The hero everyone knew

Soraya is the well-known heroine of Mobius, and the fastest creature alive, and everyone knows her.
But what if they don't know her well enough? What if their heroine is actually just a hero? And she is just a "he" in hiding? And the first person to find out, the first person to catch her in a moment of weakness, is her own rival.

TW!
Body dysphoria
Gender dysphoria
Vomit
Blood
Swearing
Panic attacks
Angst
Fighting
Slight gore
Suicidal thoughts

(Cover art not mine!)