アースウィズダンジョン　〜世界を救うのは好景気だよね (Associated Names)

A dungeon has appeared on the earth. It’s a dungeon, like what everyone knows, a template dungeon. Suddenly, monsters appear in the dungeons that appear in various places, using a power that humans had never seen, like casting magic. The Earth, which has come to coexist with such dungeons, has been filled with unknown lifeforms,…