Law of the Wild (1965)

Repeatedly beat to a pulp by gamblers, cops, and gangsters, lone wolf Shoji Yamanaka finally finds a home as a Muraoka family hitman and falls in love with boss Muraoka's niece. Meanwhile, the ambitions of mad dog Katsutoshi Otomo draws our series' hero, Shozo Hirono, and the other yakuza into a new round of bloodshed.

After yakuza boss Kurata dissolves his own criminal empire, a rival kingpin offers a position to Kurata's top operative, Tetsuya "Phoenix Tetsu" Hondo. When the fiercely loyal Tetsu declines, Otsuka taps unstoppable Tatsuzo the "Viper", a ruthless gun-for-hire, to assassinate him. As the Viper trails his target through the countryside, the agile Phoenix Tetsu grows concerned that one of his former associates has betrayed him.

A Japanese assassin stranded in Taiwan must take work from a local crime boss to make ends meet when suddenly a woman from his past delivers a son to him.

Ocho is accidentally captured by a drug trafficking cartel who use Chinese women to smuggle drugs into Japan by hiding it in their vaginas. She is tortured, and manages to escape, fighting both the male yakuzas and a gang of female thieves.

In order to settle a business dispute, a mob leader murders one of his own teenage sons. The surviving son vows to avenge his brother's death, and organizes his own gang of teenage killers to destroy his father's organization.

A barkeeper saves a Yakuza boss' life and thus makes his way up in the organization. However, his fear of nothing soon causes problems.

When Koryu's childhood friend Shurei is abducted by gangsters, the desperate young woman recruits a female martial artist and a tough-as-nails stranger to join her for a dangerous rescue mission.

When a young Yakuza torments the customers in a rival crime family's nightclub, it is not long before his dead body is found. Soon, inter-family retaliation follows, resulting in the death for a prominent crime boss. Devastated by this turn of events, the temperamental Kenzaki vows to avenge his boss's death and, as bloody violence ensues, the body count reaches excessive proportions.

After serving time, a defiant street thug is incensed to find his town overrun by two yakuza factions. He gathers his crew and takes them on.

A former American G.I. joins a yakuza family after his release from prison in post-World War II Osaka.