29, everyone get up and let's get lively!

Hearing that familiar voice, Le Cheng's eyes lit up involuntarily. It seemed his previous guess was indeed correct: this real world was also, in some sense, a dungeon world, and moreover... it was Nightmare Level!

There are in total five difficulty levels for dungeon worlds, from low to high they are—Common, Hard, Hell, Nightmare. Each level, if subdivided, can also be graded with one star to three stars, similar to Half-step Peak Perfection, but the overall difference isn't big. Above Nightmare, there exists an even higher difficulty, but it can only be unlocked after clearing a Nightmare dungeon first.

Since Saint Elizabeth is a Nightmare Level dungeon, then Area 51 and the No. 33 Club, which are named along with it as the Three Forbidden Lands, must also be of similar heavyweight class. Even if you look across the whole world, there must be many, many such dungeons.

Oh Moxiroi!