Before creation their were two deities Olena the giver of life and Nexaris the Ravager, Olena and Nexaris were lovers who dreamed of creating a world together but like most gods given the the job of destruction,death and the power of the void, this power would slowly control him.
This was mainly because Nexaris wasn't always a god ,in fact he was the recarnation of a mortal from Earth this of course led to his meeting with Olena who was a natural born god but there was a problem with her power you see, she could only create not destroy which was much of a problem, it was more of a hindrance for she would have to create destruction and death if she wanted the universe to be stable and healthy. But when she met Nexaris she grew to reliant on him ,his power and their plan.
But she'd learn that her trust was about to become her partner's downfall.
Nexaris lost control of his power , attacking Olena in her cosmic Palace. This lead to a great battle that would shake the entirety of existence.
Olena would summon an army of angels, her main where the primordials a group of angels so powerful they could destroy entire planets but Nexaris wouldn't stay far behind he would use his void abilities to create an army of demons and primordial demons these armies would clash for an entire millennium.
Olena would use her final resort the celestial merge. This power would merge both God's into one being and so she used it crying as she did.
She would become a massive omnipotent being. Existence would rumble at her presence declaring her the creator.
As her first decree she would create heaven and hell for both new races as well as making the two most strongest of the two races Celestia and Diablo the God and goddess of heaven and hell.
She'd also create the Omniverse and the planet of Rylonia which is where our story begins in a small village called viscous with a young teenager by the name of Noah Rowland