Touhou Chireiden: Subterranean Animism

One day in Gensokyo, all of a sudden, there were lots of evil spirits going around. Reimu Hakurei, a Shrine Maiden and Marisa Kirisame, a black-clothed Magician were getting suspicious. They go into the underground to ask them to stop driving them to Gensokyo's surface. Depending on who you choose, one of them goes out to investigate.

The heroine starts to head underground, but runs into a Tsuchigumo, Yamame Kurodani who tries to stop the heroine from continuing. Yamame is quickly defeated and ...