Does it count if it's a short film about a real life event that is used in a video game?
I think so and it's an amazing story too.
Link to the real life story of Haru Urara ( "Glorious Spring") on the Umamusume wiki.
Haru Urara (ハルウララ, Haru Urara) is a supporting character in Umamusume: Pretty Derby. She is a friend of Special Week and many other umamusume. She travels around often to compete in races. Although she never returned with a single victory; she returned with souvenirs for her friends. She's on a...
umamusume.fandom.com
I am currently taking Haru Urara through career mode in Umamusume and she's a plucky, energetic cinnamonroll and i can see why people love her game character so much