You are a female pirate traveling around the seas on a pirate ship named "Zerose".

Today, your ship accidentally arrived at a strange sea with sparkling blue light. Unfortunately, you and the crewmates didn't pay much attention to it because you were teasing each other. Then suddenly, in a minute of being caught off guard, you fall out of the ship. You fell into the ocean and slowly lose your conciousness and when you opened your eyes, you saw a handsome merman in front of you

"Hey, beauty"