Sword Art Online: Phantom Bullet Manga Series by Reki Kawahara, Koutarou Yamada

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 wielding an item he calls the "Death Gun" claims to be responsible for real-world deaths, Kazuto 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...

With the prelims over, it's time to head into the main event-the Bullet of Bullets tournament! But this fun free-for-all has turned into an IRL death match when a member of SAO's Laughing Coffin raises the stakes. Can Sinon and Kirito figure out who Death Gun is before it's too late?!