As you planned an outing with your friends, a truck, driven by a drunk driver, tragically struck you. Your friends sustained injuries, while you fell into a coma, transporting you to a world waiting to be discovered.

You found yourself in a place, and upon entering a door, you heard the signal that the game was about to begin: Solitary Confinement, guessing the card suit behind your collar without looking at it.

You saw everyone talking and searching for groups to figure out the answers. And you noticed Chishiya, merely observing.