Well! Allow me to explain what they haven't bothered to. [Nagito spreads his hands out with a faint smile of his face. He's hardly surprised that it has to be explained. People at town hall seemed reluctant to even break things down. They should have been combing over every detail not shouting back and forth like foolish and arrogant politicians.

Idiots.]

Originally, all but Thras and Daimonia were corrupted. Even Elios. Each time an emotional swing happens, one of the Arehtei comes here. Elios was cleansed by love but not before causing a lot of destruction.

Peromei we lured away from the city and she brought forth a maze. Sosyne raged and caused others to rage...

I only heard it got worse as the battle between her and Elios raged on. Elios shielded her. But that's not the important part.

Now imagine... [He picks up his spoon and holds it just on the top of his coffee.]

This is how it was. And as they grew unhappy with their society, including the Arehtei... [He slowly lowers the spoon into the liquid.]

Peromei said 'darkness took the hearts of man'. Connected as deeply as they are to humans, what do you think happened to them in the process?