWatch
About
Doctors Kazamatsuri and Onizuka are geneticists researching cures on diseases such as AIDS and cancer by performing experiments to strengthen the human body. The test subject is Shin Kazamatsuri, motorcycle racer son of Doctor Kazamatsuri. Unknown to them, their operation is funded by a syndicate group, who plan to use this research to have the bodies of men strengthened for their own gain—they have already been experimenting in the field of cyborg soldiers, to a less-than-successful attempt. However, they did not count on Onizuka's own secret ambitions; the mad Onizuka wanted to create a new species, by fusing a grasshopper's DNA with the test subject's, in order to start a new civilization and be their god. He has tested on himself, but seems to be having greater success with Shin.
DVD / Blu-ray
Apr 8, 2025
Director
Writers
Producers
Studio
Toei Company, Ishimori Production
Original Title
真・仮面ライダー序章
Original Language
Japanese
Cast
Full credits →S
Shin Ishikawa
Shin Kazamatsuri / Kamen Rider Shin
A
Akira Ishihama
Daimon Kazamatsuri
K
Kiyomi Tsukada
Sarah Fukamachi
D
Daijirō Harada
Iwao Himuro
A
Andre
Goushima / Transformed Goushima / Cyborg Soldier Level 2
M
Masanobu Takashima
Takuya Yuuki
M
Masaki Terasoma
One of the Organization Leaders
S
Shotaro Ishinomori
Man with Listening Device in Beginning
