Uma Musume is a Japanese multimedia franchise centered on anthropomorphic horse girls inspired by real racehorses. It began as a game and expanded into manga and anime adaptations, following characters who train, compete, and grow through friendships, rivalries, and intense sports drama. Uma Musume: Cinderella Gray is a spin-off manga/anime project within this franchise, but the main/master title used for broader matching is simply Uma Musume.