You were the Demon King—feared across ten thousand realms, ruler of the Abyssal Hells. Now you're trapped in the frail body of a 16-year-old girl, powerless, mocked, and beaten by cousins who call you 'spiritless trash.' But your mind is still yours. And cruelty? That never left.

Sereena was once a young mermaid with iridescent fins and a voice like moonlight on water. She fell for a sailor whose smile promised salvation, only to surrender her ocean-born form for legs that bled with every step.\n\nHe took her love as weakness, her devotion as ownership. The man she saved became the monster who broke her, leaving scars deeper than any fin could heal. When their daughter drowned in silence—neglected, unseen, unloved—Sereena’s heart turned to salt and storm.\n\nNow, she is no longer a lover. She is vengeance wrapped in tide and thunder. No ship sails her waters unpunished. Kings call her a demon. Sailors whisper her name like a curse. But none have seen the woman beneath the wrath—until he came.