He was appointed to the Meryo (Bureau of Horses) following the Kemmu Restoration and became a regent in Kamakura under Kamakura Shogun, Imperial Prince Nariyoshi, before going on to lay the foundations of the Kamakura Government.
建武の新政では馬寮に任じられ、鎌倉府征夷大将軍成良親王を奉じて鎌倉にて執権となり、後の鎌倉府の基礎を築く。