Penumbra

A place of gloom and dreams worthy of the Goddess of Terror herself is Penumbra. The biome is diverse, with pockets of charcoal land interspersed with vast pools of darkness. This tries to humble even the most courageous and arrogant of explorers who dare travel within, bringing one's worst fears to life. Although many view Penumbra as an awful region full of horrors, many others view it as a hallowed domain and make it a point to visit it on a pilgrimage because they believe that only after confronting genuine fear can one achieve a state of complete devotion to the lady of dread and utter humility.

In nightmares, one's soul finds itself in Penumbra, where they can see ephemeral representations of the living moving in and out of the space. The creatures who inhabit it would pursue these souls and eat a very small portion of them for sustenance, even though they greatly prefer living flesh. One could physically enter Penumbra through shadow magic, simply by entering a shadow one could end up in Humility's Realm, though prolonged stay could be dangerous as there are countless beings that remain unidentified and too far dangerous to study. The Umbreel and Dangler are the only two to be identified.