Sword Art Online Progressive manga volume 6 features story by Reki Kawahara and art by Kiseki Himura.

The war between elves rages on, with Kirito and Asuna caught in the middle! The forest elves seek the dark elves' Secret Key, but to what end? Though Kirito tries to stay detached, Asuna can't help being swept along for the ride. Kizmel is supposed to be just an NPC, right? But then why does she seem so very human...

Note: This story is an alternate retelling of Sword Art Online from Asuna's point of view.