But on the outskirts of the City of Sin, vast slums were the norm.
After all, wicked people also reproduce, and perhaps your ancestors were great villains, but the children of great villains might not be so evil. However, in the City of Sin, if you weren't ruthless, you couldn't stand your ground. Therefore, these descendants of evil people were pushed to the edges by the new wicked ones, as their hearts weren't ruthless enough to fit in this city.
Similarly, the label of being descendants of evil people ensured that they had nowhere to go in the outside world, so they could only struggle near the City of Sin.
Yes, really struggle. Many who were not evil enough, not great villains, and lacked the means to live in the Central City District, relied on oppressing these people for their sustenance.
In these civilian districts, gangs dominated, cults proliferated, and most of the world's misfortune and ugliness could be seen here.