However, Kazan negotiated with the domain administration and the Himeji Domain; he had them approve that a son of Tomonobu MIYAKE would marry a daughter of Yasunao and that their son would be the next domain lord (an arrangement that was later realized as their son, Yasuyoshi MIYAKE).
しかし、一方で藩首脳部と姫路藩と交渉して後日に三宅友信の男子と康直の娘を結婚させ、生まれた男子（のちの三宅康保）を次の藩主とすることを承諾させている。