The hero and six heroines are trapped in a white closed room, and the heartless voice of a countdown echoes, saying, ``The game is about to begin.'' The main character ``Keisuke Takato'' relives in his mind a number of escape games covered in red and white slime. Turning his attention away from Tsuko Ando, who died due to the torture device, Kosuke nominates his next target. Rika Makiba's expression, which was once adorable like a puppy, becomes ugly and distorted. Drool drips from the mouth of the beautiful teacher Natsuki Aoi. Keisuke's face grows into a grin every time he opens the unrealistic door. One trapped ``male key'' and six ``female gates''