Synopsis

Arata Natsume is a former gangster, who now works as an employee at a child guidance center. One of the children under his care is a boy whose father was murdered by Shinju Shinagawa. Shinju committed a series of murders" She was sentenced to death for her crimes and, at the age of 22, awaits her punishment on death row. The head of the boy's father was never found, so the boy has exchanged letters with Shinju by using Arata's name as the pen name. The latest letter from Shinju asks to see Arata in person. The boy comes to Arataand asks him to meet Shinju in prison. Arata decides to grant the boy's wish and goes to meet her in prison, but he unexpectedly proposes to her to get married in prison. Arata begins to dig up the truth of the case.