Genbu Marsh (玄武の沢) is a marsh named after the legendary tortoise Genbu (玄武). This marsh, consisting of a six-sided rock formation surrounded by mountains, was created while Youkai Mountain was still an active volcano. It's located near the Forest of Magic and Youkai Mountain.

In Symposium of Post-mysticism it is said that this is where many kappa live, including Nitori Kawashiro. Furthermore, in chapter 4 of Cage in Lunatic Runagate the Genbu Marsh is mentioned on several occasions as well as a location in Strange and Bright Nature Deity.

Ad blocker interference detected!

Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers

Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.