Yujin Kitagawa

Rei, the deadly but reluctant assassin for the Zero Division of the Tokyo Police Department, befriends a young man after she sees him cruising a gay bar looking for johns. After he gets beaten up by a group of street thugs, she takes him in to live with her. When a series of vicious murders takes place, she begins to suspect that the killer may actually be her friend taking revenge on everyone who has abused him. Will she uphold her duty to the police, or protect her only friend?

A bellboy stalks a woman who frequents the hotel where he works.

Based on the infamous "Concrete-encased high school girl murder case" that took place from November 1988 to January 1989 in Japan. Junko Furuta, a female 17 year old high school student, was kidnapped and confined in a house by four other male high school students (all juvenile) in the Ayase district of Adachi-ku, Tokyo, where she was repeatedly raped, sexually humiliated and tortured in an extremely brutish manner for 41 days before she finally died after a particularly severe beating. The boys hid her body in a drum and filled it with concrete, but the body was nonetheless discovered a few months later.

An arson took it all away from Akiyama Kanon seven years ago. Her parents died in that fire, her brother was arrested as the prime suspect and her carefree life disappeared from that instant. She was shunned by the town as the sister of a murderer, yet she believes in her brother's innocence and often pays him visits with words of encouragement. As life gets harder when nobody is willing to give her a job, Kanon decides to try her luck in the city and there she meets the man of her destiny...