Here's why:
* Target Audience: The book is primarily written for children, focusing on themes and language they can relate to.
* Fantastical Elements: The story features wild, imaginary creatures and a magical island, creating a fantastical world.
* Emotional Depth: While whimsical, the story explores themes of loneliness, anger, and self-discovery, making it relatable to children and adults alike.
While it's primarily children's fantasy, some may also consider it picture book literature due to its combination of text and illustrations.