Sword art online

"Liz, Silica, Leafa, and Lux have been enjoying their adventures in ALO to the fullest, but when a shadow from the past returns, Lux's time with her new friends may have reached an abrupt end. Of course, the other girls aren't about to just turn their backs on a friend in need, but some sins may not be so easily forgiven... Are the girls' ops officially over?!"--Back cover.