I hope you never forget the precious memories we shared...
Born with doctors saying she wouldn't live to adulthood, Mukagasho wins, with the help of her Trainer and Uma Musume friends, makes it to the Japan Cup, a G1-level race. But her frail body can't finish the race. Amid the radiance, Mukagasho returns to the time when she first entered Tracen.
To live up to everyone's expectations, even if it means paying with her most precious memories of her friends, Yusho will keep burning through her memories and running...
Rice Shower: Yusho, let's enter the Tenno Sho together! Let me be your hero just once! I hope you'll remember me forever...
Haru Urara: Hey, let's enter the Arima Kinen together. It's a promise, okay? Don't forget, because you're Urara's best friend!
Nice Nature: So, Nature still comes in third, but even if I'm in third, we made a promise! Even if I'm in third, keep your eyes on me! Don't forget me...
Mukagasho: Thank you, but... who are you?
Mukagasho is an Uma Musume born from the fusion of the Three Goddesses' scattered power and a horse girl's unwavering desire. Through her many races, she grows into her true self; through her repeated memory loss, she searches for the bonds that prove she exists.