A doujinshi co-authored by Kawahara Reki, under the pen-name of Kunori Fumio, and Kurusu Tatsuya on Sword Art Online.

Note: Part comic/novel doujinshi. Novel by Kawahara Reki, manga by Kurusu Tatsuya.

The contents are: "The Final Promise" "A Spot of Sunshine in the Winter"