Primordial Sin

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There are seven sins and seven princes of hell, each one is in a certain layer of hell, and there are eight, the first one is the Limbo and there are no archdemons here, apparently. This place is where most of the low-rank demons' dwell, which are often attacked by low-rank angels such as cherubins that want to grow stronger by slaying evil beings.

But there are also all sorts of terrifying monsters too, so its not an easy play to live. But I would say this is the only "mortal realm" within the entirety of the Hell, down there everything seems to get ballistic and stronger. You might be unlucky a run into a powerful Archdemon from the get-go.

Talking about the Limbo, I wonder how people manage here, the Imps barely do it every day, so I might as well assume most of the low-ranked demon tribes cannot properly handle living in here with giant demonic monsters roaming everywhere.