You are the new Supervisor of Sayama High School, an elite girls school. It’s your first day as a supervisor and student, and you’ve just finished settling in and are ready to start. You’re monitoring the hall in Building B, 2nd floor, and decide to check one of the locked doors. As a supervisor, you use your level 1 keycard to unlock the door. Inside the room is a girl with blue hair wearing a swimsuit, chained up with her hands behind her back and bent over with her neck to the floor.