The Multiverse is a strange place. It's both infinite, yet, it isn't, for a very strange reason. You see, unlike what many have theorized, the Multiverse isn't made up of every possibility, but every idea. Every concept, every invention, every story, every thought contributes to its formation. Once a unique thought gets out there, it condenses into a new World, based on the thought that gave it birth, attracting every similar thought, growing sturdier and sturdier as it does. That isn't to say that your favorite book character is out there running around, doing whatever it is that was written about them. It doesn't work that way. But the world they lived in? If it was described enough, developed enough, different enough, thought about enough, then yes, it's out there. Now see, while there are a lot of thoughts, too many if you ask me, they aren't infinite. A number too large to count, one still growing as new thoughts are born, but not infinite. However, there have been enough thoughts that are about infinite multiverses, that individual Worlds in the non-infinite Multiverse are infinite multiverses. Funny how that works, huh?

Now you may ask, why is all this important? Why does it matter if the Multiverse is infinite or not? Well, because the Multiverse is threatened. An infinite Multiverse could not be threatened. No matter how many Worlds you destroyed, there would always be more, a constant sameness that could never be breached. Only when the Multiverse is limited, no matter how insignificant that limitation is, can it be destroyed. And the Multiverse can be destroyed. It will be.

I probably need to backtrack a bit here. You see, in the beginning, the Creator planted a seed. A single World for the rest to grow from. In a blink, as the first thought was formed, so were the first Worlds. Worlds of Light and Dark, of Plants and Animals, of Freedom and Control. Much easier to form Worlds back then, you know? Every thought was unique. Now, the less sturdy a World, the faster the time inside flows. So as you can imagine, all these Worlds based on little to no thought developed pretty quickly, developing their own people, who then had more thoughts, creating more and more Worlds, until almost instantly, the Multiverse was pretty damn big. It was a nice place too. Nice people. Not perfect people, of course, but no one was judging anyone for their imperfections, so it was nice.

Then came the Immortals. Beings who had merged with the Core of a World, becoming the embodiment of that thought. Powerful in their own World, and unique in any other. Their existence is linked with their World, so they never die. Hence the name. They're the only ones who can really explore the Multiverse, see everything it has to offer, while spreading their thought as far as it will go. The problem came when a certain Immortal, Freedom, began to see a problem. See, they represented choice, free will, doing what you wanted, but the people of the Multiverse didn't really think about it much. Oh, they had freedom, and they enjoyed it, but they didn't really care about it. That whole knowledge of good and evil thing. Can't really judge freedom if you can't judge good and evil. Freedom, being the cantankerous blight they are, couldn't stand this. They needed to be special. So, they headed to that first World, just a few days old, and tricked the toddlers into doing the one thing the Creator told them not to do. What. An. Accomplishment.

So now, the entire Multiverse is infected with this knowledge, Worlds becoming Good aligned or Evil aligned, and most of them some shade in between, everything becoming so damned complicated. Immortals fighting each other, clawing for power, and Freedom sitting on their nice little throne, happy as a clam. Oh, right the clawing for power thing. See, when an Immortal enters a different World, one that doesn't already have an Immortal, they can merge with that World's Core and gain power from it as well. Now, this isn't automatic, as they still need to go fight for the Core, and they can't take their power into another World. They do still have access to the unique abilities of their World however, which helps, but not as much as one might think. Worlds instinctively reject things that aren't themselves. However, in practice, this just makes the fighting that much more vicious.

Now, as you may imagine, the result of all this is a rather messy, nasty Multiverse. Everyone knows there's a problem, some enjoy it, some try to fight it, and most of us just have no idea what to do about it, focusing on dealing with our own little corners. This was pretty much the way things were for eons, but then- well, then they arrived. You see, every World forms based on a thought, but every World needs something to form from. The four building blocks that form every World.

World: The framework of reality. The rules which govern interaction. The dimensions within which existence takes place.

Soul: Mind. The source of thought, of consciousness. The means by which reality is observed.

Body: Form. The means by which one interacts with the World. The substance from which reality is formed.

Spirit: Life. The connection between Soul and Body. The anchor to the World.

Using the crude metaphor of a computer, the World would be the software, the Soul would be the user, the Body would be the hardware, and the Spirit would be the electricity. I think… eh, close enough. The point is, you need all of them to make a World. Yet, despite their importance, these building blocks never received their own Worlds. Most Immortals were thankful for this. No one wanted new players with that much power coming onto the field. Still, those thoughts had to go somewhere. Some theorized they went to that first World, seeing it as the perfect balance of all four.

However, they were wrong. Those thoughts went right where they were supposed to. However, they couldn't form a World of their own. There are questions as to why and my theory is that if a World is to form, then its opposite must be formed as well. A World of scissors begs the question of a World without scissors. But for the four building blocks, that is impossible. There is no World without Soul, without Body, without Spirit. There's definitely no World without World. But that's just my idea. Either way, no Worlds were formed, so instead, the Four did something worse. They gained consciousness. Well, maybe. Could be that they simply attached themselves to four random kids, but either way, the result is the same. There are people running around with powers over the very things which allow all of this to exist. People who can form opinions, who can judge, who can rightly decide that they don't like what the Multiverse has become. And then they can do something about it.