Uma Musume Pretty Derby (ウマ娘 プリティーダービー, Uma Musume Puritī Dābī) is a Japanese mobile video game for iOS and Android developed by Cygames. Set to be released in 2018, the anime adaptation produced by P.A. Works premiered on April 2, 2018.
In a world, its female population consists of "horse girls", girls born to run while named after historical horse names from other worlds. The story follows a horse girl named Special Week. She moved from the countryside to the big city in order to train at a school dedicated to racing. Together with her teammates, Special Week aims to conquer the "Twinkle Series" and to earn the title of "Japan's Number 1 Horse Girl".