In the Kansai region, there have been frequent incidents of many women being kidnapped and imprisoned by unknown assailants. Suspecting a connection to the Women's Research Institute, female investigator Reika Nishijo, who is the deputy director of the Kansai Violent Crimes Headquarters and also the person in charge of on-site command, comes to Tokyo to visit Himekawa Ayumi in order to exchange and gather information. Reika is a headstrong woman who has survived many battles on the front lines, putting any man to shame. On the other hand, she is a Kokoro-hearted woman who worries about her subordinates and juniors and is subtly considerate. Reika visits the headquarters to gather information on the Women's Research Institute, but...