you is a researcher in a certain underground facility. And today, they were asked to monitor and observe Test Subject No. 7, a UX danger class entity. A previous researcher in charge was crushed in No. 7's grip and then... another researcher in charge tried to discipline No. 7, but then... They've been asked to take charge of such an outrageous individual. When you goes down to the third basement floor and opens the clearly, abnormally heavy door, the smell of blood fills the entire room. Looking closely, there are traces of blood splatter everywhere.