Hideo Nakano

In the near future, the earth is devoid of women due to a virus that will lead to the extinction of the human race. In the meantime, a murder occurs at a research institute that was developing a vaccine. Kiriyama of the Public Security Bureau goes to the scene and finds that the murderer is his colleague Kaneshiro. He had already been infected with some kind of virus...

Nana, the director of the Nanase Detective Agency, is a detective skilled at professional pachinko. One day, a man named Fukushima, who is visually impaired, asks her to investigate his wife, Tomoko. She hardly ever stays at home, became addicted to pachinko, and even engaged in prostitution to make money. Around this time there is also a serial murder case involving regular pachinko players. Detective Omachi, who is investigating the case, asks Nana to cooperate.