As an introvert, going outside to a crowded place is the last choice or when absolutely necessary. An introvert usually hope to wrapped outside as a comfort zone to be themself without having to meet any types of human.
The illustrator create blue sky and broadleaf sunflowers to represent of how beauty and huge outside is. So that the character which is named "Culture Fairy" can freely fly and alight anywhere as much as her like.
"Imagine outside" is a simple picture of an unreal world that always appear in her head again and again.
