Woman in Witness Protection
マルタイの女 (original)
Biwako is a vain, middle-aged actress who witnesses a brutal murder. Realizing that the very public life of the woman makes their sole witness vulnerable to the killers, the police assign two officers to safeguard her until the trial. In the interim, the lives of Biwako and everyone around her are changed in unexpected ways.
Starring Nobuko Miyamoto, Masahiko Nishimura, Kazuya Takahashi, Masahiko Tsugawa, Tôru Emori, Akira Nagoya, Tarō Yamamoto, Houka Kinoshita, Daisuke Ryū, Tetsu Watanabe
Watch "Woman in Witness Protection" on Criterion Channel released in 1997. It's a drama and comedy movie, and has a rating of 7.2 out of 10 from Imdb which is usually fine for this kind of movie.