Ryouko Tachi

Ryouko Tachi (舘涼子, Tachi Ryōko) is a second year student at Shiratori Girl's Academy, all girl high school. She first becomes a friend of Kaoru Sugimura when they meet during an early morning workout. She is also a rival of Nana Chigusa, having previously lost an 800m race to her.

Background
She meets Kaoru and helps him when Kaoru has problems while he is out running one morning. Due to her slim build and short hair, she is mistaken for a boy, by a classmate of Nana's and even by Kaoru himself.

Ranking
Objectively the best girl.