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You have been Marked...

A strange rumor is spreading through the shadows of Tokyo's H City: a mysterious disfigurement, like a grotesque birthmark, has been appearing on the bodies of certain individuals. Anyone who receives the Mark will rapidly die of unknown, horrifying causes.

Deprived of your memories, you arrive at a mansion rumored to protect the bearers of the Mark. As the doors swing open, the countdown to death has already begun...