Thusia used to be a vast civilization, yeah. With a people and culture that used to encompass the whole world. And although nature was always violent, the humans here were able to keep nature at bay.

Until one day, suddenly, the waters rose up and washed them all away. There was no warning. And from what I take it, not a lot of survivors. For if even a small group of people had survived, Dellen is sure that she would be able to sense them.

But to her knowledge, there aren't any survivors of original Thusia.