Bloody Spear at Mount Fuji
血槍富士 (original)
Starring Chiezō Kataoka, Ryūnosuke Tsukigata, Chizuru Kitagawa, Yuriko Tashiro, Motoharu Ueki, Chie Ueki, Eitarō Shindō, Daisuke Katō, Unpei Yokoyama, Toranosuke Ogawa
It's a action & adventure and drama 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 Italy.