Kokone Kurisu is a second-generation main character from the Aikatsu! series who appears in the crossover film as a supporting idol from the Aikatsu! side. She is a student at Étoile Academy and serves as an exchange student, which places her outside the major idol schools. Her physical appearance features round golden eyes and a tangerine-colored curled ponytail secured with a green bow, giving her a bright and approachable look. As a pop-type idol, she specializes in cheerful, up-tempo performances and uses the Retro Clover brand for her stage costumes. One of her most consistent personal traits is a great love for sweets, which adds to her playful and energetic personality. In the story of the movie, she joins the joint live festival that brings together the idols of the Aikatsu! and PriPara worlds, contributing her talents to the collective effort to repair the timeline distortion. Her role is that of a supportive participant in the larger ensemble, working alongside both familiar Aikatsu! companions and newly met PriPara idols. Her notable abilities lie in her singing and dancing skills, which she deploys during the collaborative stage segments, and her presence helps underscore the theme of unity through idol activity.