Indeed. It is a phenomenon that was called simply “the Blight”, and it was…

[ He trails off thoughtfully, since how to put it… It’s still something quite odd to him considering just how far outside the real of his experiences it was. Ironic for a demon, perhaps, but his world was shockingly mundane despite that. ]

Well, it caused patches of… instability, I suppose? But it was with time itself. I did not personally witness it, but I head the building crumbled as if it had suddenly become a ruin.