Maeng JuKyung (맹주경)

Kill monsters, save your neighbors, and expand your domain, all from the comfort of your couch. When his city becomes infested with monsters, Jaehyeon discovers an ability that makes him the absolute master of his apartment building. But his ability comes with a catch -- he cannot leave his apartment. Now, he must arm his neighbors and lead them beyond their building to survive the post-apocalyptic world they find themselves in.

Oh Kangwoo the Demon King has had it with ruling over Hell and wants to return to Earth. But when he finally gets there, not only are his powers sealed, but the Earth he once knew has turned into an MMORPG free-for-all. Dimensional gates have appeared all over the world, and "players" enter them to make a living by hunting monsters. If Kangwoo wants to survive in this dangerous game, he's going to have to level up, and fast. But for this demon king, hell on earth might be worse than Hell itself!