Dante's hunting expeditions were a regular occurrence at the [Mines of Malevolence].
Every now and then, Dante would disappear with several dozen or so of his kaijin in tow, and then come back with some new ones replacing several of the ones he had brought along with him.
It should be noted that none of these replaced kaijin represented a net loss in power for the mines, more like a reallocation of resources.
Now, one would think that since that there were less kaijin in the mines and that the overseer wasn't around to coordinate this mess, that the slaves of mine would have an easier time, right?
Wrong.
The Kaijin left behind in the mines had less oversight, less competition and even more opportunities to fuck with the slaves themselves.
In other words, now that they didn't have to worry about their fellow monsters attempting to eat them they were free to be more creative with their abuses than before.