Originally based on a novel by Reki Kawahara, Sword Art Online is an acclaimed anime series that follows the adventures of its young protagonist, Kirito, within the next-generation Virtual Reality Massively Multiplayer Online Role-Playing Game known as Sword Art Online. This latest entry in the series is based on an all-newWar of Underworldstory arc unique to this game and features more characters and episodes than ever before in order to portray a setting different from that of the source material and anime. Story If Kirito and Eugeo were here... The threat of annihilation draws near for Underworld, a virtual world designed to give birth to the supreme AI known as A.L.I.C.E. TheFinal Stress Testserved as the beginning of the end... The gate dividing the Human Realm and the Dark Territory has been thrown open, causing the shadow of war to be cast over the two realms. Just then, a dark knight accompanied by a young girl bursts through the gate before Kirito and his compani