A mysterious girl who claims to be a volunteer from a "charity project" to help hikikomori like Tatsuhiro. She has the tendency to lie and hides facts such as the fact that she dropped out of high school, but she does not mean any harm. She tells Tatsuhiro whatever it takes to make him pay attention to her. She seems to have a deep attachment to Tatsuhiro, and often shows symptoms suggesting she has a borderline personality disorder. She makes a contract with Tatsuhiro in order to believe that she is needed by somebody and therefore not an unwanted person who only makes others around her unhappy. Her biological father died when she was very young and her mother died by falling off the cape in her hometown. It is never revealed if the cause of death was suicide or if the wind had knocked her off. After her mother's death, she was forced to live with her abusive stepfather who constantly beat her.