Mio no Na no Moto ni In the Name of the Mermaid Princess

Synopsis

Princess Mio is betrothed to Prince Chika. They've never met, however, and he doesn't know her secret—she's a mermaid! When her tutor Yuri takes her out of the castle to meet her subjects, Mio begins to accept her true self. But Yuri has a secret too... And when Mio tells her father the king she wants to live life openly as a mermaid, he punishes her. How can she live her truth? (Source: VIZ Media)