Uma Musume: Pretty Derby PV
Genres: Sports
Type: ONA, Episodes: 1
Aired: Mar 25, 2016
Studio: P.A. Works
Source: Game
Rating: G - All Ages
Synopsis:
A promotional video by Cygames for their newest game project. The concept of the game seems to involve a mash-up of an idol-raising simulator with a horse-racing mechanic, except the idols and horses in question are moe, anthropomorphic horse girls.

(Source: Crunchyroll)