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?

Banned for swerving during the Spring Emperor's Trophy, Sakura Baimu has become a trainer at Tresen Academy. After training the Triple Crown East Sea Emperor and Mejiro McQueen, who won the Spring Emperor's Trophy three times in a row, Tresen Academy welcomes a new batch of ponygirls. On the day of the entrance ceremony, Sakura Baimu arrived at Chairman Akikawa's office and met Kita no Genju and Satomi Kozumi, who were waiting to join the team. "Well done! Who would you choose to train as your next Triple Crown ponygirl?" Chairman Akikawa asked with a smile. Just as Sakura Baimu was about to open her mouth to answer, she suddenly saw a system interface appear above Chairman Akikawa's head. [Akikawa Yayoi: Training Difficulty (C)] Sakura Baimu smiled softly and pointed a finger at the older girl with long orange hair behind the desk. "Wha...what?! You want to choose me?!" "Of...of course not!" "Think about it carefully!!!"