Sword Art Online is a video game that reimagines the original story of Sword Art Online in a new anime series. Players explore and battle through entirely new, vibrant worlds from the game with stunning graphics. Sword Art Online is an anime series adapted from Reki Kawahara's light novel series of the same name. It follows a boy named Kirito and a girl named Asuna as they explore an online virtual reality world called Sword Art Online.