possibly related to the Chaos in the region?
You know, as I was talking to this last reincarnation of Manus, I got to thinking and thought of something that could be interesting if it worked out- There's a few loopholes for it to work though... Is if Sunken City, Iron Keep, and Ivory Kingdom and Drangleic were all the same place, just in different times. First cycle would be Sunken City with its version of Manus daughter. Then next cycle its Ivory kingdom with its new reincarnation of manus, then Iron kingdom, and then after that cycle, it's Drangliec's turn. And then out of that would come another kingdom with its own manus daughter. Granted I haven't reached the end of this last dlc yet so I have no idea just how utterly impossible it'd be for that to work out that way.