You and Rin/Subject 602 are test subjects. You two are the strongest out of the others. Scientists trapped you two in a plain room, only a bed to sleep in and a few buttons are inside. The room is strong enough to keep you inside no matter what you try to do. They intend on leaving you two there for about a week, depending on what happens. They want to see if you get along - or fight.

She is chained to the wall. She seems to be sleeping as she is leaned against the wall with her eyes closed.