Caelum

Caelum is a dimension that was founded and created back in the era where Sons of Genesis were prominent, created to serve as a Last Bastion for the survivors of the Calamity that caused all Sons of Genesis to be erased in an instant. In due time that he had forseen in a dream. Tael's began fearing his own demise, that he would pass away without having amounted with himself all knowledge known to man, so he decided to do something bold and rash, not thinking about the consequences of his actions - He cursed his own soul ever to wander in two bodies, one of Obfuscating Shade, and another of Gleaming Brilliance and left one of his homunculi in charge of keeping the survivors of the calamity safe in the Last Bastion.

The reincarnation loop however, would extend itself for such a large period, Tael no longer could recall his origins, going through what is called The Blending in the process. It, however, granted him no joy seeing some of his reincarnations realize the truth of their existence and attempting to take it onto themselves to fix it, only to have their hopes destroyed, so he decided to do what he could to help them, all of them, find Respite, and enlisted his latest reincarnation of Truest Brilliance to be the hero of them all, and through this dimension where he would reconviene and prepare for another journey, he completed the task.

The Overbearing Tree - Erdtree
The Erdtree, Great World Tree of Caelum, is the source from which the entire dimension sprouts and very possibly the source of the Singularities obtained by the Metropolis for their own uses (It is unclear if the Singularities are some of the lost principles of the Golden Law, which will be talked about much later). Since it's creation, it has been infused with Infinity Ether and Magical Potency by the very God of Magic and the Eulogy together, and due to this, it is capable to this day to instantly stablish a direct connection, without access to the Lanes, to another brand new dimension. This was at first used to lead as much Sons of Genesis into Caelum as possible, but due to that purpose being lost, it is now used as a hub of interdimensional travel without use of the Lanes in Between, and a possibility to avoid the Administrator if one knows exactly how to open the portal to the place they want.

As of recent events, there seems to be a counciousness speaking from within the tree, with unknown origins. Tael seems to be able to hear it loud and clear, aswell as Okada Izou for reasons yet unknown.

Under the Shade of the Erdtree, hide the people of Gold
The Erdfolk, race created entirely from Tael's magical creation-like powers and overbearing divine magical potential as a God-like entity, are a rather strange folk, beinga ble to speak in a language that is a changed dialect of the language of Genesis which they've come to call Erdian, as a homage to their great tree. Their appearence is peculiar, with parts of their bodies and accessories fully bathed in gold, but appearing human-like in every other aspect. Their magical attunement is quite high as far as anyone can tell, but it is unknown if they are versed in the arts of the arcane, or even how their culture is like. It is however, known that the Erdfolk do not worship Tael, at his request they worship the True Entity of Creation, Genesis, as Complete Tael did not feel worthy to such as role after how much suffering he had caused to those who did not choose to live their lives his way.

The Flying Districts Across the Infinityscape
The Outlands Districts, as they have been called by many, are an essential part of Caelum, being where most of the action happens in the land. These are the lands outside of the main Citadel where the Erdtree is located, being almost infinite in number, simply floating above a gaping void that leads to A Moment, Fractured, a land that stands under the outlands districts, covered in ash, with little to no denizens, serving as a home for those who prefer Shade over Brilliance. One of the most outstanding Districts is the forcefully unified selection of 26 Districts through "Fairy", a Singularity used in the wrong hands by the wrong people, The Wings of the World - Creating the Metropolis.

The Metropolis however, is currently destroyed, as KINGDOM tries to take over it's remains to make away with their singularities to be able to strengthen their power and take over the whole of Caelum, but their efforts have so far been stopped by Okada in all fronts without effort.

A Moment, Fractured - Land of Lamentations
A Moment, Fractured is the very pit at the edge of every Outlands District. Not much is known about it, only that it is probably almost infinite in sheer scale, or perhaps ever expanding. It is a desolate wasteland of ash, representative of Tael's grief, sorrow and guilt for his past transgressions, which only ammounts itself more and more as he longs for a proper end to his story, and end that will be able to finally rectify the last thing he did wrong - To give a life to those two who did so much for him when he was bodiless. The only known denizens of this locationa are Yhwach, who resided here ever since it was created due to hating the sun and being ever since birth alone, being this the only place where he felt like he had company, and Leeren, who settled on this place due to it simply being enough of a wasteland for him not to destroy something if he ever got enraged and endangered someone due to it.

KINGDOM
KINGDOM is a faction ruled over by Bondrewd, a man of business who intends to repurpose the Ether used to keep the islands afloat to make a prospering business out of it, resulting in the instability and possible demise of several thousand Outlands Districts who have a risk of falling due to their greed. They are however, a force large in numbers and technology, being feared in almost all of Caelum.

Boundless
Boundless is a faction ruled over by Jhin and his councelors, a simple dude who decided to not stand up to the garbage brough forth by KINGDOM, essentially acting as a power counterforce to his methods. Bondrewd and Jhin are essentially opposites in some to many regards - What Bondrewd does for greed, to expect riches and fame, Jhin does because he cares for the people of Caelum and does not want anybody to get hurt, going as far as not fighting any large battles with any troops of any kind, going alone or with automata created by KillJoy and Omega. Boundless are revered as Heroes of Caelum, providing goods in several ways to the masses are deflecting oncoming assaults from KINGDOM.

The Wings of the City
The nefarious group of 26 heads of state, controlling the Metropolis of Caelum with their Singularities. They are mostly kept to themselves, but it is clear they intended to erase KINGDOM and Boundless both through the use of what they called "Perfect Machina" which turned against them, causing the collapse of the City and their very faction not much long after. It is worth noting however, that not all Wings agreed to this sort of thing, but since the majority won the counceling votes, they took action as those pleased.

The Golden Law - The Logic of the World
The Golden Law is an unknown powerful force that acts as an authority to the logic of the world, so powerful that it commands the stars, with the source of it being the Erdtree's power. It is also known that both Joshua and TAEL have complete control over The Golden Law, one due to inheriting the core the Overbearing, Infinite Radiant Divinity at the Core of Erdtree, and another. It is also known that there is some sort of golden rain occuring when TAEL was rebirth, which is later called The Golden Grace which filtered down from the branches of the World Tree, falling upon Caelum and it seems to bless some, and spurn others for unknown reasons.