Furthermore within the Shogunate, Yoshinaga NIKKI opposed Kiyouji HOSOKAWA and Kunihiko HATAKEYAMA and went to the Southern Dynasty; Kiyouji, a Shogun's deputy (Kanrei) of the Muromachi Shogunate, left for the Southern Dynasty over remarks by Douyo SASAKI; with the Shogunate weakened by power struggles, the Southern Dynasty took the opportunity to briefly regain Kyoto; government was in flux.
更に幕府内では仁木義長と細川清氏・畠山国清が対立し義長は南朝へ降り、さらに室町幕府執事(管領)の清氏が佐々木道誉の讒言で離反して南朝へ降るなど権力抗争が絶えず、その隙を突いて南朝方が一時京都を奪還するなど政権は流動的であった。