The Blind Beast Sovereign

When a visually impaired young mage is condemned to the Beast Prison Tower, she unwittingly breaks the seals on four ancient elemental beast kings — the Hellhound, the Moonscale Serpent, the Flame Phoenix, and the Spirit-Horned Stag. Bonded to her by sacred marks, these immortal shape-shifters become her sworn protectors. But as dark forces conspire to reclaim the tower's power, the girl who couldn't see the danger must become the one ruler the beasts will obey — or watch her world fall.