When the Prince Oama waged war against the Prince Otomo (the Emperor Kobun) in June 672, the Prince Otomo ordered Takasaka no Okimi, the officer to guard the City of Yamato (the old capital in Asuka) while the master was away, to raise an army.
壬申の年（672年）6月に大海人皇子が挙兵すると、大友皇子（弘文天皇）は倭京（飛鳥の古い都）の留守司高坂王に軍を編成させた。