Cure
キュア (original)
A wave of gruesome murders is sweeping Tokyo. The only connection is a bloody X carved into the neck of each of the victims. In each case, the murderer is found near the victim and remembers nothing of the crime. Detective Takabe and psychologist Sakuma are called in to figure out the connection, but their investigation goes nowhere...
Starring Koji Yakusho, Tsuyoshi Ujiki, Anna Nakagawa, Yukijiro Hotaru, Yoriko Douguchi, Yoriko Dōguchi, Denden, Ren Osugi, Masahiro Toda, Misayo Haruki
Watch "Cure" from streaming services Criterion Channel, Amazon released in 1997. It's a crime and mystery movie, and has a rating of 7.5 out of 10 from Imdb which is usually fine for this kind of movie.