Sword Art Online Season 4 War of Underworld Episode 21 Release Date, And Latest Updates !!

Sword Art Online

Sword Art Online Season 4: Sword Art Online is an anime series directed by Manabu Ono and animated by A – 1 Picture. The series is based on the light novel series by the same title, written by Reki Kawahara and illustrated by ABEC. The streaming channel released the first part of the series on October 6, 2018. The series air in numerous countries including the USA, Mexico, Australia, France, Germany, Russia, and South Korea.


The series was soon renewed for the second part. It streamed on October 12, 2019. The next part titled War of Underworld was all ready to hit the screens on April 25, 2020, but was delayed. Yes, you guessed it right, another delay because of the coronavirus outbreak! It was then released in July. The fourth part also followed soon. Now the fourth part is all set to excite the viewers with its action and drama. So here is all the information you need to know about the upcoming episode of Sword Art Online – Season 4 –


Release Date

The network releases a new episode every Sunday. So we can watch the new episode on 6 September 2020 at 12:00 am, JST.

Sword Art Online Season 4


The cast of the show has been appreciated globally. So how can we expect an episode without these stars playing their parts –

  • Yoshitsugu Matsuoka as Kirito
  • Haruka Tomatsu as Asuna
  • Bryce Papenbrook as Kirito
  • Christine Marie Cabanos as Silica
  • Cassandra Leo Morris as Leafa
  • Kaneo Ito as Yui.


In the last episode, we saw that after Kirito was successful in saving Asuna. Everyone welcomes him with great zeal. Kirito and Poh get into a fight again. Kirito uses his black sword to destroy Poh. Poh summons all his evil powers and now he is desperate to kill him like he has been wishing to do for the past 2 years. We saw Poh provoking Kirito during the fight in many ways. Who will be defeated, and who will be victorious is still suspense!

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