On June 24th during the year of Mizunoe-Saru (one of the Oriental Zodiac signs), having decided to declare war on the Imperial Court of Omi, Prince Oama departed from the Yoshinomiya Imperial Palace and hurriedly headed east for his own palace of Uda.
壬申の年（672年）の6月24日、近江の朝廷と戦うことを決めた大海人皇子は、吉野宮から東に急いで莬田の吾城に至った。