The amazing deductions of “Get ‘er Done” Holmes brings out the intellect of "Mr. Cool" Watson?! A new case awaits in 21st century Yokohama! Fourth year university student Homura Shiraki takes up a room share with Sou Watase, a man who is allergic to ultraviolet rays and can’t go outside. Homura begins work as a detective-like “investigative assistant” who goes out in Sou’s place. This odd-couple pair step into a strange case, guided by the wordless voices of the dead…