I'll Never Love You Again, My Prince — Episode 10

Mermaid princess Noa trades her tail to Circe for legs, only to find her husband Prince Kaos in bed with her maid. At the wedding she eats the Oblivion Fruit and leaps into the sea; Kaos grabs her veil. Rescued by lord Morne, she forgets it all—unaware he wants her blood to revive his dead love. Kaos burns his power for her, then dies to save her.