"First published in Japan in 2021 by Kadokawa Corporation, Tokyo"--Copyright page.

The party is shaken when their leader, Diavel, is struck down by the boss of the very first floor. Asuna and her teammates are confronted for the first time with the cruel reality of their situation: Sword Art Online is no mere game--death here is final. Their commander lost, the remaining fighters begin to lose heart and plan their retreat. But the fight must go on if they are to escape this game world, and in his dying moments, Diavel managed to convey his appointment for the next commander--Kirito!

A RACE AGAINST THE CLOCK! The secret feud between the Nachtoy and the Korloy families, who control the Volupta Grand Casino on the seventh floor, takes an unprecedented turn when Kirito and Asuna intervene. But when Kirito attempts to expose the Korloy family’s misdeeds, he ends up stumbling into a trap. Now he has just two days to unravel a mystery, put an end to an unscrupulous conspiracy, and defeat the floor boss. It’s all leading up to a showdown in the arena where everything’s on the line!

"There's no way to beat this game. The only difference is when and where you die..." One month has passed since Akihiko Kayaba's deadly game began, and the body count continues to rise. Two thousand players are already dead. Kirito and Asuna are two very different people, but they both desire to fight alone. Nonetheless, they find themselves drawn together to face challenges from both within and without. Given that the entire virtual world they now live in has been created as a deathtrap, the surviving players of Sword Art Online are starting to get desperate, and desperation makes them dangerous to loners like Kirito and Asuna. As it becomes clear that solitude equals suicide, will the two be able to overcome their differences to find the strength to believe in each other, and in so doing survive? Sword Art Online: Progressive is a new version of the Sword Art Online tale that starts at the beginning of Kirito and Asuna's epic adventure--on the very first level of the deadly world of Aincrad!

After reaching the second floor of Aincrad, Asuna decided to have a player controlled blacksmith upgrade her beloved sword, a rare Wind Fleuret--but when the unimaginable happened and the sword was shattered in the attempt, Kirito suspected foul play. Did the blacksmith really just happen to destroy an incredibly valuable item? And if not, is there any way to get it back? And--if there really is a conspiracy of thieves--how can they be stopped before they spread too much mistrust? The game of death is bad enough already!

It's been just two months since they were trapped in the game of death that is Sword Art Online, and Kirito and Asuna continue their struggle at the vanguard of progress through the game. The fifth floor of Aincrad is a mazelike ruin, and the two dare to take pleasure in raiding it for the treasure it contains. Upon returning to the fourth floor, it's time to do some questing on behalf of the Elf Lord Yofilis--but here begins Asuna's discontent, for in doing so they will have to face her least favorite monster ever...

After successfully untangling themselves from a dangerous encounter with the Black Poncho Man and clearing the fifth floor of Aincrad, Kirito and Asuna head to the next challenge, an area filled with...puzzles? What's more, because of the precarious balance of power between two large guilds aiming for the same item, "The Flag of Valor", there's also a murderous PK group to be wary of. As the problems seem to pile up, Kirito and Asuna face the sixth floor of Aincrad completely unaware of the malicious trap awaiting them!!