When Yukikage KAGAWA surrendered to Motochika CHOSOKABE, Motoharu went to Oko-jo Castle by twos in turn in cooperation with Yukikage's chief retainers Shichirobe KAWATA, Yataro KAWATA and Yoshihisa SANNO.
香川之景が長宗我部元親に降る際、同家家老の河田七郎兵衛、同弥太郎、三野栄久と共に二人ずつ交代で岡豊城に赴いた。