"After the great war, when the Celestial King defeated the great Demon Lord LeroEpeothus, all the demons went into hiding. After thousands of years, the Celestial King died due to an illness of heart disease he had. Of course, he could've healed it, but he couldn't.
As for how he got the disease, one of the gods of destruction stabbed him in the heart while fighting Demon Lord Lero thousands of years ago and told him he had a few years to live.
But before dying, the Celestial King said, 'There should be somebody worthy to take my place and inherit my name.' But all the Demigods were in a state of panic:
'You are special, there is none like you, you are a boundless being, and you far surpass what we mortals call omnipotent, omniscient, omnipresent. You are no god; you are beyond that.
"...your power transcends all logic of this world, even the gods cannot comprehend what you're capable of." There is no one that can replace you.
While the Demigods were crying, the Celestial King said, "One day you will find someone that will be more special and stronger than me, even if it takes billions and billions of years."
The Celestial King: "There should be a tournament to determine the strongest persons in each 12 crystals, and the strongest out of the 12 that will be worthy to inherit my name."
Demigods: "But where should we use to hold the tournament, because there's no place strong enough to hold the warriors, even if we use a barrier it won't hold them for long."
The Celestial King: "Use the Mirror Room."
Demigods: "What? The Celestial King: The Realms I was born in, I created a replica of it. Go to the Higher Outerverse, I've created a portal that will teleport you and the examinees inside the three realms and into the Mirror Room."
The Celestial King's last words were: "I give you seven years to find and train the strongest warriors in each crystal, and then pick one to become the Celestial King."
And then the Celestial King died.
After doing what the Celestial King asked, the Demigods chose Victony Olivia as the second Celestial King.
Victony Olivia, the second Celestial King, then created a cyberbox. "It is said that anyone who completely fuses with it will have unimaginable power that not even the gods can comprehend."
After doing that, she then proceeds to create an elixir of life, which she poured into all 12 crystals, making them immortal.
Mira: "I still can't believe how she made countless multiverses in each 12 crystal immortal. That's crazy."
Mira patted her face: "Back to the story. Several years after being the Celestial King, rumors started spreading out that she was working with the god of destruction that stabbed the first Celestial King, because she was the only human that has the power of a god, the power of creation, and that she created the weapon used by the god of destruction.
Everyone started hating her, cursing her. Later on, she was relieved from her position as the second Celestial King.
So she was angry, and she removed the elixir of life she poured on all 12 crystals and poured it in our universe, not the multiverse, because this was her hometown, and everyone here believed in her, and she wouldn't do such a thing.
On seeing that she removed the elixir of life on the 12 crystals and poured it in her universe, she was executed at the Mirror Room and broadcasted for all the people in the 12 crystals to see, and then our universe was given the name 'The Forsaken Ones.'
But before she was executed, she said, 'I created a cyberbox. Anyone who finds it and completely fuses with it will become a boundless, omniscient, omnipotent, and omnipresent god. Just think of it as the ability to do whatever you want.'
With those as her final words, mercenaries, adventurers, and even some hunters all over the 12 crystals became vicious, conquering and destroying universes with the intent to find the cyberbox.
Mira: "Oh! You're asleep, Rey."
Rey sleep-talked, "Mom... one day... I will become the Celestial King."
Mira looked at Rey in shock: "How was he able to talk without stammering?" Mira couldn't shake off the feeling that something was special about her child. She gently covered Rey with a blanket and quietly left the room.