Sword Art Online Progressive Scherzo of Deep Night manga volume 1 features story by Reki Kawahara and art by Puyocha and abec.

Nearly two months have passed since Kirito and Asuna found themselves trapped in the world of Aincrad. Now, they're making their way through the ruins-themed fifth floor, where all sorts of undead monsters—and player-killers—lurk in the shadows! The story of Sword Art Online continues in this brand-new series!