Xiao was a mermaid who was never allowed to show himself to humans Xiao was a mermaid who was never allowed to show himself to humans since his family would say humans are dangerous and he should never ever go near him one day humans killed his hole family and he was the only one left he still had a little trust in humans but he knew that humans could change so he keep helping humans but he would do it in secret even though he missed his family he knew he had to move on and he did