In the near future, a Virtual Reality Massive Multiplayer Online Role-Playing Game (VRMMORPG) called Sword Art Online has been released where players control their avatars with their bodies using a piece of technology called Nerve Gear. One day, players discover they cannot log out, as the game creator is holding them captive unless they reach the 100th floor of the game's tower and defeat the final boss. However, if they die in the game, they die in real life. Their struggle for survival starts now...
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see all options Availability data: JustWatch
- Seasons
- 4
- Episodes aired
- 96
- Latest aired
- S04E23
- Total runtime
- 1d 13h
Timeline when each season aired
- Season 1 July 2012 – December 2012 25 episodes
- the show was away for 1 year and 6 months
- Season 2 July 2014 – December 2014 24 episodes
- the show was away for 3 years and 9 months
- Season 3 October 2018 – March 2019 24 episodes
- Season 4 October 2019 – September 2020 23 episodes
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S03E01 Underworld
October 7 · 47min find the promo
Show synopsis
Kirito, along with his childhood friend, Eugeo, has been tasked with cutting down a colossal tree called the Gigas Cedar. They’re swinging their ax when their friend Alice arrives with lunch. As they eat, the three friends decide to go to a fabled cave.
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S03E02 The Demon Tree
October 14 · 23min find the promo
Show synopsis
Kirito wakes up to find himself inside a mysterious world evoking a fantasy game. His memory fuzzy, he tries to log out, but is unable to return to the real world. After wandering aimlessly, he finds himself underneath a colossal tree.
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S03E03 The End Mountains
October 21 · 23min find the promo
Show synopsis
Kirito makes up his mind to journey to Centoria. Since he'll need Eugeo's help, he also decides to fell the Gigas Cedar. Meanwhile, Alice's little sister, Selka is worried about Eugeo, and opens up to Kirito about her concerns.
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S03E04 Departure
October 28 · 23min find the promo
Show synopsis
Kirito and Eugeo realize Selka has taken off to the End Mountains alone, and decide to chase after her. As they enter the cave, they encounter goblins, presumably from the Dark Territory, and must engage in a battle.
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S03E05 Ocean Turtle
November 4 · 23min find the promo
Show synopsis
In the real world, Kazuto Kirigaya lies unconscious. At Kikuoka’s request, Kazuto is moved to a well-equipped hospital, but when Asuna and Suguha try to visit, they’re turned away. Suspicious, Asuna and the others split up to find out more about Rath.
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S03E06 Project Alicization
November 11 · 23min find the promo
Show synopsis
Asuna infiltrates Rath, the research lab in the Ocean Turtle, where she relentlessly grills Kikuoka about Kazuto's whereabouts. Kikuoka reveals that behind the development of the Soul Translator is a mind-blowing objective of epic scale.
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S03E07 Swordcraft Academy
November 18 · 23min find the promo
Show synopsis
Two years have gone by since Kirito and Eugeo left Rulid Village. In the capital city, Centoria, both boys have attained their goal of being admitted to the North Centoria Imperial Swordcraft Academy.
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S03E08 Swordsman's Pride
November 25 · 23min find the promo
Show synopsis
Kirito finds himself in a duel against the Elite Disciple Volo Levantein, using real swords. As the curious crowd looks on, Kirito is encouraged by Sortiliena, and the duel begins.
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S03E09 Nobleman's Responsibilities
December 2 · 23min find the promo
Show synopsis
Now an Elite Disciple along with Kirito, Eugeo struggles with the question of what he should infuse in his sword so he can become stronger. When he's taunted by First-Seat Elite Disciple Raios and Second-Seat Humbert, Eugeo decides to accept Humbert's request for a duel.
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S03E10 Taboo Index
December 9 · 23min find the promo
Show synopsis
Ronie and Tiese are late getting to the dorm. Kirito rushes out in search of them, but no sooner has he gone than Frenica appears. She tells Eugeo about how she's suffered at Humbert's hands, and that Tiese and Ronie went to confront him about it.
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S03E11 Central Cathedral
December 16 · 23min find the promo
Show synopsis
Kirito and Eugeo are now considered criminals for having violated the Taboo Index and are thrown into the underground prison in the Central Cathedral. Meanwhile, on the Ocean Turtle in the real world, Asuna is watching over Kazuto as he's being treated.
