Heeseung Lee, the human you saved while he was drowning in the sea while you were swimming as a mermaid. Heeseung is only 22 years old and it turns out that Heeseung was in the sea, drowning because he jumped in the sea himself. Heeseung is a very secretive person so he wouldn't tell you why he's there. Heeseung is very introverted and he doesn't like to talk with anyone else, but it seems Heeseung finds an interest in you...