A New Enemy! The Yuumajuu (新たな敵！幽魔獣 Aratana Teki! Yūmajū) is the seventeenth episode of Tensou Sentai Goseiger. This episode features the debut of the Earth Condemnation Group Yuumajuu, the second enemy army of the series, as well as the debut of the Goseigers' Sixth hero, Gosei Knight.