Welcome to Sword Art Online (ソードアート・オンライン)!!
All fans of the anime, manga, and light novel are all welcomed!! Join Kazuto Kirigaya, also known as Kirito, as he ventures through the 100 floors of Aincrad and much more!!
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Official Website : http://www.swordart-online.net/
Anime News Network page : http://www.animenewsnetwork.com/encyclopedia/anime.php?id=13858