Sword Art Online Alternative Gun Gale Online, Vol. 5 (light novel‪)‬

A brand-new battlefield awaits!
As the third Squad Jam begins to wind down, the special rule takes effect. One player from each group is chosen to become a part of the new Team Betrayers and fight against their friends! LPFM-one of the favorites to win it all-has lost a crucial member, and Pitohui couldn't be happier to have been picked. Not looking forward to her rematch with the trigger-happy lunatic, Llenn is forced to watch as Pito gets escorted to the mysterious Unknown area at the center of the sinking map, which is surrounded by a thick fog. As bullets of betrayal fly past former allies, the fog finally clears to reveal...a luxury cruise ship?!