Kawahara also began writing a parallel series of light novels titled Sword Art Online: Progressive, a reboot of the original Sword Art Online Aincrad Arc. However, instead of covering the arc in one light novel, Kawahara plans to take a floor by floor approach of the Aincrad Arc. The first volume was published on October 10, 2012[6] and two volumes have been published as of December 10, 2013.[7]