Sword Art Online Hollow Realization manga volume 4 features story by Reki Kawahara and has art by Tomo Hirokawa.

After the raid is interrupted by Kizmel's sudden entrance, the dark elf tells Kirito and Asuna about the Six Sacred Stones and the two goddesses living within game. Upon Seven's advice, Kirito visits the game operators for more clues, only to find the shocking truth behind Sword Art: The Origin!