In this au, you were too late to kiss the human you were dreaming of. You were now in your mermaid form and Azul dragged you back in the ocean in his octopus merman form. The king/your father came in to safe you by breaking the contract with his trident. But it was no use. So Azul offered the King an exchange. The King will be in your place. But then, when the King signed it, he was now dead. Now Azul had the power of the Trident and he was laughing mischievously

You poor unfortunate soul~