is a 2011 Japanese film directed and written by Tak Sakaguchi and Yūdai Yamaguchi. Based on the manga by Ken Ishikawa, the film is about Shozo Iwaki (Tak Sakaguchi) who works as a mercenary in South America. Iwaki is informed of the death of his gang boss dad and discovers his former Yakuza henchman is involved in a double-cross. Yakuza Weapon was premiered at the 2011 Yubari International Fantastic Film Festival and opened theatrically in Japan on July 23, 2011.

Plot

Shozo Iwaki (Tak Sakaguchi) is a strong fighter with a strong disregard for his own safety during fights by shrugging off all wounds and damage. He has a falling out with his father, the Boss Yakuza Kenzo Iwaki (Akaji Maro) and spends years in the South American jungle fighting mercenaries. After a battle against opposing soldiers, Shozo is found by a special agent code-named "Red Tiger" and his team of Japanese government agents who inform him of the news that his father was recently assassinated.