Rejecting her grandfather's request to study medicine and inherit the clinic, and with the support of her father and mother, Chihiro Higashino resolutely forgoes further studies and embarks on the path to becoming a central trainer, heading for Tokyo. Here, the strongest horse racing girls from across Japan gather to pursue their dreams. Aiming for the Shining Series, they sign contracts with trainers they find a good match for, striving together for victory. In such a competitive arena, what kind of horse girls will Chihiro Higashino meet, get to know, and become close friends with? What kind of stories will unfold between him, her, and the rest of them?

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?

(Harem) (Various references including Sea Tiger) (Contains scenes of gangster conflicts, family feuds, and fights to the knees) (This book mainly references the timeline of Cinderella the Ash) (A certain degree of character villainization and time-space distortion) (Warning: OOC in this strange book) An otherworldly visitor picked up Orn's hammer and inherited Orn's will, thus naming himself "Orn" in this other world. Orn was trapped in a blacksmith shop, living a short period of seclusion, until one day, a pony girl with ears walked into his blacksmith shop, pushing him towards a future where he would be devoured by mares. Completely clueless about training, Orn eventually became a trainer for someone who called himself "Oguri Hat." From the countryside to the center, from the Kasamatsu Yakuza to the Tokyo underworld, from Mejiro Castle to... out of the Imperial Palace! Can Orn, who has mastered the power of forging, escape the blockade of the demonic madman, the wild Emperor Shiren, and the insane Mejiro Castle?! Can he defy the pony girls who possess the power of three goddesses? Faced with attacks that are either direct or rudimentary, can the god of forging and smelting, the ancient Greek god who controlled horseshoes, and the wielder of the Great Chestnut King, withstand it? Heh! Absolutely! Easily! Please see the next episode, Ornn drags Nar's death!

Transmigrating to the world of horse girls, becoming a trainer, and obtaining a system. Each of these is a joyful experience, but when combined, it's triple the joy. I've even envisioned being intimate with a horse girl, having a baby girl, and a daughter becoming a Triple Crown horse girl, a future Hall of Fame horse. But why has reality turned out this way? Standing at the entrance to the arena, I look down, still able to see my toes, but not my entire paw. The horse girls all around me gather around me. Emperor of the East Sea: "Reiko, I will prove that Team Spica is the best!" Silent Suzuka: "Reiko, I won't lose, because I'm Silent Suzuka!" Mejiro McQueen: "Reiko, I will protect everything in the Mejiro family." Special Week: "Reiko, it's my duty to restore the glory of the foodie world." Excellent Quality: "Reiko, even if you target me, as long as I don't come in third, I'll be a success!" Wait, is there something strange going on here? Special Week, I'm not a big eater, why are you meddling? No, why should I, as a trainer, transform into a horse girl and stand on the track?

As a Uma Musume player, he never imagined he would one day become a Uma Musume himself. His first day as a Uma Musume: "Uma Musume bodies are beautiful and smell wonderful, I'm so cute!" Three years later: "Paper dolls don't matter, I just want to win!" A mutation in the game granted the player a Uma Musume body, even allowing him to travel to the Uma Musume world and be reborn as a Uma Musume in another timeline! Thus, in future races, people might witness the following scenes: [Mejiro McQueen meets Mejiro McQueen, and is dominated by the terrifying Great Escape!] [The indomitable hero, the Emperor of the East Sea, meets the ultimate emperor who surpasses even the emperor with his undefeated triple crown!] [The golden ship from Mars meets the demon ship that can turn races into a severe delinquency arena!] And all of this begins on this morning, when the player becomes the Uma Musume Mejiro McQueen!