Involving other daimyos (territorial lords) with matrimonial relations to the Date clan, the confrontation turned out to be a huge war in the region, breaking up the Ou region into two, and after the War, the waned Date clan relocated its base to Yonezawa City.
姻戚関係を結んだ諸大名を巻き込み、奥羽を二分する大乱に陥り衰退し居城を米沢市に移した。