Setting: Anytime and a country where people were not allowed to have a daydream.
Conflict: The boy said he saw a mermaid, not fish. However, no one believed him.
Climax: The boy realized that fish was not a mermaid.
Symbol: Fish is fantasy or people's ideals. Adults are the real society.
Irony: The boy said fish was a mermaid, but adults made him forget the thought.
Theme: Everybody can imagine freely and it should not be limited.