Hidetada who lived in the Edo Castle and Ogosho (the retired and still de facto Shogun) Ieyasu in the Sunpu-jo Castle formed a duarchy, however, Hidetada took the reins of the Bakufu according to Ieyasu's intention with advice of Masanobu HONDA and others.
秀忠は江戸城に居住し、駿府城に住む大御所家康との間の二元政治体制になるが、本多正信らの補佐により家康の意を汲んだ政治を執った。