Death Realm
A parallel world filled with undeath and torment. The demon Akünh is a spawn of SHE and a demonic being from this realm — conceived in unholy bonding between the basilisk and the entity. The realm is shut out from the world of the living by ancient covenant, but its inhabitants always gaze hungrily upon it.
The Death Ziggurat itself sits in this parallel world. From the living world one finds only a barren waste swarming with undead; the actual ziggurat requires a Rot Priest medallion to enter. Inside the Death Realm, the ziggurat and its necropolis stand within a walled enclosure with a single far entrance.
Akünh's "channeling" is a tornado-cloud of power drawn from her demonic parent in the Death Realm — power she uses to raise her undead army before the world ends.
Akünh, SHE, Death Ziggurat, Creton Order, Rot Priest, Necropolis
Akünh's demonic parent is unnamed. The covenant that shut the realm out is unwritten. Other beings native to the Death Realm (besides Akünh's lineage and undead) are blank. Whether the realm's incursions tie into Misery 6:6 (Daejmon tearing the Veil) is suggestive but uncanonical.