Log Horizon, Vol. 5 (light novel): A Sunday in Akiba — Mamare Touno

In the sort of autumn afternoon that leaves maidens sighing, new enemies arrive in Akiba! And these enemies are more terrifying than any monster--they're human. Worse, their target is the very system at the heart of the city--the Round Table Council! Will the tenuous government that Shiroe has worked so hard to build survive this latest threat?