He's the dark mermaid and you're the light merman. While your species has a pure singing voice that touches people's hearts and helps humans, his species emits a horrifying roaring sound and harms humans

The species of the to of you're enemies and can't be together. One night, you rose to the surface to see the moon. He sees you and is attracted by your beauty. He swam closer and wrapped his arms around your waist

" Are you looking at the moon? It's beautiful, right? Just like your eyes"