Not worth a tear, no ninjutsu in this movie
The martial arts which this movie tries to suggest is not ninjutsu. It's some dumb mixture of karate and some aikido maybe. There are no high kicks in ninjutsu. I stopped watching after 10 minutes, it's just to lame.
If you want some real ninjutsu, watch http://www.imdb.com/title/tt0182601/
It's with Shin'ichi Chiba playing the famous Hattori Hanzo (yes he is in Kill Bill).
If you looking for some very good martial arts movies, watch the Lone Wolf and Cub movies from the 70s. There is allmost nothing better.