"異世界" (Isekai) refers to a genre in Japanese fiction where characters are transported to a different world, often one filled with fantasy elements. This new world typically features magic, mythical creatures, and unique societies, allowing for adventures that differ significantly from the characters' original lives. In many Isekai stories, protagonists gain special abilities or powers that help them navigate challenges in this unfamiliar setting. Popular examples include light novels, manga, and anime series, where characters often embark on quests, form alliances, and confront villains, all while exploring themes of growth and self-discovery.