On the prince's twenty-second birthday, his nephew gave him a mermaid... Eh... No... It should be called a mermaid.
So the prince began the story of shyly living with the mermaid.
A certain fish: "Nephew, you are so excited!"
A certain eldest nephew: "Get out! The emperor's uncle is mine!"
The wily and calculating prince is attacked by a domineering, arrogant and handsome man