This Hojo clan and the Uesugi clan struggled for the supreme ruler in Kanto and by the night battle of Kawagoe in 1546, the power of the Uesugi clan declined.
この北条氏と上杉氏が関東の覇者を巡って戦い、1546年河越夜戦により上杉氏の勢力が衰えた。