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A year has passed since the events of Sword Art Online (Season 1), Kazuto Kirigaya (Username: "Kirito") is living peacefully back in the real world with Asuna Yuuki (Username: "Asuna"). However, he is recruited by Kikuoka Seijiro of the Ministry of Internal Affairs' Virtual Division to investigate in a new series of killing in a Virtual Reality MMORPG game called "Gun Gale Online". The character named "Death Gun", is suspected for already causing two deaths of GGO players via shooting their avatars in the game, somehow coincidentally causing their real body to suffer an acute heart attack. Can Kazuto reveal the secret link that leads to death via the Virtual World, or will he himself become a victim to the judgement player "Death Gun"?
A player named "Death Gun" uses a Norinco Type 54 "Black Star" as his sidearm he uses to supposedly murder players in "Gun Gale Online".
FN Five-seveN
"Sinon"'s HUD symbol for her sidearm, which is a Glock 18C, is a FN Five-seveN
Glock 18C
"Sinon" uses a Glock 18C as her secondary weapon. Oddly, her HUD shows an FN Five-seveN instead.
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Unknown Pistol
"Ginrou" is seen dual-wielding some unknown pistols in the "Gun Gale Online" introductory sequence.
Submachine Guns
Uzi
A player wielding a Uzi can be seen in the opening.
Calico M900
Calico M900 in the long barreled, semi automatic carbine configuration without the M951 style foregrip is seen in the hands of "Dark Wind" during the introduction sequence of Gun Gale Online.
Rifles
FAMAS G2
Player "Lightly Salted Tarako" is seen using a FAMAS G2 as his main weapon.
Mk. 18 Mod 0
A Mk. 18 Mod 0 is seen in an introduction sequence of "Gun Gale Online".