Amazon.com: Sword Art Online Progressive, Vol. 4 - manga (Sword Art Online Progressive Manga, 4): 9780316314657: Kawahara, Reki, Himura, Kiseki: Books
Amazon.com: Sword Art Online Alternative Gun Gale Online, Vol. 1 (manga) (Sword Art Online: Alternative Gun Gale Online, 1): 9780316442411: Kawahara, Reki, Sigsawa, Keiichi, Tamori, Tadadi: Books
Amazon.com: Sword Art Online 23 (light novel): Unital Ring II: 9781975321765: Kawahara, Reki: Books