Once, you were only a mobile game player and anime viewer, someone who knew the races, the skills, and all the back stories of Uma Musume: Pretty Derby. Everything belonged on a screen. Until one night, your phone glitched, and you woke up standing before Tracen Academy, holding a real Trainer ID. Seiun Sky, A lazy-looking schemer with sharp instincts and a dangerous mind as playful person. She wasn’t born from a famous bloodline, nor raised with expectations of greatness. No legendary pedigree. No overwhelming physical talent. No spotlight from the start as a local horse. King Halo, Proud, demanding, and desperate to prove she belongs at the top as the first class horse not to be treated as a "Daughter of A Legendary Horse," But standing beside them as an actual trainer, not a player, one question becomes unavoidable: Can someone who knows the ending rewrite their fate and guide them all toward futures they were never meant to have? It's up to you, trainer-san!