Original
10/13/2019 - 12/29/2019 Finished
Sword Art Online: Alicization - War of Underworld (ソードアート・オンライン アリシゼーション War of Underworld)
Despite the defeat of Quinella—the pontifex of the Axiom Church—things have not seemed to calm down yet. Upon contacting the real world, Kazuto "Kirito" Kirigaya finds out that the Ocean Turtle—a mega-float controlled by Rath—was raided. Due to a sudden short-circuit caused by the raiders, Kirito's fluctlight is damaged, leaving him comatose. Feeling insecure about the people at the Axiom Church, Alice brings the unconscious Kirito back to their hometown—Rulid Village, disregarding her banishment due to an unabsolved crime. Now, Alice is living an ordinary and peaceful life close by the village, wishing for Kirito to wake up. However, tragedy strikes when Alice notices that the Dark Territory has already started to invade the Human Empire. Reassuming her previous alias, Alice Synthesis Thirty, she promises to defeat the Dark Territory in order to defend the world that Kirito and Eugeo worked so hard to protect.
12
Total episodes
12
Canon episodes
0
Filler episodes
0%
% Filler
Canon episodes · 12 Filler episodes · 0
Every season
Seasons and sequels
You may wonder, how many seasons does Sword Art Online: Alicization - War of Underworld have? Well, currently Sword Art Online: Alicization - War of Underworld has a total of 5 official seasons. Below is a complete list of the anime's seasons, arranged chronologically, including prequels, sequels, and canonical spin-offs.
Discover all seasons and episodes of this anime in broadcast order. Each season develops a key part of the story, introducing new characters, story arcs, and important events. Select any season to view detailed information such as the number of episodes, release dates, and a complete plot description.
Original
Secuela
Secuela
Secuela
SecuelaWhat to watch, what to skip
Watch order: filler vs canon
You're in luck! Sword Art Online: Alicization - War of Underworld doesn't have a single filler episode: all 12 episodes are canon. It's a faithful adaptation of the original manga, so you can enjoy it from first to last without skipping anything or checking any list of expendable episodes.
The 12 episodes of Sword Art Online: Alicization - War of Underworld aired in 2019 and follow the story's chronological order. There are no transition episodes, no needless recaps, no arcs invented by the studio: every chapter advances the main plot and develops the characters just as the source material does.
In short, the watch order for Sword Art Online: Alicization - War of Underworld is as simple as it gets: start at episode 1 and keep going to episode 12 without detours. If you came looking for which Sword Art Online: Alicization - War of Underworld episodes are filler so you could skip them, the answer is that there aren't any.
Episode by episode
Complete guide by season
12 Episodes
| # | Episodes | Aired | Type |
|---|---|---|---|
| 1 | In The Far North10/13/2019 | 10/13/2019 | Canon |
| 2 | Raids10/20/2019 | 10/20/2019 | Canon |
| 3 | The Final Load Test10/27/2019 | 10/27/2019 | Canon |
| 4 | Dark Territory11/03/2019 | 11/03/2019 | Canon |
| 5 | The Night Before Battle11/10/2019 | 11/10/2019 | Canon |
| 6 | Battle of the Knights11/17/2019 | 11/17/2019 | Canon |
| 7 | Stigma of the Disqualified11/24/2019 | 11/24/2019 | Canon |
| 8 | Blood and Life12/01/2019 | 12/01/2019 | Canon |
| 9 | Sword and Fist12/08/2019 | 12/08/2019 | Canon |
| 10 | Stacia, the Goddess of Creation12/15/2019 | 12/15/2019 | Canon |
| 11 | Heartless Choice12/22/2019 | 12/22/2019 | Canon |
| 12 | Ray of Light12/29/2019 | 12/29/2019 | Canon |
Verified legal platforms
Where to watch Sword Art Online: Alicization - War of Underworld
All the platforms where you can watch Sword Art Online: Alicization - War of Underworld legally, with direct links to each service.
We don't have confirmed streaming platforms for this anime yet.
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Common questions
Frequently asked questions
How many seasons does Sword Art Online: Alicization - War of Underworld have?
Sword Art Online: Alicization - War of Underworld has a total of 5 seasons. The series is completed. Each season is divided into multiple episodes with stories that advance the main plot of the anime.
How many episodes does Sword Art Online: Alicization - War of Underworld have?
In total, Sword Art Online: Alicization - War of Underworld has 12 episodes distributed across its 5 seasons. You can consult the complete episodes table to see the breakdown by season.
What is the best order to watch Sword Art Online: Alicization - War of Underworld?
It is recommended to watch Sword Art Online: Alicization - War of Underworld in chronological broadcast order. This means starting from season 1 and continuing sequentially to the last season. Check our watch order guide which includes information about filler vs canon episodes for an optimal experience.
Where can I watch Sword Art Online: Alicization - War of Underworld online?
Sword Art Online: Alicization - War of Underworld is available on the following streaming platforms: official English website. Check the platforms section at the top of this page to access where you can watch the anime. Please note that availability may vary depending on your geographic region.
Watch on: official English website
Is Sword Art Online: Alicization - War of Underworld a complete anime?
Yes, Sword Art Online: Alicization - War of Underworld is a completed anime. All seasons have already aired and you can enjoy the series in its entirety without waiting for new episodes.
How much filler does Sword Art Online: Alicization - War of Underworld have?
No, Sword Art Online: Alicization - War of Underworld does not have filler episodes. All its episodes are canon and faithfully follow the original manga story, so you can watch all episodes without worrying about skipping anything.
Where can I see Sword Art Online: Alicization - War of Underworld's score and reviews on MyAnimeList?
You can check the score, reviews, characters and statistics for Sword Art Online: Alicization - War of Underworld directly on MyAnimeList, the world's largest anime database. There you'll find the community rating, global ranking and opinions from other fans.