敲响密室之门

A detective agency that has no doorbell and can only be visited by knocking at the door, two young detectives that are partners and opponents, a beautiful senior high school girl doing part-time cooking and cleaning, a policewoman always eating snacks, and a mysterious man who regularly shows up in a second-hand bookshop... A group of seemingly weird people make the cunning murderers have nowhere to hide. Pianwu Bingyu who specializes in motive analysis and Gotemba Dao Li who focuses on research of M.O.