A year after Kazuto and Asuna escaped from Aincrad, the deadly setting of Sword Art Online, they're still coping with the aftermath as they try to recover from the harrowing experience. Meanwhile, there's a new VRMMO game sweeping the world's gamers--Gun Gale Online. When a mysterious player who calls himself "Death Gun" claims to be responsible for real-world deaths, Kazuto (aka Kirito) is recruited to enter the game to investigate, bringing an end to his hard-won peace!

Kirito has entered the new VRMMO Gun Gale Online in order to investigate the Death Gun incidents, only to discover his avatar is not exactly how he remembers it! He barely knows up from down in this new world, and he needs an ally. He may have found one in the mysterious female sniper Sinon, but she's got an agenda of her own...

It's time for the "real" SAO--the third floor! Kirito and Asuna are hardly out the door when they stumble upon the start of the Elf War quest. When they decide to side with the elite dark elf Kizmel, they're set on a path that will push them harder than ever before. But together, nothing can stop them...right?

Determined to put a stop to Death Gun’s killing spree, Kirito and Sinon are competing in the Bullet of Bullets tournament. With only six players remaining, the stakes are higher than ever, and Sinon knows the only way to put her traumatic past behind her is to take Death Gun down once and for all. But after Kirito starts to suspect a real-world accomplice is involved, the situation gets even more complicated...How can Kirito and Sinon hope to win against two murderers in two different worlds? The action heats up in Phantom Bullet’s thrilling finale!

Kirito and Sinon's battle with Death Gun is over, but mere weeks later, something strange is afoot in the next-generation VRMMO ALfheim Online. A new duelist with a custom sword skill is defeating all comers--including Kirito! But when Asuna goes to face this duelist, she receives something she never expected: an invitation to an exclusive guild! But what is their aim? The Mother's Rosario arc begins!

Karen is living her best life, getting to play as her cute chibi avatar Llenn in the VR game Gun Gale Online. She becomes fast friends with mysterious woman Pitohui, who invites her to an in-game event called the Squad Jam. But Karen won't be teamed up with her new friend-instead she gets paired with the stern and silent M. Not 10 minutes into the event, they get surrounded by a hail of gunfire! Will they be able to hold their own as a two-man team against squads with actual military training...? Hey, wasn't this supposed to be just a game?!

Kazuto Kirigaya (aka Kirito) has beaten Sword Art Online, a VRMMORPG that transformed into a literal game of death, and returned to the real world. Unfortunately, the same cannot be said for Asuna Yuuki (aka Asuna the Flash), the girl with whom Kirito fell in love in the virtual world of Aincrad but who has yet to awaken from her game-induced slumber. As his sister, Suguha, sadly looks on, Kazuto continues to visit Asuna in the hospital in the hope of finding answers. But when one day he meets a man claiming to be Asuna's fiancé, Kazuto fears that Asuna may be lost to him forever... That is until a fellow survivor of SAO taken form the latest VRMMORPG sensation, ALfheim Online - a screenshot that features someone being held captive who looks entirely too much like Asuna! His hope renewed, Kirito dives headlong into an all-new virtual adventure, but can true love conquer the game?!

While Nezha attempts to atone for his misdeeds, the battle against Sword Art Online's second-floor boss begins! Kirito's uneasy alliance with the other front-runners seems to be holding, but what will happen when the floor boss corners them? Can Nezha rise to the occasion and seize a hero's prize?

In the year 2022, gamers rejoice as Sword Art Online - a VRMMORPG (Virtual Reality Massively Multiplayer Online Role Playing Game) like no other - debuts, allowing players to take full advantage of the ultimate in gaming technology: NerveGear, a system that allows users to completely immerse themselves in a wholly realistic gaming experience. But when the game goes live, the elation of the players quickly turns to horror as they discover that, for all its amazing features, SAO is missing one of the most basic functions of any MMORPG - a log-out button. Now trapped in the virtual world of Aincrad, their bodies held captive by NerveGear in the real world, users are issued a chilling ultimatum: conquer all one hundred floors of Aincrad to regain your freedom. But in the warped world of SAO, "Game Over" means certain death - both virtual and real...

Sword Art Online, the world's first VRMMORPG (Virtual Reality Massively Multiplayer Online Role Playing Game), may have started out as a game, but it has since become a matter of life and death for the ten thousand players trapped within. Two years after game programmer Akihiko Kayaba's chilling declaration--"This might be a game, but it's not something you play"--the number of players has dwindled to six thousand, and for many, every day is a struggle for survival. Though Kirito has stayed alive by making a name for himself as a solo adventurer in that time, his life undergoes a major change when he unwittingly joins Asuna's powerful guild, the Knights of the Blood. What does fate have in store for Kirito, Asuna, and the brave young fighters who are risking their lives to return to the real world?!