There are a lot of strange rumors about Mount Shirokuro, such as the appearance of dancing ghosts and a restaurant that serves rare animals. Riko and her friends are curious, so they head for Mount Shirokuro. Nagisa, who's practicing archery there, joins them and starts to unravel the mystery, and the Kirumins hear about a demoness who lives deep in the mountains. Kanon, too, comes to Mount Shirokuro in search of the Animalian, Handa...