Wolf Guy
The only survivor of a clan of werewolves relies on its feral, full-moon-activated superpowers to solve crimes.
Starring Shinichi Chiba, Kyōsuke Machida, Etsuko Nami, Kumi Taguchi, Yayoi Watanabe, Rikiya Yasuoka, Harumi Sone, Hiroshi Nawa, Hideo Murota, Saburo Date
It's a action & adventure and crime movie, and has a rating of 6.3 out of 10 from Imdb which is usually fine for this kind of movie.
Watch it here
Not found streaming from Italy.