This is a short clip from "killer Hands" about the Dux Ryu Ninjitsu system from hanshi Frank Dux. It is said that Dux Ryu Ninjitsu came out of the Koga Yamabushi Ninjutsu system which mr Dux learned from Senzo Tiger Tanaka. Frank Dux is also the inspiration for the movie bloodsport with Jean Claude van Damme. This is an old clip about Dux Ryu Ninjutsu.
