Nagisa Kinomiya is a detective for the 7 Investigation Division. The team consists of female detectives who seek out female criminals and help female victims. Nagisa Kinomiya has a special ability to hear the minds of others. To shut out other people's emotions, she wears a headset, but when working on a case, she uses her special ability. At crime scenes, Nagisa Kinomiya can hear the left behind voices of criminals and victims.