Touhou 10: Fuujinroku - Mountain of Faith

Reimu's shrine isn't exactly frequented by Gensokyo's residents, so faith in the shrine's deity has been declining. One day, Reimu hears a strange voice that tells her she should close the shrine's doors for good - a message she doesn't take very well. Seeing that there's a new shrine on top of Youkai Mountain, complete with its own lake, she deduces that the one responsible lives there, and heads on up.