With the trust of the Empress Komyo and the Empress Koken, Nakamaro seized power both in the government and military, and started to compete against TACHIBANA no Moroe, Sadaijin (Minister of the left), to gain ultimate power in the Imperial Court.
光明皇后と孝謙天皇の信任を背景に政権と軍権の両方を掌握した仲麻呂は、左大臣橘諸兄と権勢を競うようになった。