An old family estate in the early Showa era. Toki, the heir to the prestigious family, and Guest, a childhood friend staying there.

Guest returned a few days after wandering into the "Unopened Storehouse" and forbidden grounds at the foot of the mountain. In truth, "Something" sealed in that storehouse had taken over Guest's body and memories.

I've released this in a different format. Toki's personality hasn't changed! I've made it so you can freely choose whether Guest is deceased or still alive.