Prism Stone goes to the cultural festival held by the all-boys school Kakyoin Academy. While searching for Rinne, Naru runs into Koji and the school's top Prism Star, Hiro Hayami. She accidentally reveals that Koji wrote her song, causing tension between the boys, while Ito criticizes Koji's songwriting skills. Irritated at Koji, Ito volunteers to do the Prism Show and debuts her song, "BT37.5", landing two Prism Jumps, causing him to fall in love with her. Afterwards, Rinne is found, having won the Miss Kakyoin Contest.