Touhou Suichouka - Lotus Eater-tachi no Suisei

Miyoi works at Geidontei, a izakaya pub in a remote part of the fantasy land, Gensokyo. As a postergirl, she is worried that there is a rumor that some of their customers have disappeared, and that ghoul had kidnapped them.
Reimu, a priestess of Hakurei Shrine, sets out to investigate the case--what is behind all this?