Legend of the Five Rings - The Way of Bushido
In 1170, the Dragons, tired of Man’s rule of the Heavens, exerted their will upon Tengoku. The Seven Fortunes allowed the Dragon of Jade and the Dragon of Obsidian to replace Hida Yakamo as Lord Sun and Hitomi as Lord Moon respectively. The other Dragons, save the Dragon of Thunder, left mankind to cement their power.
In the Month of the Horse in 1170 the Jade Dragon was successful in removing Yakamo as Lord Sun, replacing him. Omen gained a new identity, the Voice of the Jade Sun. A Temple of the Jade Sun was built in its honor in Tokigogachu.