The original demon becomes the mc(Tensura fan fic)

Before the dawn of time, space and the entire multiverse, there existed a will. A singular being who could do anything, see anything , it was basically a god. The will grew bored and decided to create other beings and wills so they could make him get rid of his boredom ,but he realized that he would know everything that will happen with the will's futures due to his omnipotence . So it gave up his omnipotence and was reborn in the form of the first life in the void of nothingness. He named his species by the name True Dragon . When he was born he also created numerous universe and two world outside of the World where he was planning on creating lifeforms. Then he used the holy spirits without egos which were just born after he was reborn as a True dragon . He split the most brightest spirit "The Holy Spirit of Light" to create 7 primordial angels with egos to assist him in his creation . Similarly due to the spirit of light splitting ,it's polar opposite "The Holy Spirit of Darkness" also split apart to form the 7 primordial demons. The primordial demons were resided in the world of darkness which was also known as the Underworld, while the primordial angels were resided in the heavens. The angels aided Veldanava in the creation of other lifeforms throughout the multiverse. Meanwhile in the underworld, the primordial demons refered to by their color had created their descendants using their powers start to occupy the territory of the underworld and start fighting for the throne of underworld. Among the primordials, two primordials were the superior ones, it was the Rouge and noir. Both classed for eons until noir gave up the meaningless fight and Rouge became the ruler of the underworld. The primordial were kinda like siblings to each other in a sense with Rogue being the oldest . Meanwhile other True dragons were born out of the divine energy that existed before the universe. Among which velzard the ice dragon was given a duty by veldanava to manage the world . Velzard who had no goal apart from living up to her brother's expectations obeyed and did so. Due to it Rogue nor any of the primordial demons were never summoned by the high humans. 

One day a figure similar to the true dragons with unknown origins appeared and started creating havoc. Velzard confronted it and was easily overwhelmed, fighting the being who they gave them the name of ivarage.Velzard manage to drag ivarage to the underworld. where rogue demon aided her fight ivarage and they manage to barely stop his movements . Rogue used his most of his lifeforce to create a spell allowing him to restrain ivarage allowing velzard to use her powers to freeze ivarage. But Rogue died to his soul and his lifeforce being low from the battle. While velzard was killed by ivarage in her final attack. True dragons and the spiritual beings like the primordial demons never die truly due to them being reincarnated later . But velzard and primordial rogue were too weakened that it would took truly eons before they could get reincarnated . The descendants of the 7 demons were summoned and procreated with humans creating humans with demon bloodline.