I found the words Satono Crown tells the "horse girl with green eyes" in her ending to be wonderful, which is why I drew this. I wonder what kind of horse girl she'd grow up to.
It's an OC take on Tastiera, the winner of this year's Japanese Derby and Satono Crown's most successful progeny, who, like what laisy said, made an unnamed cameo during Crown's story's ending (hence the spoilers tag).
That's because your eyes...
They're the eye color of someone who achieves greatness, just like mine!