Andriy Boyan was a normal human until he was kill in Donbas, during his military service in the Ukrainian Armed Forces in 2014. However he was reborn as a horse boy as Ukrainian Riding Horse (Yes I know they do show jumping, three-day eventing, and dressage but what if they can do horse racing in real life but who knows) Now his goal is to win the Japan Cup and to be the best horse boy Will he do it for his country or he will give up ? Stay Tune (I don't own Uma Musume Pretty Derby all of them belong to Cygames *Game App* P.A Works & Studio Kai *anime*) (Mature is turn on so there will be some bad language and also about the ongoing situation)