So we've confirmed that Joshua is working under Ion to a degree that they have very casual phone calls and Joshua could even ask him to pick up a magazine for him. On top of that Joshua can now presumably control his power by extending his horns as seen in the bloody panel, but the "noise" hasn't left him. Speaking of that bloody panel, the dark contrast on the blood and the overly white panel looked great.
It's also notable that Balzo is a pursuer like Relaie was. It seems likely that Relaie, alike Balzo, probably got in a fight with Chrno as he was working with Ion for a rebellion. The pursuers seem to be demons trying to keep demon order, as formerly Chrno, and now Ion and Joshua are trying to change it.