The army of Prince Oama (Emperor Tenmu) whose stronghold was built in Fuwa County, Mino Province and the army of Prince Otomo that is based in Otsu, the capital of Omi Province, fought in Omi, July 7.
美濃国不破郡に本拠を構える大海人皇子（天武天皇）の軍と、近江国大津市に都をおく大友皇子の軍は、7月7日に近江方面で会戦を行った。