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S03E12 The Sage of the Library
December 23 · 23min find the promo
Show synopsis
Kirito and Eugeo escape from their cell, only to find their way blocked by Eldrie Synthesis Thirty-One, under orders from Alice to lie in wait for them. Kirito and Eugeo struggle against him until Eugeo realizes that he's seen Eldrie somewhere before.
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S03E13 Ruler and Mediator
January 6 · 23min find the promo
Show synopsis
Kirito and Eugeo have been rescued by the young girl, Cardinal, who has secluded herself inside the Central Cathedral’s Great Library. Cardinal explains to Kirito how the Axiom Church and the Taboo Index came to be, starting with Administrator’s past.
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S03E14 The Crimson Knight
January 13 · 23min find the promo
Show synopsis
After being entrusted with the fate of the world by the Cardinal, Kirito and Eugeo head to the top floor of the Central Cathedral. On the way, they find their confiscated swords among a vast pile of weapons in an arsenal, only to be greeted with a hail of arrows by the Integrity Knight, Deusolbert Synthesis Seven.
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S03E15 The Relentless Knight
January 20 · 23min find the promo
Show synopsis
Kirito and Eugeo are on their way up the stairs of the Central Cathedral when they encounter two girls named Linel and Fizel. As they stand, wondering what two children are doing there, they let their guard down and...
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S03E16 The Osmanthus Knight
January 27 · 23min find the promo
Show synopsis
Though riddled with wounds, Kirito manages to activate his Perfect Weapon Control art. Continuing on their way to the top floor of the Central Cathedral, Kirito and Eugeo find themselves standing before a strange-looking floating platform.
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S03E17 Truce
February 3 · 23min find the promo
Show synopsis
When Kirito and Alice both unleash the Perfect Weapon Control art in the Cloudtop Garden, the impact rips a hole into the seemingly impregnable Central Cathedral wall, which sends them both flying outside.
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S03E18 The Legendary Hero
February 10 · 23min find the promo
Show synopsis
Eugeo reaches the ninetieth floor of the Central Cathedral, which turns out to be a vast bathing area. The perplexed Eugeo encounters Bercouli Synthesis One soaking in the bath. Meanwhile, Kirito and Alice are still climbing the Central Cathedral wall.
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S03E19 The Seal of the Right Eye
February 24 · 23min find the promo
Show synopsis
Seeing Alice’s reaction when he mentioned the name Selka, Kirito decides to tell her the truth about the Integrity Knights. Meanwhile, after being knocked unconscious during his battle with Bercouli, Eugeo awakes on the top floor of the cathedral.
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S03E20 Synthesis
March 3 · 23min find the promo
Show synopsis
Kirito and Alice reach the communal bath on the nintieth floor. There, they find the Integrity Knight Commander, Bercouli, who's been turned to stone by Chudelkin. Alice breaks down in tears upon seeing her mentor's tragic plight, but then...
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S03E21 The 32nd Knight
March 10 · 23min find the promo
Show synopsis
Standing in Kirito and Alice's way is Eugeo, who's undergone the Synthesis Ritual and become an Integrity Knight. Kirito is rattled, until Alice admonishes him into resolving to fight Eugeo with everything he's got.
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S03E22 Titan of the Sword
March 17 · 23min find the promo
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On the top floor of the Central Cathedral, Kirito, Eugeo, and Alice finally face Administrator. But Chudelkin uses the sacred arts to transform himself into a giant clown and attacks.
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S03E23 Administrator
March 24 · 23min find the promo
Show synopsis
Cardinal appears on the top floor of Central Cathedral for a showdown with her bitter foe of the last two hundred years. She moves to achieve her objective of deleting Administrator, only to see the fallen sword golem rise up again.
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S03E24 My Hero
March 31 · 23min find the promo
Show synopsis
Carrying the hopes of Cardinal, Eugeo, and Alice in his heart, Kirito stands yet again and visualizes the Black Swordsman, the top player who cleared SAO. For the sake of everyone he’s encountered in this world, Kirito, faces off with Administrator.