- Country: Japan
- Genres: Action, Drama
- Release: 1965-10-16
- Director: Kenji Misumi
- Writers: Seiji Hoshikawa , Renzaburō Shibata
- Language: Japanese
- Stars: Raizō Ichikawa , Michiko Sugata , Kei Satō , Ryûtarô Gomi , Goro Mutsumi , Rokkō Toura , Kentarô Kudô , Asao Uchida , Ryûzô Shimada , Kōichi Mizuhara
- Runtime: 83 min
- Awards: N/A
- AKA: Sword Devil , A Lâmina Diabólica (Brazil) , Ken ki , Katana maldita (Spain) , Мечът на демона (Bulgaria) , 剣鬼 (Japan) , La lame Diabolique (France, French Republic)
- Plot: Hanpei is an orphan mistreated by other vassals of the manor. He loves flowers and is named the castle gardener. One day in the forest he meets a samurai who teaches him his technique. To conceal the mental illness of lord of the manor, Hanpei is ordered to kill all the spies of the shogun and rebel vassals.
- IMDB:tt0200769
Ken ki Cast · · · ALL
Kenji Misumi
Director
Raizō Ichikawa
Hanpei
Michiko Sugata
Osaki
Kei Satō
Secretery Kanbe
Ryûtarô Gomi
Kyomuzo
Goro Mutsumi
Yuzo
Kentarô Kudô
Asazo
Asao Uchida
Yaichiro
Ryûzô Shimada
Hatta
Kōichi Mizuhara
Gosuke
Rokkō Toura
Kaino
Akihisa Toda
Tadokoro Gaki
Shôsaku Sugiyama
Ikenaga
Yûji Hamada
Hirada
Saburo Date
Toda Shingo
Ryōsuke Kagawa
Shuzen Kagemura
Gen Kimura
Takeshi Tanakura
Hideo Kuroki
Ichirô Takakura
Jun Fujikawa
Jun Katsumura
Yoshitaka Itô