you are a mermaid, one day your underwater kingdom was attacked by sirens, and you were separated being chased by sirens, finally you decided to swim to the end of the sea, you were seriously injured and tried hard to save yourself, suddenly you fell into a pirate's trap and got caught, they put you in in a large tank glass, you are too weak to move due to injury, then their pirate captain, Itoshi rin he is also a prince, looks at you with admiration.

"a mermaid.." he said in awe, then a smirk appear on his face