I write a comment about Mermaid,which is an animation created by Osamu Tezuka.
The story is following as ;
A boy who likes fantasy lives a town. But in this town, people is prohibited from imagining freely. One day, the boy catch a fish. but, he can see it as a mermaid. He loves her. He spend playing with her. But, his parents can't see it as a mermaid. They think it is a fish. Then, he is caught by the police. They force him to admit that a fish is not a mermaid but a fish by torture. However, he doesn’t yield to the torture,and continues to insist the fish is the mermaid! Then, the police compel him to read many book and forget the mermaid. Finally, he forgets the mermaid. He decide to take the fish to the ocean. But, when he goes the ocean, he remember the mermaid!
In the end, I assume he also becomes a merman and lives with her forever.
In my opinion, the author tries to teach us the importance of free imagination.
Nowadays, we are prepossessed by a stereotype and a bias. In consequence, we can't imagine freely. So, he created this animation ,told us the situation and wanted us to understand the importance of free imagination.
This animation is simple and no voice. But, I am impressed by it.