The quality of Japanese movies in this genre has always been so so at best, but it seems to be slipping downwards in recent years.
Story of this movie is pretty derivative. There's a family of outrageously potent karate masters who in the old age killed any opponent with one blow. The modern descendant of this clan gets attacked by another group of criminal martial artists. The father is killed, and two small daughters survive. About ten years later, the grown up daughter is found by the martial artist gang, and is being targeted again. It's revenge for the girl, and finishing the unfinished business for the bad guys.
The movie has pretty bad action scenes. There's not a hint of moves that shows that any of the characters are who they are supposed to be. The moves don't look real, and this is probably not the fault of the actors, but due to bad choreography. Also, they could have put little more attention to staging the each act. It's reminiscent of cheaply made adult videos in many areas.
The level of Japanese action movies are about where Hong Kong movies were in the early '70s. Compared to the action scenes of say like the "Ip Man 2" there's really no contest.
There are period action pieces coming out of Japan that still holds quality, but ones that are positioned in the modern era has been going down hill.
There are better made movies in martial arts genre, and you'd probably better served watching those.
