Arguably the best horse in the Umamusume series, Special Week is now ported to flux.
Weights:
Dev: 0.7 - 1.0
Schnell: 0.85 -1.0
Flux on it's own has a general idea of what an umamusume is so a basic prompt would be "specialweek, umamusume" but omiting "umamusume" from the prompt doesn't impact the final image that much.