Kazunari's cousin and girlfriend. The villagers do not approve of their relationship. She is a participant in the first King's Game. It is revealed that she is responsible for the commencement of the first King's Game, albeit accidentally. When she locked herself in her family's storage shed after her mother chastised her about her relationship with Kazunari, she broke a pot, becoming infected with a virus. The virus would then mutate within her, becoming the virus that causes the mysterious deaths in the King's Game. She came down with a fever shortly after, during which time she infected all the other villagers with the King's Game virus. The virus also controlled her, making her write down the King's orders. She tricks Kazunari into giving her poison so that he would be the one to survive the King's Game.