The Viper Brothers (1971)
The Viper Brothers and the Young General

The Viper Brothers and the Young General
Overview
The last in the series. Sugawara runs into two mahjong cheaters (Ichiro Araki and Mako Midori + sidekick Takuzo Kawatani) whom he takes for friends in need as his naivety prevents him from seeing their true nature.
Similar
Gang vs. Gang (1962)
Sonatine (1993)
Unification of Japan 27 (2018)
Blue Sky (1989)
Shinjuku Swan (2015)
The Viper Brothers: Up on 30 Charges (1974)
Crying Freeman (1995)
Brother (2000)
Wasabi (2001)
Tattoo (2002)
The Clan's Heir is a Trans Woman (2013)
Motorpsycho! (1965)
Overkill (1987)
The Flower and the Sword (1964)
Kunisada Chuji (1958)
CONFLICT: Outbreak (2016)
Greatest Boss Of Japan (1970)
Showdown in Little Tokyo (1991)
The Rule for a Vagabond (1965)
Ankoku gai jingi (1965)