[Machine Translation] A storm, a locked room, and no great detective. The stage is set in an isolated villa, the Shisame Residence. Eleven people gather there, including a college student who loves mysteries, an unemployed young man, and a young man who attempted suicide. The owner of the house, an elderly gentleman, is murdered in a locked room, and the great detective is supposed to appear, but... But there is no one there. Who is going to solve the case? But what is revealed is the unexpected identities of all the characters and their sordid relationships. The story progresses from disparate perspectives, but before you know it, the puzzle is solved, and you can't stop turning the pages. A new type of mystery that is a must-read in one sitting is finally available in paperback!