Isekai (Japanese: 異世界, transl. "different world" or "otherworld") is a Japanese genre of light novels, manga, anime and video games that revolve around a person who is transported to and has to survive in another world, such as a fantasy world, virtual world, planet or parallel universe. This plot device allows the audience to learn about the new world at the same pace as the protagonist.
The concept of isekai started in folk tales, such as Urashima Tarō. However, the first modern isekai works were Haruka Takachiho's novel Warrior from Another World and Yoshiyuki Tomino's television series Aura Battler Dunbine.
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