After Tokimune's death, Yasumori, who had the support of the gokenin, led the shogunate administration and initiated the Koan-tokusei (political reforms instituted in the Koan era); however, a dispute with Yoritsuna TAIRA (a head of the Tokuso family who was a representative of the miuchibito) led to him being overthrown in the Shimotsuki incident.
時宗の死後、御家人層の支持を持つ泰盛が幕政を主導して弘安徳政を開始するが、御内人の代表である内管領の平頼綱と対立し、霜月騒動で滅ぼされる。