Sword Art Online

Sword Art Online (2012 – 2020)

2012 • 4 seasons • Animation, Sci-Fi & Fantasy • TV-MA

On August 8, 2026

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1519th by attention TV show online

40.3 Attention Score

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photo from the episode

Episode 21 — The Truth about Alfheim

Season 1 • Sword Art Online

Released: 2012-11-25 • Animation/Sci-Fi & Fantasy/Action & Adventure

73%

User score

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

Episodes

Episode 1
The World of Swords
2012-07-08

Episode 2
Beater
2012-07-15

Episode 3
The Red-Nosed Reindeer
2012-07-22

Episode 4
The Black Swordsman
2012-07-29

Episode 5
Murder in the Safe Zone
2012-08-05

Episode 6
Illusionary Avenger
2012-08-12

Episode 7
The Temperature of the Heart
2012-08-19

Episode 8
The Sword Dance of Black and White
2012-08-26

Episode 9
The Blue-Eyed Demon
2012-09-02

Episode 10
Crimson Killing Intent
2012-09-09

Episode 11
The Girl of Morning Dew
2012-09-16

Episode 12
Yui's Heart
2012-09-23

Episode 13
Edge of Hell's Abyss
2012-09-30

Episode 14
The End of the World
2012-10-07

Episode 15
Return
2012-10-14

Episode 16
Land of the Fairies
2012-10-21

Episode 17
Captive Queen
2012-10-28

Episode 18
To the World Tree
2012-11-04

Episode 19
The Lugru Corridor
2012-11-11

Episode 20
General of the Blazing Flame
2012-11-18

Episode 21
The Truth about Alfheim
2012-11-25

Episode 22
Grand Quest
2012-12-02

Episode 23
Bonds
2012-12-09

Episode 24
Gilded Hero
2012-12-16

Episode 25
The World Seed
2012-12-23

Information

Episode air date	25.11.2012
Episode runtime	24 min
Episode rating	7.30
Genres	Animation / Sci-Fi & Fantasy / Action & Adventure
TMDB series rating	8.2
IMDb series rating	7.5
Series status	Ended
Age rating	17+
Country	JP

Trailer

Additional videos

Season 2 Teaser

Season 2 Teaser

▶

English Dub Trailer

English Dub Trailer

▶

Cast

Yoshitsugu Matsuoka

Yoshitsugu Matsuoka
Kirito (voice)

Haruka Tomatsu
Asuna (voice)

Hiroaki Hirata
Klein (voice)

Ai Kayano
Alice Synthesis Thirty (voice)

Rina Hidaka
Silica (voice)

Hiroki Yasumoto

Hiroki Yasumoto
Agil (voice)

Isshin Chiba
Critter (voice

Kaori Maeda
Selka (voice)

Taku Yashiro
Iskahn (voice)

Yuhko Kaida
Dee Eye Ell (voice)

Junya Enoki
Lilpilin (voice)

Kanae Itou
Yui (voice)

Miyuki Sawashiro

Miyuki Sawashiro
Sinon (voice)

Ayahi Takagaki
Lisbeth (voice)

Ayana Taketatsu

Ayana Taketatsu
Leafa (voice)

Sanae Kobayashi

Sanae Kobayashi
Rinko Koujiro (voice)

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