In the Jinshin War in 672, KOSOHE was on the side of Prince Otomo (Emperor Kobun) and defeated in the battle on the beach of Yasugawa River in Omi Province on August 14 and fell into enemy hands.
天武天皇元年（672年）の壬申の乱で大友皇子（弘文天皇）側につき、7月13日に近江国の安河の浜で敗れて捕らえられた。