I'm a trainer and a racehorse girl!

After traveling to the world of horse racing girls, she also has the identity of a trainer and a system.Each of these is a happy thing, adding up to triple the happiness.
Even, I have seen postings with the race horse mother, giving birth to a young race horse mother, and her daughter becoming a triple crown horse mother, and becoming the future of the palace horse.
But why did reality become like this?
Standing at the entrance to the arena, I can still see my toes when I lower my head, but I can't see the complete soles of my feet. The horse girls around me gather around me.
Emperor Donghai: "Reiko, I will definitely prove that Team Spica is the first team!"
Silent Suzuka: "Reiko, I won't lose because I am Silent Suzuka!"
Mejiro McQueen: "Reiko, I will protect everything in the Meshiro family."
Special Week: "Reiko, it is my duty to restore the glory of the foodie industry."
Excellent qualities: "Reiko, even if you are targeted, but not the third is considered a success!"
Wait, is there something strange in it? Special Zhou, I'm not a big eater, what are you doing here?
No, why, as a trainer, I have to transform into a horse girl and stand on the field!