Reiko Satouin, real name Reiko Sato, is a supporting character. She is a student who attends Takafuji Academy and she is the vice captain of the Flying Circus team.
Reiko is an self-proclaimed "ojou-sama" who is fixated on ruining the reputations of different academies for some unknown reasons. She has self-confidence, and is shown to have a lot of pride and a bit of chuuni in her. She is also a very popular person despite her dominant laughter and mannerism. However, she's always there to raise everyone’s mood during tournaments, but she also has her own serious moments.
