So, in the previous update, the MC and Liz talk about how Amber seems to be really talented, and capable of growing insanely fast, so fast that one fight for Amber is equivalent to days or weeks of training for Liz. One of the answers that we can give to Liz is that it's possible that Amber wasn't turned by the Strength Eaters, but by the being that they are subservient to. They call it a god, but most probably it is one of the two Outer Twins, the one that is still alive and the one that could therefore pick who their Chosen would be. Like I said, in that same update, you have a chance to jump into a flame that loses you 10 Power, but gives you a memory from the Arbiter Chaos that 3 and 1 have died, which to me meant that 3 Arbiters and one of the Outer Twins died in a fight against some kind of being or beings from outside of the universe that they created. This memory mentions that the Arbiters who died became a pair of twins, aka the Apostles, which was weird because the Outer Twins were also twins, which implied to me that the Outer Twins exist because the original God, that all of the Apostles say they are an aspect of it's power, died and split into them.
So if Amber is supposed to be the Chosen of an Outer Twin, shouldn't it be possible that there is another individual that is supposed to become the Chosen of the other Outer Twin? It makes some sense because there are the Great Ocean, that the Strength Eaters are supposed to be one of the few monsters that can swim freely in it, and the giant tree whose name I still don't remember in that world, but the Dark Moon no longer seems to be there, which might be part of why the sky is almost completely dark. It also explains the behavior of the Great Ocean towards Amber, it seems to be unwilling to touch her in almost any way, and Amber says that something would have come to her if she kept traveling out into the area controlled by the Great Ocean. If they share the same origin, than touching Amber would both cause her to absorb the water she comes into contact with, and probably also corrupt Amber due to their great difference in strength, causing her to eventually fail to meet the standards her Outer Twin has, and causing her to become another part of the Great Ocean.
Then, how or why is the MC possibly the other Outer Twin's Chosen? First, think of what the tree does, it reaches into the Ocean, grabs a giant whale, and is implied to eat it based on how Ella reacts to it. Isn't that similar to what we do, take a sample of a creature, and use it to strengthen or alter our body? We always thought it was just Memory and Body, but what if it was also the foundation of the other Outer Twin's power? One absorbs and distributes some fundamental Power, the other stores Information, and can use it to make, alter, or enhance itself or create new beings. Then, there's the 1% of us that isn't Memory or Body, that came from Syla, and that apparently she couldn't purge from herself. Maybe that was just because she was not conscious of that time, and couldn't forget it, maybe it's because the energy expenditure increases as time goes on, and purging it would kill her, or maybe it's because she can't, because it's from something above her powers, like Evolution or one of the Outer Twins. Which means maybe the Eye is Evolution, as many people, myself included, believed it was, or maybe it is supposed to be what's left of the dead Outer Twin's consciousness. Even if the Eye is Evolution, that doesn't necessarily mean that it isn't surviving inside of something that made it, and that was possibly given to it in order to create a new Chosen for the dead Outer Twin.
So my thoughts boil down to this, the whole reason the Outer Twins made the universe, as they are said to have, was to create a new vessel for God. Something happened between then and now that caused one of the Outer Twins to die, and eventually caused all the Arbiters to die as well. However, they made some preparations to keep the chances of a new God being born from becoming zero, one of which became a part of us, and may be trying to make us either into a Chosen for the dead Outer Twin, or into the new Outer Twin out and out. The Apostles do or don't know about this, and are either attempting to act to stop or continue their work if they do, or are trying to enter the real world for some as of yet unknown reason if they don't.