Sword Art Online Progressive 7 (Light Novel)

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