Uma Musume: Pretty Derby - Shin Jidai no Tobira English Subbed

Jungle Pocket, an Umamusume who has been racing tirelessly in pursuit of becoming the greatest, is ready to take on the once-in-a-lifetime Classic Triple Crown series. However, standing in her way are rivals from the same generation, whose talent may even surpass her own.
(Source: Umamusume: Pretty Derby English Twitter)