Just then, Fusasada began persuading the Muromachi bakufu (Japanese feudal government headed by a shogun) into bringing Kamakura kubo (kubo: shogunal representative) back and making Eijuomaru (later, Shigeuji ASHIKAGA) who was a son of the deceased former Kamakura kubo Mochiuji ASHIKAGA inherit the hereditary position in the Kanto region to quell the disorder there in the aftermath of the Eikyo War.
折りしも永享の乱後の関東地方の混乱鎮圧のために房定は鎌倉公方を復活させて前公方足利持氏の遺子の永寿王丸（後の足利成氏）の関東復帰を室町幕府に運動を始めた。