Chouko Ryuugasaki

Heiress to the Ryugasaki family and one of the top female tennis players in Japan. The daughter of Hanae Ryugasaki, Utako's rival from Kyoto, Choko is also Miyuki's unscrupulous arch-rival who delights in sabotaging Miyuki with cruel practical jokes and scurrilous rumours. She portrays herself as a cute and innocent victim of Miyuki's wickedness.