The Little Beacon (GT DNF Merman AU)

If you read "Castle Swimmer" on Webtoon, it's similar to that, and no, not much to "The Little Mermaid" A drop from the sun sunk into the depths of the ocean. A merman, born with the abilities of the sea, and one problem, they're not like regular merfolk. They're smaller, like a human borrower, 5 inches tall The merma...