Sword Art Online Progressive 7 (light novel)

The seventh layer of Aincrad-a massive casino where over half of the game'sbeta
testers dropped out before launch. Kirito, too, lost everything in itsMonster Arena back
then. When an informant named Argo seduces Kirito andAsuna with knowledge that
could aid in their investigation, the pair soonplunge into the casino's dark underbelly
once more. Meanwhile, the Elf WarQuest also reaches a sudden turning point when a
flurry of crises rock theDark Elves' home!