Proxy War (1973)

The film is set in 1960, fifteen years after the end of the end of World War II. Shozo Hirono (Bunta Sugawara), the protagonist of the first film in the series, has managed to separate from the Yamamori family, create his own small family, and extend his circle of acquaintances. These new friendships include a powerful underboss of the Muraoka family, Noboru Uchimoto.