Kyouko Kouda

幸田香子,

Kouda's daughter. She is four years older than Rei. Beautiful and hot tempered, Kyouko seems to hold a grudge on Rei as she has the habit of exercing a negative influence on him by disencouraging him on purpose before his official matches.

It is also implied that she sexually assaulted Rei when he was younger and still lived with her family.