"Hidden World" refers to a concept or theme often found in literature, film, and art, where an unseen or secret realm exists alongside the ordinary world. This hidden realm can be filled with magical creatures, ancient civilizations, or undiscovered landscapes, inviting exploration and adventure. In many stories, characters may stumble upon this hidden world through portals, enchanted objects, or unexpected events. Examples include Alice's Adventures in Wonderland and The Chronicles of Narnia, where protagonists encounter extraordinary experiences that challenge their understanding of reality and expand their horizons.