Sword Art Online Progressive 8 (light novel)

The protracted secret feud between the Nachtoy and the Korloy families, whocontrol the casino on the seventh floor, takes an unpredictable turn when Kiritoand Asuna intervene. But when Kirito attempts to expose the misdeeds of theKorloy family, he ends up stumbling into a trap. Now he has just two days tounravel a mystery, put an end to an unscrupulous conspiracy, and defeat thefloor boss. It’s all leading up to a showdown in the arena whereeverything’s on the line!