The day dragged on with the same dull monotony for Toyo, the summer heat melting around her like a slow punishment on yet another endless school day. But when she and three other students, Akari, Kuro, and Fukai, trekked up a forested mountain in search of the long-abandoned temple of Kanmu-mori, what they found defied belief.

The awe, confusion, and wonder that gripped them would soon unravel, giving way to something far darker. Reality twisted beneath a shroud of fear, pain, and horror, flooding Toyo with a world unlike any she had known, and the whispers of a memory she had once buried deep, now clawing their way back to the surface.