The first city Nick went to was called Meat Cube City, which was named after its most powerful Specter, the Meat Cube.
The Meat Cube grew more powerful by absorbing meat, no matter where it came from.
Naturally, there were different ways of working with that Specter and different ways one could get the meat.
For example, the Meat Cube could be handled the same way as the Corpse Mountain in Crimson City. If the city just threw all of the dead people into it, things wouldn't be horrible.
However, this was a city controlled by Lust.
It did not require a lot of creativity to find how Lust and meat production were connected.
While, on the surface, Meat Cube City acted like a normal city, its darkness reached deep.
Aegis could deal with starving and dehydrating people. As long as the cities delivered their tribute, Aegis wouldn't get involved.