This 9-year old American girl is the adoptive daughter of Seta Noriyasu. Sarah first appears to make Keitaro's life miserable by throwing random artifacts at him or beating him up with the martial arts moves that she learned from Seta when he works as her "papa's" assistant. She takes up temporary residence at the Hinata-sou when Seta goes on another expedition as he feels Sarah should live a regular childhood. While at the inn, Sarah becomes fast friends with Kaolla Su becoming "partners in crime" as both are foreigners, like changing their hairstyles to resemble the other and cause mischief for the other inn residents. While bathing with the other girls, Sarah normally wears a bathing suit as she tries to avoid exposing a panda-shaped birthmark on her butt, which greatly embarrasses the girl. Keitaro discovers this secret and uses it as blackmail to keep Sarah from causing problems for him in the manga. She tends to refer to Keitaro as a "dork."