Black Widow: The Obsidian Manor

While hiking through the mountains, a group of friends seeks refuge from a sudden storm in a mysterious, sprawling estate. The sanctuary quickly turns into a nightmare as they are systematically separated and subjected to sadistic torments. They soon discover they have fallen into the trap of a cruel woman who operates a "slave mansion," where their lives are now forfeit to her twisted whims.

As the group discovers the gruesome deaths of Saki and Naoya, a terrifying secret comes to light: Seiya possesses a sadistic second personality named Maya. Having orchestrated the trip to the manor, Maya reveals her role in the killings and begins to psychologically manipulate the remaining survivors, leaving Akira and the others trapped in a nightmare of betrayal and madness.