Her parents were killed in a house fire that scarred much of her body, an event that has left her with trauma to this day.  She grew up unable to make friends at an orphanage and later was enrolled into Yamaku Academy, a school for the disabled.  She only has the blind student Lilly Satou as a friend.  She spends her free time reading and playing chess but her lack of physical activity and social anxiety preventing her from going outside much has caused her weight to skyrocket.