Kahyō

is a missing-nin from Kirigakure and the bodyguard of the Ryūha Armament Alliance's leader, Garyō.

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

Abilities
Kahyō has shown to be a very skilled kunoichi being able to go head to head with Kakashi Hatake, the Sixth Hokage, and surprising him on several occasions. Her power was also enough to defeat A in a training bout. As further testament of her skills Kakashi recommended that she be put in charge of the Hōzuki Castle.

Nature Transformation
Kahyō is able to utilise the Ice Release, by simultaneously combining the water and wind-natured chakra to produce ice. Through the use of her kekkei genkai Kahyō can freeze moisture in the air to form ice swords, which she can form from great distances. She is also able to freeze targets to death by causing ice particles to form on their body either remotely or through physical contact. The technique is very useful in neutralising shinobi and is on par with the Fire Release: Heavenly Prison.

Kakashi Hiden: Lightning in the Icy Sky
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.