At a national sports event, Chiyu takes first place in the High Jump, breaking the current record. This causes Chiyu to be asked to do an interview with the second place competitor, Tsubasa Takami. After the interview, Tsubasa asks Chiyu if she will be competing in the international event, but Chiyu declines. However this angers Tsubasa, who reveals her passion for the High Jump, and that she feels Chiyu isn't taking her talent seriously. Chiyu becomes upset and confides in the others, who all comfort her, telling her that she can do things her own way. The next day at school Chiyu attempts to break her High Jump record, and finds she was only able to do it because of Tsubasa. Chiyu runs off to find Tsubasa, only to learn from her school friends that she has already left to move abroad. Chiyu manages to track Tsubasa down at the sports arena, where she is saying goodbye, until Shindoine appears and turns her into a GigaByogen. Chiyu transforms into Cure Fontaine and battles Shindoine before helping the other Cures defeat and purify the GigaByogen. Afterwards, Chiyu tells Tsubasa she plans to go to the international sports event and hopes they can compete against each other again one day.