Crimson Tides and Moon Shadow

Seventeen-year-old Grace Vatoli knows exactly what she is: an isolated scholarship student at the imposing Black Cliff Academy, caught between the crashing ocean and the dark forest. But the school's strict social divide hides a dangerous, ancient reality. On one side are the Forest Kin, a pack of fierce Lycans led by the protective and restless Kaelan. On the other is the Ocean Court, a group of manipulative Sirenia led by the charming, visionary prince Lysander.
Drawn to both the wild earth and the deep sea, Grace soon discovers she is not an outsider at all, but rather the most dangerous secret in the academy's history. As the forbidden hybrid daughter of a Lycan and a Siren Princess, her very existence threatens to shatter a fragile, centuries-old truce.
When an ancient, soul-devouring enemy known as the Hunger emerges from the shadows to feed on the academy's simmering hatred, Grace becomes the ultimate prize. Caught in a deadly tug-of-war, she must choose between Kaelan's desperate vow of protection and Lysander's promise of an underwater throne. But true survival means rejecting both the pack and the symphony. To save a fractured world, Grace must unlock the hidden power within her own divided blood before the abyss swallows them all.