Mourning Wife
Starring Mayuko Sasaki, Keisaku Kimura, Yoshikata Matsuki, Koharu Yamasaki, Hôryû Nakamura, Yukijiro Hotaru, Ken'ichi Kanbe, Shiori Kawamura, Hiroyuki Kawasaki, Kanae Mizuhara
It's a drama and thriller movie, and has a rating of 6.6 out of 10 from Imdb which is usually fine for this kind of movie.
Watch it here
Not found streaming from Belgium.