As Alex wakes up his head would be splitting with a headaches.
He'll meet the aurors who will inform him about him being a wizard and this incident will let his muggle parents fear the wizarding world a little but the aurors will assure them that the muggle world is fine.
They would even then provide him with a pistol for self defence from any magical beasts in future as his father was an ex- SAS officer who had retired after marrying his mother.
As Alex sleeps into his bed memories of his previous life would slowly awaken.
His posture in reality would change slowly and even his soul which was previously fragile would start to mend itself.
The memories which were sealed were now unsealing and making the boy stronger.
The magic capacity of the body would increase with the amount of memories the boy had.
At this moment Alex's soul was floating in a black space.
As it slowly wakes up, it would be greeted by another entity as Alex looks at the entity he noticed the entity was looking wood skinned and even her hair was made of tree root.
At this moment the memories of Alex's previous life as Lucifer named human would return.
The childhood, the slaughter, the hatered, the peace, the omniverse, the gods, the outer and the greater void.
All those memories would be unsealed and Alex/Lucifer would recognise the entity in front as the Personification of the world will from his previous life.
In his previous life Alex was a genius in his own right.
That world was too advanced as compared to all the other worlds and even too developed and experienced as compared to other worlds.
It was advanced enough to develop a world conciousness under the efforts of all the races of that world.
This will or personification helped the living beings to advance their life style and Knowledge faster.
The races of that world expanded rapidly at first quickly growing from a multiversal to Omniversal level civilization but soon their world was invaded by multiple evil beings from multiple worlds. That was when the Tier 0 being of that world came forward and repelled the attackers.
The entity was lost from that day.
Thoigh the war was won but the world suffered an unprecidented loss at that time and many races were nearly perished and humanity were reduced to the last 1000.
With each generation humanity's numbers dwindles and by Lucifers generation only six humans remained.
After this battle the races of this world who had been eager to travel in the omniverse finally hesitated.
So they stopped travelling to these worlds and just watched the developments of these worlds.
They would neither help nor attack the worlds just watch them.
In the porcess the knowledge of this world grew to unprecedented heights.
The mistakes made by other civillizations were avoided.
The good aspects were kept.
They advanced their technology, magic, ki etc all forms of energy to a near godly level.
They became so advanced that the gods of their worlds who had previously swore to not interfere in the affairs of mortals were found out by them.
They conversated and learnt with the gods and demons and their knowledge grew again.
Before Lucifer was born his mother who had half the genes of all of omniverse and his father who had half the genes of the omniverse had a dream which was explaining them how they had the genes of the whole world because in each generation their ancestors had marrried outside their race and at last they both had married as humans.
It would explain how their child would have so great a potential that he/she might become a cripple so in order to save him they must beforehand travel to a certain place where they could witness the phenomenon. They did so and Lucifer was born.
Lucifer/Alex was born in that world and multiversal knowledge which is too rare for people in other worlds was actually a standard middle school course.
For the kindergarden the students actually formed the connection woth the world spirit and from then the world spirit would guide them in life.
Lucifer was special even in that world as he at the tender age of Three broke the mechanics of omniverse and not just calculated every action of every human and even the end of the world, outers and even the tier 0 beings' actions were calculated by him. Though at that time he did it uncounciously by only questioning abiut the purpose of life.
He at that time sealed his memories related to that thought because he concluded he shouldnt weild such a power. This incident made Lucifer special making him a singualrity of Omniverse. Meaning there were no other temporal or spatial variatioms of him in all of omniverse.
Lucifer's mom was the holder of Alashik records an omniversal cosmic record which noted every incident in the omniverse it prophecied the future of every entity in the world.
Though only the people recognised could use it.
Even they were under a restrictiont that if they saw their future they cant change it or else worse things would happen.
Lucifer's mom knew that her child was divine and meant for greater purpose but when she saw the future where he died saving the omnjverse alone without properly understanding the love, childhood as a human she reveled against the world spirit and decided to use a forbidden magic to change the outcome.
This was an existential curse which could allow one to curse someone through existence but this curse would erase the caster from existence once they cast this.
Lucifer's mom preset this curse to take effect when Lucifer kills her as only in that moment Lucifer would break all ties an would become lonely. She wanted to leave this curse on him with the condition that ANYONE WHO LOVES LUCIFER OR CARES FOR HIM AS LONG AS TRIES TO CHASE HIM OUT OF LOVE WOULD VE ABLE TO GET CLOSE, LUCIFER WOULD NOT BE ABLE TO DIRECTLY OF INDIRECTLY PUSH THEM AWAY FROM HIMSELF. This was the last thing she left for Lucifer. The moment Lucifer killed her to save the omniverse the curse took effect erasing her from existence and replacing her soul with a new soul. Her whole existence was replaced with this new soul whatever she did and had acheived was replaced by this new soul.