Sword Art Online S4E20: The Night-Sky Blade

  • Aired: 2020-08-29
  • Time: 01:00:00
  • Runtime: 25 minutes
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Overview

Alice and Asuna head to the World's End Altar as Kirito confronts Gabriel. Unless he can defeat Gabriel and return to the real world before the maximum-acceleration phase begins, Kirito will have to spend the next 200 years in the Underworld.