Blood River Fortress, a colossal fortress as vast as a small kingdom.
No one could count how many devils resided within the fortress, just as no one could count how many demons had died outside its walls.
Every corner of the walls had been covered by a flesh of corpses, grown over with various malignant tumors of flesh, obscuring their original form completely.
These flesh tumors were neither devils nor demons, but hybrids formed from the flesh of both.
Any creature that approached these tumors would face a lottery, possibly triggering a deadly poison upon contact, perhaps mouths bristling with sharp teeth, or even tentacles equipped with hooks and suckers.
No matter whether you were a demon, a devil, or anything else, these malignant entities slaughtered any life indifferently, even Zariel would be attacked by these monsters upon her arrival.