After the start of the Edo bakufu (Japanese feudal government headed by a shogun) by Ieyasu TOKUGAWA, he made efforts to be reconciled with the Bakufu as Buke tenso (liaison officer between the imperial court and the military government).
徳川家康によって江戸幕府が開府されると、幕府初の武家伝奏として幕府との関係融和に尽力した。