However, the relationship between Haruuji and the Hojo clan was gradually deteriorated and finally Haruuji fought against Ujiyasu HOJO in the night battle of Kawagoe and he was defeated.
ところが、次第に晴氏と北条氏の関係が悪化していき、ついには河越夜戦で北条氏康と戦って敗北してしまう。