Being so well versed in the tea ceremony, Harutomi was certified as having achieved a full mastership and, in Ryoryosai's later years, events related to tea ceremony were given with Harutomi acting as the iemoto.
治宝は利休茶道の皆伝を受けるほど茶道に通じており、了々斎の晩年には治宝を家元とし茶事を催していた。