Consequently, Yoshitoki gave up the idea of having an Imperial family member as Shogun, choosing instead to seek a Shogun from among the line of regents and advisors; in the sixth month of the same year, he hailed Mitora KUJO (afterwards known as Yoritsune KUJO), son of Michiie KUJO, as the new Shogun and Lord of Kamakura, creating a rule by regency system that concentrated most power in the regent's hands.
このため義時は皇族将軍を諦め、摂関家から将軍を迎えることとし、同年6月に九条道家の子・三寅（後の九条頼経）を鎌倉殿として迎え、執権が中心となって政務を執る執権体制となる。