According to "Nihonshoki" (Chronicles of Japan), in the end of June in the year of Mizunoe-Saru (one of the Oriental Zodiac), the Imperial Court of Omi no miya which knew Prince Oama (later Emperor Tenmu) raised an army dispatched the envoys to many places and raised the army for its suppression.
『日本書紀』が伝えるところでは、壬申の年の6月下旬、大海人皇子（天武天皇）が挙兵したことを知った近江宮の朝廷は、各地に使者を派遣して鎮圧のための軍を興させた。