My Vow to the Merfolk King

Mira was worshipped as the village Saintess her whole life-until the man she loved locked her inside the Merfolk King's cave as a sacrifice to save another woman. To protect his new lover, he used forbidden magic to ruin Mira's name, destroy herpurity, and turn the entire village against her. But no one knows the truth: Mira carries a cursed bloodline powerful enough to drive merfolk mad. Forced into a desperate bargain with the Merfolk King, she returns as something no longer fully human... and this time, she's coming back for revenge.