Mochiuji continuously conquered Mochitsuna UTSUNOMIYA and Nobuyoshi MOMOI who were also members of the Kyoto fuchishu to wipe out groups which supported the Muromachi bakufu (The War of Mitsushige OGURI or The Oei War).
続いて同じく扶持衆の宇都宮持綱・桃井宣義を倒して関東から親幕府勢力の一掃を図った（小栗満重の乱または応永の乱）。