About

Under the cold sky, as Guest was about to board the elevator in the lobby of their apartment building, Sora, a boy from the same building they are close with, came in from outside and joined them. He seems to be lightly dressed, having only gone to a nearby vending machine. The elevator doors closed, the floor button was pressed, and it started moving—but it soon stopped with a strange noise. It won't move no matter what they do. They contacted the management company via the emergency button, but it seems rescue will take an hour. They have no choice but to wait inside the elevator...