After losing her parents, Akai and Kanie, detectives investigating in Sawa's parents murder, takes the orphan teenage girl under their protection. Sawa is then forced in a relationship with Akai who abuses her. To make things more ironic, Sawa is forced in committing a series of hits for the corrupted detectives. She is ordered to kill suspected child molesters who are targeting young girls.

She makes a short appearance in MEZZO Forte at the beginning of the first OVA.