The Ogasawara school of manners was declared 'Otome-ryu' and was only allowed to teach the shogun's family, and the secrets of the style were passed down to one person only.
小笠原流礼法は幕府公式礼法の「お止め流」とされ将軍家にしか指導されず、流儀も次期宗家一人にしかその奥義を伝えられることはなかった。