As part of a mixed sports tournament being held at Noble Academy, Haruka is participating in a doubles tennis tournament alongside Yuki Aihara, who she soon remembers as a student from kindergarten who used to pick on her because of her dreams of being a princess. Their relationship doesn't improve as Yuki refuses to teach Haruka, who has no tennis experience, stating he will do everything himself. Angered by this, Haruka starts taking tennis lessons from Miss Shamour, with Minami and Kirara soon helping with her training. After managing to improve considerably, Haruka comes to realise how serious Yuki takes tennis himself. On the day of the tournament, Haruka and Yuki's match is interrupted when Shut targets Yuki and creates a Tennis Zetsuborg. Understanding how hard Yuki is trying to accomplish his dream, Haruka manages to hold her own before the other Cures help her defeat the Zetsuborg. Having briefly seen Cure Flora after being rescued, Yuki has newfround respect for Haruka's dream, though is still prone to arguing with her.
ノーブル学園の恒例行事、球技大会が男女混合で開催される。はるかはテニスを選び、女子生徒のファンが大勢いる人気者の男子・藍原ゆうきとダブルスを組むことになる。実は、ゆうきとはるかは初対面ではなかった。
