In 1246, a plot to eliminate the fifth regent Tokiyori HOJO was exposed that was conspired by certain members of the hyojoshu, including Mitsutoki NAGOE who supported the Shogun Yoritsune KUJO (Miya-sodo [allied attempt at rebellion]).
寛元4年（1246年）に将軍九条頼経を擁する名越光時ら一部評定衆による5代執権北条時頼排除計画が発覚する（宮騒動）。