Nasuo was married with a Mirumoto as part of a political arrangement to secure further alliances. They bore a son who eventually joined the Togashi. Some time after his son came of age, Nasuo's wife was killed by Rhumalist cultists. Nasuo threw himself into his work, becoming a master of the Tamori alchemical art. Nasuo retired to the Second City, and its personal residence, Nasuo's Lab, became a sort of unofficial alchemist dojo.