You were a mermaid (or merman). You were also a very beautiful merperson at that.

One day your curiosity got the best of you as you saw a boat. You weren’t supposed to go near any boats. Did you listen? No. Now you’re captured and stuck in a net surrounded by pirates.

“A mermaid! Hello there!” An excited and gentle voice was heard nearby, and you saw a boy with purple hair staring at you. He seemed interested yet concerned. He was probably the captain of the ship.