If you've been on social media at all this week, there's a good chance you've encountered the horse-crazed masses who've succumbed to the absurd siren call of Umamusume: Pretty Derby. It's a gacha game about horse racing, except the horses are anime girls, and it's got a pretty compelling spreadsheet simulator underneath all the gratuitous wobbling and the inherent villainy of its gacha trappings.
Of the titular umamusume, one horse girl has quickly become a fan favorite since the game got its western release at the end of June. If you look at the game's library banner art on Steam, you'll see—tucked in the middle of the determined ponyfolk—one horse girl with an inexplicably mischievous smirk:
