There are no ninjas in this film. I suppose that the U.S. distributor saw the name "Kosug" and decided to go for fans of his father, which is a pity. The film is actually a straight martial arts cheapie, filmed with available architecture (instead of expensive sets) and with minimal plot of the "lured into underground fighting" type. On that basis, it isn't too bad. About on the level of KARATE GIRL or THE KICK, say. I'm not sorry that I bought it, I just wish that Lions Gate had been more honest about the content.