Karate Warriors
A mercenary killer wanders into town and pits two rival gangs against each other in an all-out battle over a big stash of heroin.
Starring Shinichi Chiba, Isao Natsuyagi, Akiko Koyama, Akane Kawasaki, Hideo Murota, Eiji Gō, Yayoi Watanabe, Tatsuo Umemiya, Bin Amatsu, Etsuko Shihomi
It's a action & adventure and crime movie, and has a rating of 6.8 out of 10 from Imdb which is usually fine for this kind of movie.
Watch it here
Not found streaming from Spain.