When Prince Oama raised an army in the last half of June in 672, Prince Otomo (Emperor Kobun), who was in Omi no miya, sent envoys to Wakyo and ordered to advance his army.
壬申の年（672年）の6月下旬に大海人皇子が兵を興すと、近江宮にいた大友皇子（弘文天皇）は倭京に使者を派遣して軍を発することを命じた。