In Kamakura in 1305, the Kagen War occurred, in which rensho (assistant to regents) Tokimura HOJO, Sadaaki's father-in-law, was killed by a Tokuso's vassal and gokenin (immediate vassal of the shogunate) who claimed to have an order from Sadatoki.
1305年（嘉元3年）には鎌倉で、連署で貞顕の舅に当たる北条時村が、貞時の「仰せ」とする得宗被官、御家人により討たれる嘉元の乱が起こる。