As a result, it became customary to develop the new policy of Miyohajime at the time of the assumption of the new Tokugawa Shogunate family taken place due to the assumption of Seitaishogun (commander-in-chief of the expeditionary force against the barbarians, great, unifying leader) or the death of Ogosho.
このため、江戸幕府では幼少の場合を例外として、征夷大将軍就任あるいは大御所の死亡による徳川将軍家当主就任時に、「御代始」の新政策を打ち出すことが慣例化していった。