During the Yoshida Koriyamajo Castle War, Hisasuke participated as a warlord on the side of the Amago clan, but was soundly defeated and fled to Izumo.
この吉田郡山城の戦いでは久扶も尼子方の武将として参加したが、散々の敗北を喫し、出雲へと逃げ帰った。