Sword Art Online Progressive Volume 2 (ソードアート・オンライン プログレッシブ 002, Sōdo Āto Onrain Puroguresshibu 002 Sword Art Online Progressive Volume 2?) is the second installment in the "Progressive" series, a reboot of the original Sword Art Online light novel series written by Kawahara Reki. This volume covers the events that took place while clearing the 3rd Floor of Aincrad. It was released on December 10, 2013.