This particular writeup will pull from one of my own personal theories, as well as reach into a curious one I had stumbled upon elsewhere. There are interesting aspects to it, so I felt it was most definitely something worth sharing.
An argument regarding the identity of the Fifth Anguis of Ouroboros.
This delicious crack theory suggests that everything we think we know about Zemuria may be false. What if everything since the Great Collapse has been the mere execution of a plan that was drafted prior to the Collapse, which served as a catalyst?