Sword Art Online - Aincrad Night of Kirito (manga volume)

Sword Art Online - Aincrad Night of Kirito (ソードアート・オンライン キリトの) is the tankoubon of a manga-original spin-off based on Sword Art Online: Hollow Fragment.

Preview
On a sleepless night, Kirito casually began a quest, and to clear it, he needs to "Avoid getting in bed with a girl"! Also, if he fails the quest, the girl who got into bed will become naked……!? As Asuna, Leafa, Strea, and other charming heroines push him to a corner, will Kirito be able to resist the temptation!!? A 4-koma comic specialising in bed scenes, set in the world of Sword Art Online: Hollow Fragment!!