The Kanto Brothers' Code of Honor (関東兄弟仁義 仁侠) is a 1971 film directed by Buichi Saitō. It is the ninth and last film in the Duty of Brotherhood series.

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Main Cast: Saburo Kitajima, Gorō Ibuki, Kyosuke Makita, Hiroko Sakuramachi, Nobuo Kaneko, Ryōji Hayama, Hiroshi Nawa, Bunta Sugawara

Director: Buichi Saitō

Writer: Kōji Takada

Editor:

Cinematographer:

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