One anecdote about Akifusa recounts that after Ienobu's death he frequently visited the Ooku (the quarters of the Shogun's consorts) to secretly meet with Gekkoin (one of Ienobu's consorts), while another mentions that when Ietsugu TOKUGAWA saw how relaxed and at ease Akifusa was when with Gekkoin, he reportedly said to his wetnurse, "He acts as though he himself is Shogun."
家宣死後、大奥へ頻繁に出入りし月光院と密会を重ねていたとか、大奥で月光院と一緒にいるときの詮房のくつろいだ様子から、徳川家継が「詮房はまるで将軍のようだ」と乳母に言ったなどという逸話がある。