After having narrowly escaped an attempt on his life at the hands of a psychopath, detective inspector Takakura quits active service in the police force and takes up a position as a university lecturer in criminal psychology. But his desire to get to the bottom of criminals’ motives remains, and he does not hesitate long when former colleague Nogami asks him to reopen an old case.
This movie contains 13 potentially triggering events.
The protagonist and another cop character keep harassing a teenage girl for answers about the disappearance of her parents. They keep chasing her and grabbing her wrists. An antagonist grabs the protagonist’s wife’s hand and won’t let go for a while. She gets visibly afraid
I wouldn’t say it’s a happy ending. Spoiler: the serial does get killed and the protagonist, his wife, Mio, and Max escape, but you can tell this will be a psychological weight all will carry in the future