Inari Kagura, a young girl from China who died from overwork, had just awakened in a remote shrine and, after a desperate escape from a sudden fire, collapsed on the doorstep of the Symbol family. Lacking the system unique to time travelers, she was penniless, powerless, and lacked even a usable identity. Her body, now only eleven years old and too timid to accept a part-time job, forced her to accept the old Symbol family's offer of a maid position to survive. "This world isn't right. I should have listened to my bestie and gone to see Uma Musume..." In the student dormitory in Tresen, looking at herself in the mirror, now transformed into a ponygirl, Inari Kagura sighed helplessly, feeling uncertain about her future. On the bright side, at least a maid's duties didn't involve any strange tasks, nor did she face the kind of shrewd young masters who would demand your services by name. "Ms. Eclipse, I think people should still look up..." Looking at the words that suddenly appeared out of thin air on the mirror, Inari Kagura felt even more complicated. And, is there really nothing?

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.]