「Youkai Mountain」

The illusionary Yatsugatake, which still towers over Gensokyo. Taken over by the tengu and myriad other youkai. Some quite fearsome individuals used to dwell there, but those days are far in the past. It's been quite lively recently, ever since the gods from beyond the boundary arrived.

Today, someone is shaking the Mountain's ever-shifting balance once again. Even the Misty Lake that the Mountain's water flows into can't help but feel the effects.