At the start of the Jinshin war, Prince Oama first ordered to gather soldiers in Ahachima County (later became Ahachi County) of Mino Province and Prince himself left Yoshino-no-miya (Yoshino Palace) on the 24th and headed east.
壬申の乱の開始時、大海人皇子はまず美濃国の安八間郡（後の安八郡）で兵を集めさせ、自らは24日に吉野宮を発って東に向かった。