From Baka-Tsuki: This series is a reboot of the SAO Aincrad Arc starting from a day or two before the clearing of the First Floor Boss, and continuing onwards. The first chapter was included in the Anime despite not being part of the main Light Novel series. Note: Please be advised that the side stories in this series have some changes from the original web versions of the Sword Art Online main story.
Sword Art Online: Progressive (Novel)
