The Ring Keeper Aj Park by A.j. Park B0BNP1HZNN instant download after payment.

Caught between twin brothers, one courting demons and sorcery, the other the ruler of an empire protected by magic, Ana bears a ring of unknown powers, her legacy from a mother she never knew.
Discovering the ring’s ability makes her both a valuable member of the emperor’s court and a target for abduction by his jealous brother. Soon Ana finds herself betrayed and kidnapped, ultimately held at the mercy of the emperor’s twin and his dark secrets.
The ring exposes a web of love, hatred and unimaginable betrayal. Though its power drains her life force, the fate of the empire depends on her ability to unlock the ring’s secrets. She must find the will and strength to use it, for its magic can save the lives of everyone Ana has come to love. Or it can destroy them completely…