*Below*

This is the Orz's home dimension. It might be thought that this is the same as PrettySpace, where the Taalo fled to, but the Orz mention that they "must *spread* to *PrettySpace* to *chase* them," therefore proving that they are separate dimensions. It is theorized to be another dimension adjacent to TrueSpace, like QuasiSpace to HyperSpace, but on the "other side" of it. It may be helpful to think of the dimensions like a stack of paper. On the top, as far as we know, is QuasiSpace, then HyperSpace, followed by TrueSpace and then PrettySpace and *below*, in some arrangement.