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Season guide

Sword Art Online: Sword Art Online

25 episodes Premiered Jul 8, 2012 Updated Jul 21, 2026

Sword Art Online is a Japanese anime television series. The series is set in the near future where a Virtual Reality Massive Multiplayer Online Role-Playing Game (VRMMORPG) called Sword Art Online has been released. Players control their avatars with their bodies using a piece of technology called Nerve Gear. The game creator has trapped the players inside the game, and they must reach the 100th floor of the game's t

Season overview

Sword Art Online is a Japanese anime television series. The series is set in the near future where a Virtual Reality Massive Multiplayer Online Role-Playing Game (VRMMORPG) called Sword Art Online has been released. Players control their avatars with their bodies using a piece of technology called Nerve Gear. The game creator has trapped the players inside the game, and they must reach the 100th floor of the game's tower and defeat the final boss to escape. If they die in the game, they die in real life. The series follows the players' struggle for survival.

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Season 1 Episodes

Episode Guide

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Binge Efficiency Engine

Season 1: Filler vs. Essential Canon

Filter episodes by narrative weight. Focus on essential mytharc and skip standalone side quests.

12%
88%
Mytharc (3): Crucial lore & season climaxes
Core (22): Character development & subplots
Side Quest (0): Standalone / filler
S1·E1 Mytharc

The World of Swords

Jul 8, 2012 · 23 min

It's launch day for one of the most highly-anticipated video games of all time. Join the character "Kirito" as he begins his journey in the virtual world of Sword Art Online.

S1·E2 Core

Beater

Jul 15, 2012 · 23 min

It’s been one month since the players have been locked in the game. 2000 people have died; the first floor hasn’t been cleared yet.

S1·E3 Core

The Red-Nosed Reindeer

Jul 22, 2012 · 23 min

Kirito has finally joined a guild made up of close friends in reality. Everything is going well until a tragic accident changes Kirito completely.

S1·E4 Core

The Black Swordsman

Jul 29, 2012 · 23 min

Silca is known as Dragon Tamer Silca, but after leaving her group she is caught and her pet, Pina paid the ultimate price. Before she is killed, Kirito saves her and offers her a

S1·E5 Core

Murder in the Safe Zone

Aug 5, 2012 · 23 min

A player has been killed inside a safe zone and not by the known means. Asuna and Krito take it upon themselves to find out how and why this is happening.

S1·E6 Core

Illusionary Avenger

Aug 12, 2012 · 23 min

Kirito has figured out the how and now he has to figure out the why.

S1·E8 Core

The Sword Dance of Black and White

Aug 26, 2012 · 23 min

After 2 years, people have got used to living in SAO, with a dwindling front line it might just be up to Kirito and Asuna to continue the charge.

S1·E9 Core

The Blue-Eyed Demon

Sep 2, 2012 · 23 min

To save a group of players and Asuna from a Boss character, Kirito is forced to play his trump card.

S1·E10 Core

Crimson Killing Intent

Sep 9, 2012 · 23 min

Kirito has agreed to a duel with the head of the Blood Alliance Knights. If Kirito wins, Asuna is free to leave the Knights and if he loses…

S1·E11 Core

The Girl of Morning Dew

Sep 16, 2012 · 23 min

The newly married couple is enjoying their time away from the front lines. But a new guest will take them all the way back to the beginning.

S1·E12 Core

Yui's Heart

Sep 23, 2012 · 23 min

Yulier, second in command, of the Liberation Army has approached Kirito and Asuna for help saving her friend and her guild.

S1·E13 Core

Edge of Hell's Abyss

Sep 30, 2012 · 23 min

While enjoying a fishing tournment Kirito receieves an urgent e-mail from the leader of the guild requesting their return.

S1·E15 Core

Return

Oct 14, 2012 · 23 min

Kirigaya is adjusting to his life outside of the game, but he hasn't forgotten about Asuna. A recent visit to her in the hospital, he meets Sugou Nobuyuki.

S1·E16 Core

Land of the Fairies

Oct 21, 2012 · 23 min

A new MMO allows users to fly and encourages player killing. Kirito has joined this new game in search of Asuna and is pleasantly surprised with what he finds.

S1·E17 Core

Captive Queen

Oct 28, 2012 · 23 min

As Kirito learns about the game from Leafa and the hatred between the races, Asuna learns the truth of her role from the Fairy King.

S1·E18 Core

To the World Tree

Nov 4, 2012 · 23 min

Leafa is making enemies leaving her area and group to team up with Kirito. On their way to neutral Territory, they speak more of the rules and areas of the ALO.

S1·E19 Core

The Lugru Corridor

Nov 11, 2012 · 23 min

Something isn’t right; Recon has sent Leafa a message “I was right. Be careful. S." What does he mean and will Leafa and Kirito have the time to figure it out?

S1·E20 Core

General of the Blazing Flame

Nov 18, 2012 · 23 min

Kirito and Leafa have made it to the meeting and Kirito’s bluff as an ambassador has been called out. If he can survive in a fight against the Salamanders General Eugene, his plan

S1·E21 Core

The Truth about Alfheim

Nov 25, 2012 · 23 min

While Asuna continues her attempt to escape, another woman in Kirito’s life tries to make sense of her emotions.

S1·E22 Core

Grand Quest

Dec 2, 2012 · 23 min

Kirito’s determination to save Asuna borders on the insane. His reckless is stopped when Leafa suddenly logs out.

S1·E23 Core

Bonds

Dec 9, 2012 · 23 min

Even though a wall has been built between Kirito and Sugu, he must save Asuna. The next time he challenges the final dungeon he won’t be alone.

S1·E24 Mytharc

Gilded Hero

Dec 16, 2012 · 23 min

Kirito, Asuna, and Yui are finally together again, but the locks placed on Asuna are unbreakable. Before they have a chance to come up with a plan, the fairy king makes his grand

S1·E25 Mytharc

The World Seed

Dec 23, 2012 · 25 min

Kirigaya Kazuto has beaten death twice but there is one more thing he must do.