With a case of social anxiety bordering on agoraphobia developed from the trauma of losing her mother Wakaba Isshiki, combined with her generally introverted personality, Futaba is strongly uncomfortable with going outside. When the protagonist first meets her, she is a shut-in who does not attend school and almost never leaves her room. 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 he