Chapter 439 That's a Demon (Double-Feature)
Simply put, a massive number of Black Mages had suddenly appeared in the magical world. Wielding wicked and bizarre Black Magic, they caught ordinary wizards completely off guard, resulting in a heavy toll of casualties.
Emergency deployments of wizard police proved largely ineffective; instead, many were ambushed and killed. This threw the order of the entire magical world into chaos.
Chapter 391