Kahyō

is a missing-nin from Kirigakure and the bodyguard of the Ryūha Armament Alliance's leader, Garyō. After failing in her mission but seeing the error of her decisions, she agreed to repent by taking up for life the position of running the Hōzuki Castle.

Background
At some point in time, Kahyō and her son Hakuhyō left Kirigakure annd settled in the the Land of Waves, in the hopes that Hakuhyō would not be persecuted by the village.