As a result, the relationship between Yoritsune and the Shikken, Tsunetoki HOJO, worsened and in 1244, influenced by a nightmare, he ceded the position of Shogun to FUJIWARA no Yoritsugu, his first son by his official wife.
そのため、執権北条経時と険悪な関係となり、寛元2年（1244年）、悪夢を理由に将軍職を嫡男の藤原頼嗣に譲る。