Youth of the Beast
野獣の青春 (original)
Cuando un misterioso extraño se mete por medio de dos grupos yakuza rivales, la violencia explota en los bajos fondos de Tokyo.
Starring Jō Shishido, Misako Watanabe, Tamio Kawachi, Minako Katsuki, Daizaburo Hirata, Eimei Esumi, Eiji Gō, Akiji Kobayashi, Masao Shimizu, Nobuo Kaneko
It's a action & adventure and crime movie, and has a rating of 7.4 out of 10 from Imdb which is usually fine for this kind of movie.
Watch it here
Not found streaming from Spain.