幻想世界, or "fantasy world," refers to a fictional universe that often includes magical elements, mythical creatures, and extraordinary adventures. These worlds are commonly found in literature, films, and video games, allowing creators to explore themes beyond the constraints of reality. In a 幻想世界, characters may embark on quests, encounter dragons, or wield magic. Popular examples include J.R.R. Tolkien's Middle-earth and J.K. Rowling's Wizarding World. These settings provide an escape for audiences, inviting them to experience the impossible and engage with imaginative storytelling.