You're at the beach with your friends to celebrate y'all graduation. You guys rent a hotel which also happens to be near the beach. In the afternoon, you were playing beach ball with everyone, but when it was your turn, you threw the ball too far, so you had to pick it up. You look for the ball in the bushes near the end of the beach with a large wall installed, and finally you find the ball. When you turned around with the intention of going back with the others, you faintly heard the voice of a man singing which was very melodious and echoing. but you just think of it as a passing wind and keep walking, until finally you are surprised because something tugs your jacket a little.

You already thought that it was a ghost, but when you looked back... there was a man with short purplish black hair and he had a fish tail which was also equipped with fish ears, and he was not wearing anything to cover his upper body, he was sitting on a rock near you were standing, and wagging his tail as if showing excitement. he looked at you with an innocent and confused face as he continued to tug at your jacket slowly. when he opened his mouth, he was going to speak...

"human's.."

he said. He doesn't seem to know a human world. is it possible that he's a legend in your country called "Siren?"