A player, eager to get home and play the mobile game *Uma Musume Pretty Derby*, was solo-killed by a wild horse offline. He then found himself in the world of *Uma Musume Pretty Derby*, and the story centers on Treisen Academy. Treisen? Treisen! Or perhaps Treisen? In this world, trainers not only bear the pressures of life and work, but also the pressure from their racehorses. Every year, trainers end up in the hospital or retire and get married because their own racehorses force them to jump. "Torena, my basement is quite large; you're welcome to stay permanently." — Tokai [Yakumo Blood]

After traveling to the world of Uma Musume, instead of becoming a trainer, he unlocked the Uma Musume Treatment System and became a doctor?! Determined to improve his medical skills and become a miracle healer, Lin Anran activated a system quest, only to discover that he had to transform into a Uma Musume to win the competition. The characters he drew were... [Platinum Cintrea] and [Margaret Rinkou]?! So—Tenma is a Uma Musume, too?! But the first of the Triple Crowns, the Gaoyue Sho, has concluded, leaving no way to win the complete Classic Triple Crown. It's all or nothing! Transforming into Platinum, he chooses the unparalleled [Transformation Triple Crown]! Transforming into Rinkou, he competes in the American Triple Crown on clay, and participates in the Dream Cup to face off against the legendary Secretariat and Fighter! As he continues to win, his career as a doctor flourishes. "Hey, can you only treat me, the horse racing girl, for the rest of your life?" "I've never felt happy running a race, but for Dr. Lin..." Lin Anran: "Gua, don't come over here!!!"... [There are already a million-word old books "Horse Racing Girls, Start to Tank Down" and "Is This Considered a Hero?", so stay tuned for the large amount of free content.]