An invitation to "Shironagasu Island" was left inside a billionaire's will. Sen Ikeda, a man who runs a detective agency in New York, heads to the island with Neneko Izumozaki, a girl with special abilities. There, numerous bizarre murder incidents occur. What is the truth hidden on Shironagasu Island...? Solve all the mysteries and escape from the cursed island! The long-awaited manga adaptation of the masterpiece adventure game, which sold over 200,000 copies, begins!!