Tales of Kitaria: Lady of the Seas

Kaltia is one of seven mermaid daughters, but longs to go where her father forbids everyone in her kingdom to go. While trying to find a prince she rescued against her father's wishes, she runs into a dark magic-wielding con-man who offers her a faster route to her dream. But the catch? Sacrificing her voice, that is, if she wants to make her dreams come true.