The mother of Erin, a Touda doctor of the Village of Ake. She is originally a woman of the Mist People, but left her original heritage when she married Asson, the son of the chief of Ake Village. However, Asson passed away early, and left his wife and unborn child to live in the village. Despite her being of the Mist people, Soyon was a gifted beastenarian and was given special permission to care for the village's Touda. She decides to train her daughter Erin to be a Touda vet without teaching her the Mist People's forbidden techniques.