The Only Son
一人息子 (original)
Starring Chōko Iida, Shinichi Himori, Masao Hayama, Yoshiko Tsubouchi, Mitsuko Yoshikawa, Chishū Ryū, Tomoko Naniwa, Bakudan Kozo, Tomio Aoki, Eiko Takamatsu
It's a drama and romance movie, and has a rating of 7.7 out of 10 from Imdb which is usually fine for this kind of movie.
Watch it here
Not found streaming from Italy.