Umamusume: Cinderella Gray S01 E18 Wild Joker

There once was an earnest Umamusume who gave racing her all, but had nothing to show for it. Still, she craved victory more than any other, so one day, she made a choice. She'd bet everything on a single race across the Pacific. In order to win there, she'd don the joker's mask and sacrifice everything—even herself—to become a true wild card.