The Siren Princess with strong self-esteem and ambition was given to the Demon King clan. The mysterious Demon King actually showed an elegant and moving side. He said that he would help her become the Siren Lord. The princess felt that she was bewitched. Her identity was tentatively determined to be a vampire and a mermaid. They are two powerful people who appreciate each other. They like some earthy settings. This is a draft.
Concept: The mutual achievements behind some fairy tales