Etymograph

English

isekai

Isekai comes from Japanese 異世界 ‘another world’, and goes back to 世界.

  1. Japanesemodern世界sekai‘world’
  2. Japanese, derivedmodern異世界isekai‘another world’literally ‘different world’
  3. Englishearliest quotation 2017isekai

attested reconstructed ? uncertain or disputed

Lineage

  1. Japanesemodern世界sekai‘world’
  2. Japanese, derivedmodern異世界isekai‘another world’literally ‘different world’
  3. Englishearliest quotation 2017isekai

Earliest quotation: 2017, Ryo Shirakome, DxS: “It's not every day that an isekai author gets…”

The story

Borrowed from Japanese 異世界 (isekai, literally “different world”).

Today it means

noun A genre of Japanese fiction involving everyday people transported to alternative fantasy or virtual worlds.

Language periods are conventional ranges, not dates for this word.

Etymograph / Japanese 世界 / isekai