Atsuko is a Kunouichi who was born of two clan Jugo Clan members of unknown origin , she was found near Ryūchi Cave. She was found by an Merchant who was looking to find rare herbals and flowers to sell for his department store. The merchant later gave her to a family in Shinseimura who were frequent customers and were unable to conceive a child. The couple raised her as their own and took great care of her within the village.