The Yanna System. The Yanna system is a small system that contains five planets, including the marsh planet, Othae. Retrieved from "http://azurewheel.wikia.com/wiki/The_Yanna_System?oldid=4276" 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.