fascistcrusader
Restricted
Pyron, you're still on my ignore but I don't want you lying to these good people, so I have to correct you. For starters, the Xenosaga universe isn't our universe anymore than the Star Trek universe is. They use names from our universe, but that doesn't make it ours, unless you actually believe in the future both Star Trek and Xenosaga will become reality. Please stop trying to desperately save face with mistruths. Here are the facts, the perfect guide says that the lower domain is simply a part of one universe, here it is for your enjoyment folks:
<<The Upper Domain and the Lower Domain>>
    The given names "Upper" and "Lower" for the domains are nothing more than relative names. It is like how the third dimension is to the second, or how the fourth dimension is to the third. Each possess an individual time axis and space axis, but as a whole, they are elements that form one universe. In addition, it is unknown even whether or not the lower domain's concept of time exists in the upper domain in the first place. But regardless, although the existing role and function differ in each due to their difference in structure, the lower domain is indispensable for the upper, and the upper domain is necessary for the lower. This is because they form a single universe with both parts included. Therefore, the dysfunction and collapse of one will exert an effect on the other as well.
<<The Power of Anima>>
    The power of Anima is what carries the function of the Failsafe.
    Due to the rejecting consciousnesses in the imaginary domain, the Collective Unconscious disperses, and the lower domain collapses, which then spreads to the upper domain. The power of Anima is the power that "safely" eliminates only the lower domain -- the Dimensional Universe -- in order to avoid the worst-case situation where the entire universe would end up being allowed to collapse. In a manner of speaking, it is the function that completely deletes the Dimensional Universe.
There it is, straight from the mouths of those who made the games. One universe with a few domains, not multiple universes.🙂