What would the world be like if magic existed and mythological beings roamed the world as humans do on earth?
The world came into existence due to the Primordial Powers with or without their accord. The Primordial are ineffable and formless beings. Their powers radiate, causing the first beings called Titans into existence. Following them were the Deities, which would later split into three groups. Aside from those beings, mortal races and animals came to being as well.
The Titans ruled all planes of existence, as most of the Primorials vanished into obscurity. The Deities grew unsatisfied under the rule of the Titan but knew that they alone were not enough to fight the Titans, as they bide their time waiting for an opportunity to strike. The mortal races flourished and grew in numbers.
Due to the existence of magic, it has become the primary tool for survival. Arts came to fruition as a method of absorption, a way for mortals to utilize the magic around them. The first mortals ascended, granting them a prolonged lifespan and powers that could almost rival the Deities.
Seeing this, the Deities saw an opportunity. The Deities sought to use Arts as a way of increasing their powers. And would recruit the help of the mortals in their fight against the Titans.
With the help of the Eternals, they were able to overthrow the Titan rule. But due to the war, the world had fractured into three planes of existence. The Celestial plane is the primary plane of existence, where the Deities who would later be called Celestials reside. The Abyssal plane served as sort of a prison for the Titans. And the Mortal plane where all mortal beings live.
Damages done to the world due to the war was evident. Space in this world was damaged. In an act to repair itself, the world fractured into pieces and was constantly expanding.
And with this expansion, new mortal races came to being. The Deities worried as they would suffer the same fate as the Titans as more mortals ascended. Devils and Demons would also rise into power, rivaling the Deities in terms of strength and influence. Another war broke loose between the two parties, but this time it ended with a stalemate.
Rather than pointless bloodshed, both sides realized that the mortals could shift the balance of power on both sides.
The Deities that would later be called Celestials alongside Devils and Demons would later adapt using indirect warfare using the Mortals as their pieces to gain the upper hand on another.
Due to the war, the fabric of space between dimensions grew weaker. Some of them began dabbling with space, granting them temporary access to those dimensions.
The inability to gain a foothold into other dimensions would lead to their ejection caused by the natural order.
They are still able to use it to their advantage by bringing unique individuals onto their realms.
Outside the world beyond the known planes, Old Entities reawaken.