Have you heard of world projection ? Whenever a world is strong enough their existence will radiate across all existense causing worlds that are similar to them to be born. However that is not what happened to this world.
A long time ago when this world was just about to born, a head fell on it. This head belong to Atropos, one of the goddess of fate. This Atropos was from a world that was created by the projection of the origin of greek mythology. Unfortunately her world was invaded by the abyss, a powerfull world that seek chaos causing her world to be drstroyed and her head to swim in chaos until it fell onto a world that was about to be born.
The head that fell onto that world affected the newly born world. It causes the world to crave the laws on the head. And so not knowing of the consequence, the world deour the head.
From this, the newly born world gain the law of fate and negativity from the head and the abyss wound on it. Not only that, when it devoured the head, it knew about the world where the head was from.
instinctively, the world started to immitate the world from the memories of the head. It tried to create the six primordial gods of that world. Using the law of land and the land of the world, the personality of Gaia was born. Using the law of darkness and the cover that protects the world, the personality Erebus was born. Using the law of negativity and the bottom of the world, the personality Tartarus was born. From the law of fate, the personality of Moira was born. From the law of mystery, the personality nyx was born.
However when it tried to create the primordial god eros, it failed due to the insuficient laws that it had. It tried and tried hundreds and millions of times but still failed. So it tried to gather the 'spirituality' of the world that gives wisdom and soul to it's inhabitance to create the god of spirituality eros.
It worked and failed at the same time.
When Eros was about to be born, the personality broke and scattered across the world, only a promordial seat that has no laws was born.
The spirituality that failed to gather eros flew across the world and from it wisdom was born in the personality of the primordials. The bits of soul of atropos that still haven't been devored by the world even fuse into the moira personality trying to revive itself which cause the world to instinctively to attack it due to it's foreign aura. The attack was so great that moira who was just born got serously injured causing her to go to tartatus which inturn causes the world to attack Tartatus. This attack killed and destroyed the divine soul of the 'Atropos' and the newlyborn divine soul of tartatus that was still ignorant.
Perhaps to spite world, before her death, 'Atropos' sends her knowledge of the outside world to newly born divine soul of nyx and gaia. Since then, although moira and tartatus is said to be a primordial god, they are mearly an extention of the world that has no wisdom or soul. And so this world was officialy born and became a greek myth world projection.
Due to the spirituality that traveled across the world three new gods that were not primordials was born. They were Uranus the god of the sky, Pontus the god of the sea, and Uria the god of mountains. These three were also the first great god in the world since unlike the other gods later, they are the incarnation of their respective laws.
These primordials and great gods live peacefully and did their job properly. Gaia continue trying to create inhabitence for the world. Urebus protecting the world from the chaos energy outside. Nyx just sleeping. Pontus enriching the sea. Uria making mountains. Uranus parroling the world.
Until one day, Uranus discovered the sixth peimodial seat that was born through Eros failure. He also discovered that he has the qualification to take that seat and become a primordial god. By making a great contribution that benefits the world, he can attract the will of the world and become the new primordial. Just one problem, uria and pontos also have the qualification of becoming the sixth primordial.
If they make contribution first, uranus won't be able to become the sixth primordial. So he staryed planning since he didn't know what contribution he could make, he will kill his competitors first so that he will have more confidence in obtaining the primordial seat. After all by becoming the new primordial he can elivate the concept of the sky which in turn makes him stronger.
So he started planning. See he discovered that when uria create mountains it will make gaia control over the land where the mountains are to weaken.
So, He decided to seek gaia help to kill uria. He bewitch her with the deal of making her laws of the land stronger by devouring Uria's body since the great god have their priesthood fuse with their bodies. And so he did his plan and it worked. Gaia helped him kill uria. They even got closer due to this. Uranus put uria's divine personality and divine soul in a gem that he gave to gaia as a token of his friendship.
After Uranus gave uria's body to gaia, She devoured it essence making the laws of the mountain become one with the lands. She then put the corpse of uria that was not devoured on the last mountain he made. This corpse would later fuse with that mountain becoming mount olympus.