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?
| Actor | Role |
|---|---|
 Mai TachiharaRei | Rei |
 Yujin KitagawaMitsuru | Mitsuru |
 Tetsu WatanabeTadokoro | Tadokoro |
 Daisuke YamazakiBar Patron | Bar Patron |
| AAyana InoueRieko Saitoh | Rieko Saitoh |
| RRyohei KuniedaNot listed | Not listed |
| RReiko KojimaNot listed | Not listed |
 Maki MeguroNot listed | Not listed |
| HHitomi OhtaniNot listed | Not listed |
| EEisaku ShindoSeiji Kadowaki | Seiji Kadowaki |
 Shinji YamashitaMutoh, 0 section manager | Mutoh, 0 section manager |
| EEini OshiroDetective | Detective |
| HHajime TsukumoBartender | Bartender |
 Etsuyo MitaniVoice on the phone | Voice on the phone |