- Country: Japan
- Genres: Drama, Thriller
- Release: 1969-01-31
- Director: Kōji Wakamatsu
- Writers: Masao Adachi
- Language: Japanese
- Stars: Ken Yoshizawa , Akiko Tsushima , Kaori Aihara , Michiyo Igawa , Hiroshi Jô , Hiroshi Kaneda , Kiyoshi Kinami , Yoshiko Kitajima , Reiko Minamikawa , Gorô Muraoka
- Runtime: 73 min
- Awards: N/A
- AKA: Vengeance Demon , 新日本暴行暗黒史 復讐鬼 (Japan) , New Underground History of Japanese Violence: Vengeance Demon , Fukushûki , 復讐鬼 (Japan) , New Underground History of Japanese Violence: Vengeance Demon (United Kingdom) , Shin Nihon Bôkô Ankokushi: Fukushûki , New Underground History of Japanese Violence: Vengeance Demon (United States of America) , The Revenger , Le démon de la vengeance (France, French Republic)
- Plot: A Kung Fu warrior named Shao Tu (Li Tung) wanders around helping the oppressed, but makes many deadly enemies along the way. One such enemy is Mao (Wong Ching) who leads his army of fighters and plans a deadly plot to bring about Shao Tu's downfall.
- IMDB:tt0291186
Fukushûki Cast · · · ALL
Kōji Wakamatsu
Director
Ken Yoshizawa
The Revenger
Kaori Aihara
Hiroshi Jô
Kiyoshi Kinami
Reiko Minamikawa
Kazuya Taguchi
Kohei Tsuzaki