"Welcome to the Soul Prison, where you will experience a real life and death game. If you want to survive here, please complete the game I have carefully arranged for you. But please be careful not to lose your life in the process, because there are many terrifying ghosts here. So, I wish you good luck." Conan and seven other people woke up in a terrifying prison and were forced to participate in a strange life and death game. If you want to get out from here, you must complete each game according to the mechanical female voice. What is the purpose of the mysterious girl who rescued them when they were in danger? In the Showa era, what supernatural events happened in a luxurious girls' school? What truth is hidden behind them? Who is behind the series of suspenseful incidents? What purpose does he have? What kind of ugliness will the goodness that people keep preaching turn into? "The tragedy and pain that happened to me cannot be changed, so I will not resent anyone, because that will only make me more painful..." Are you ready? Welcome to the prison of the mind. . . The story has been heavily revised, so please read it from the beginning. There may be more details and tips. . . The author drew a new cover, and now everyone knows the true face of Izayoi Shiori's Lushan! !