Jewel of the sea

For the last 12 years of her life, Calythea was trained by Salveris, a hardened soldier who taught her strength, courage, and how to fight for survival in a fractured world. As the last water fae-a lineage thought to have been destroyed centuries ago when Vandor, the oceanic kingdom, was attacked out of greed-Calythea's existence alone is dangerous. Her powers, untested and raw, have the potential to reshape a world where magic itself was altered by Vandor's fall.

On a mission for the Earth Kingdom to recover a lost relic of ancient power, Calythea and Salveris discover the ruins of Vandor by the sea, uncovering secrets long buried beneath its waters. But their success is short-lived. When Salveris is gravely wounded and Pyraflor's forces ambush them, Calythea is captured and dragged into the heart of an empire that thrives on fire and conquest. King Theron, ruthless and ambitious, plans to wield her magic to reignite Pyraflor's waning power and destroy any kingdom that stands in his way.

In captivity, bound by iron that dulls her magic, Calythea must rely on the courage and lessons Salveris instilled in her. As she begins to unravel the mysteries of her heritage, she discovers that her connection to Vandor and the relics of the past is far deeper than she ever imagined. Meanwhile, Salveris and his roguish ally Reynor infiltrate the Pyraflor army in a desperate attempt to save her, though the growing shadow of war threatens to make their mission impossible.

This is book 1 of a series. Book 1 is done and I'm working on book 2 now