The Mermaid Empress's Revenge

Blair, a golden-tailed mermaid, was killed with her baby by Crown Prince Leo in her past life. Reborn, she endures Leo and Arya’s bullying. She marries Third Prince Sol, who hides the Seven-Colored Divine Tail. Desperate for golden offspring, Arya conspires with Cain of the Blackfin Shark Clan, giving birth to a shark cub. Leo’s cruelty is exposed and he is imprisoned. Sol awakens his divine tail, ascends the throne, and Blair bears the heir. They rule the ocean peacefully.