With a case of social anxiety bordering on agoraphobia, combined with the trauma of losing her mother Wakaba Isshiki, Futaba is strongly discomfited by going outside. She communicates with the world remotely via the Internet, and her adoptive father Sojiro Sakura enables her lifestyle out of guilt that he could not protect her from trauma. Having disconnected herself from humanity and the world beyond her apartment, Futaba is lonely, lives without passion and enthusiasm, suffers from suicidal depression, and questions the point in her living. When first encountered, Futaba is so consumed with self-loathing that she suppresses her desire to live.