Log Horizon, Vol. 3 (light novel): Game's End, Part 1

(Volume 2)
Even as peace has seemingly been restored, unrest churns beneath the surface in the town of Akiba. Unable to contain his frustration at his discovery of the capture of his students—the twins Tohya and Minori—Shiroe finally makes his move. Will his eleven handpicked veterans be able to restore hope to Akiba...?