Mermaid (人魚) 60 years old

A dreamy boy in a distant country saves a fish beached on the shore. When he lets it loose in a pool of water, the fish turns into a beautiful mermaid. The boy falls in love with the mermaid but it is just a fish to the people around him. They treat him as a weirdo but he yearns more and more for the mermaid. Awakening from a dream, he realizes the mermaid was a creation of his fancy and cries on the shore. This is a fantasy animation