Sword Art Online Progressive Barcarolle of Froth, Vol. 1 (manga)

Kirito, having explored the latest beta test, has a pretty good idea of what to expect from the newest SAO launch. With Asuna along, the pair hope to experience the official playthrough together, but there's something about the release that's a little different from before...Certain unexpected tweaks from the previous version have Kirito and Asuna tackling a flood of puzzles anew!