He transmigrated with a whole collection of horse-racing games into another world where horse racing was immensely popular, becoming a ranch owner with a beautiful and mysterious secretary.
The catch? Until he completes the main quest in this world, he can't leave the ranch, except during certain special periods.
Along with owning the ranch, he must ride its racehorses under different identities and speed around the track.
Let's see how he shakes up the world of horse racing on another Earth.
(This story combines elements from several horse-racing games: Winning Post, Derby Stallion, Champion Jockey, and Pocket Stables. I'm writing it to express my love for horse-racing games and Uma Musume.
It contains transformation and other anime-style elements, so please don't read if that's not your thing, to avoid spoiling the fun for everyone.
This is a parallel-world universe where everyone loves horses, so please don't compare it to reality. Horse-racing knowledge is incredibly varied, so if any events or facts contradict reality, please take the story's setting as the standard and don't nitpick.)