He colluded with the armed warrior priests of Mt. Hiei, Imperial Prince Yasuhito, Koremichi OCHI and Kuniuji HINO, and stole the Three Sacred Treasures of the Imperial Family from the Northern Court (Conspiracy of Kinketsu).
比叡山僧兵・泰仁親王・越智維通・日野邦氏らと結託して北朝方から三種の神器を奪う（禁闕の変）。