Brief introduction
Outer City: A place where ordinary people + enslaved demons/orcs live together. The black market is also in the outer city. Demons are traded, eaten and bred as commodities here. It is chaotic, dirty and has no rules.
Inner City: A gathering place for advanced humans with magic. Day and night are reversed. They don't know time. They use magic to maintain a prosperity that is isolated from the outside world. People here don't need to face the weird night. They don't need to see the blood in the outer city. They don't even need to know the time - magic will arrange everything for them.
The underlying logic of the inner and outer cities: the inner city is responsible for formulating rules and enjoying resources, while the outer city is responsible for enforcing rules and providing resources. The transactions between noble orcs and humans - essentially, the people in power in the inner city package the tails, horns, and even cubs of orcs/demon into commodities through the black market in the outer city, and then flow into the enjoyment system of the inner city.
Intention: Seize the misty hope and discover it is false despair