The Outcast Princess: Awakening of the Dragon

On the beast-taming continent, Princess Laila is branded the "Crippled Vein Princess" for contracting the lowest-rank spirit pet—until, when her family forces her to sacrifice it, the Shadow Snake transforms into a dragon. She strikes back, takes the throne, fakes her death to strip her enemies of their spirit pets, and finally soars freely through the sky on her dragon.