World of Toril.
A hidden dungeon somewhere.
This place had been built inside a super large underground cave.
Although even the outer regions alone looked rather ancient.
Perhaps because the various servant creatures cleaned it regularly, the environment here actually appeared fairly tidy.
Even if it could not compare to those large cities on the surface, it was still far beyond the reach of most dungeons.
At the very least, the slave creatures here, having received some basic training, knew not to relieve themselves everywhere and had not turned the place into a floor of filth and urine!
It was, at any rate, of an excellent standard...
If the many adventurers saw it, they would surely give it a thumbs-up, naming it one of the Top Ten Outstanding Dungeons and the Best Monster Grinding Spot!
After all, if they had a choice, who would want to experience mountains of shit and seas of piss in the relatively sealed environment of a dungeon...
That was an environment straight out of Hell!!
Even with adventurers bolstered by Supernatural Power.
The various indescribable illnesses brought about by such a vile environment still tormented them until they wished they were dead...
Yet few knew that beneath the outer regions of this dungeon, which seemed to possess no special traits beyond being relatively clean, countless Magic Veins had actually been buried.
Centered on the entire dungeon, they formed an immensely complex and exorbitantly expensive Magic Barrier.
Even when it remained in a half-dormant state and had not been fully activated, it was like an inescapable net cast across heaven and earth, monitoring everything within its range in real time.
Even the finest assassins and thieves would have absolutely no way to conceal their tracks here!
And once fully activated, the layers upon layers of Magic