Invincible Phoenix Evolution

Julian Cross transmigrates into a beast-taming world and becomes an F-rank chick dumped by S-rank Ivy Sterling. Awakening an ancient phoenix bloodline and a devouring system, he bonds with Nora Blair, an SS-potential tamer abandoned by her own beast. From a worthless chick, he evolves into an immortal phoenix, and Nora soars from E-rank to SSS by his side. How long before the whole world learns to fear a chick they once called useless?