Sword Art Online Alternative Gun Gale Online, Vol. 5 (light novel), Paperback/Reki Kawahara

"Not looking forward to her rematch with the trigger-happy Pito, Llenn and her new teammates are escorted to the mysterious UNKNOWN area at the center of the sinking map, surrounded by a thick fog. As bullets of betrayal fly past former allies, the fog finally clears to reveal...a luxury cruise ship?!"--