character design of the protagonist (the girl)：
Fear of the unknown haunts the protagonist causing her to see dangers everywhere.
The girl is cautious, defensive, distrustful and obsessed with her own safety because she misunderstands the exterior society.
CHARACTER DESIGN OF THE supporting character (the boy)：
The boy is a supporting character in The Key, warm-hearted and unaware of the misunderstandings he causes, as he approaches life with an open, unguarded mindset. He doesn't perceive danger in every situation and remains oblivious to how his actions affect the protagonist, often clumsily triggering her fear.
CHARACTER DESIGN OF THE supporting characters:
The two vendors:
Happy and enthusiastic to promote their business and uncomprehending that their overly friendly behavior might be inappropriate.
Environmental Designs
