A group of seven people from the university's reasoning club came to Tsunoshima, where the "Ten Kakukan" built by the talented designer Nakamura Seiji is located. A few years ago, Nakamura Seiji's family died mysteriously; now, murder scenes are being staged one after another among this group of college students! Who can prevent the tragedy of "no survivors" from happening again? Perhaps, only the man named "Shimada Kiyoshi" can solve the mystery in "Jukkakukan".
