Download or read book Sword Art Online: Girls' Ops, Vol. 4 written by Reki Kawahara and published by Yen Press LLC. This book was released on 2017-10-31 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lux's dark past with SAO 's Laughing Coffin guild has been revealed-along with the bad blood she shares with Gwen, leader of the Batty Bats. When the girls are sent on a quest to eliminate Gwen, will Lux be able to follow through and betray her former friend yet again...?