Sin in the Rain

It is raining in the Tokyo at night. A woman is wandering soaked to the skin. Her name is Kimura Yu. She had a trauma that her parents were killed, and she experienced another tragedy that her reliable councilor, Kanzaki, was killed miserably. The person who suddenly appears in the rain and saves Yu is a detective, Takamizawa Kyosuke. An officer, Oki, suspects Yu and investigates her persistently. However, consecutive murders occur as if the criminal mocked at him. In the background of the case Mizuno, the classmate, is seen off and on. Suffered from the thought that it was her who killed Kanzaki, she is chasing the criminal with the help of Takamizawa. Meanwhile, they'll find out the criminal of the consecutive murders. Then, the story comes to a shocking end.