This caused anti-Hojo forces, such as the ex-shogun FUJIWARA no Yoritsune, to gain in strength, and as a result there occurred an emergency in May 1246, wherein Mitsutoki NAGOSHI, who was a relative of the Hojo family (a grandson of Yoshitoki HOJO) and served as an aide to Yoritsune, made arrangements for military action under the banner of Yoritsune.
このため、前将軍藤原頼経を始めとする反北条勢力が勢い付き、1246年5月には頼経の側近で北条氏の一族であった名越光時（北条義時の孫）が頼経を擁して軍事行動を準備するという非常事態が発生したが、