And so the mermaid became the villainess

I will definitely change this unreasonable world!" The curious mermaid princess Anmetta came ashore to be by the side of her beloved prince. However… "You will continue to bleed until you die." Prince Lien and his fiancee Lionie imprison Anmetta in order to use her "mermaid powers." Days of cruel torture begin. A terrifying witch
appears before Anmetta, who is exhausted both physically and mentally, and gives her human legs. The witch then proposes a new deal to Anmetta. "There are three princes in this country." "Would you please go back in time and become queen? And I want you to get back what is important to me." In order to avoid tragedy, Anmetta's new challenge begins!