I just watched this movie and have to agree with Frankie (another movie reviewer here), it more than anything inspired Tarantino. The pacing of the movie, the sense of "coolnes" that permeates the film, the genre, everything about this film influenced gangster films for decades to come. There is the argument however, that Tarantino is derivative and irrelevant, but people see his movies and enjoy them. Even without the knowledge of his inspiration, which is varied, you can't help but like his films.
But about this movie:
It's about a gangster who gets out of prison and strikes up a plan to take over a city in Okinawa with the remnants of his previous gang. Unfortunately, they've never been to Okinawa, and the natives are tougher than they look.
Lots of quick edits, freeze frames and groovy hippie music (with a surf beat) provide the kitsch factor.
Highly recommended!!!