With everyone in, Kali shifted the other matters she wanted to discuss in this meeting. The entire reason she wanted to get those demon lords on board was to expand Arad's dominion in the abyss and make it easier for him to open trade routes with the demons.
There are countless rare minerals, plants, and powerful monsters to hunt in the abyss for exotic materials. As even the bugs in the abyss are around C-rank, it is a place that humanoids can't survive in. So, to get those materials, the humanoids would have to rely on the demons to do the hunting, and the demons would, in exchange, also be able to trade back with the mortals.
Another goal of this meeting was to find a suitable layer to allow humanoids to build a city that would be their embassy, and that was a harder task than anyone could even fathom.
