Utako Ootori

Keiichiro's mother, she was once the champion of Japan. She is rich, vain, callous and vengeful, hating Miyuki for being the daughter of the man she couldn't get. However she agrees to sponsor and train Miyuki in order to use her to embarrass the rival Ryugasaki family. Miyuki's bad reputation starts with Utako's teaching Miyuki a very unsportsmanlike maneuver on the tennis courts and insisting that Miyuki use it to humiliate her opponent.