Demon Lord's Reincarnation

The ORIGIN who was already being slowly corrupted by the desires of his creations was looking through the flow of fate. The ORIGIN was trying to see what kind of changes the humans he created would bring about. 

The ORIGIN created humans with the idea of making a race different from the Gods. When he created the Gods he wanted to create a perfect race that could accompany him through eternity, but that was a failure. The Gods he created were not anywhere near perfection. So The ORIGIN decided to create humanity, a race that had nothing, to begin with but had unlimited possibilities. 

Due to his previous mistake, with the Gods, the ORIGIN created humanity without any emotions. The humans did prosper a bit despite their lacking emotions but they didn't go that far until they were destroyed by decreasing birth rate as well as the Gods playing with them.

The ORIGIN did not bother scolding the Gods as they could do what they pleased as long as they didn't annihilate the entire human race. Still, because of a few suggestions given to The ORIGIN by the Gods The ORIGIN reset humanity and this time the ORIGIN added emotions into them. 

Now because of the emotions they felt humanity became much more colorful. They created more things that went beyond anything the Gods could conjure. The ORIGIN looked at the creativity of humanity and even the ORIGIN was impressed. 

The ORIGIN thought that this time humanity would reach the end he hoped for, so he looked through the flow of fate but what he saw was a disappointment. Ultimately, the humans who would eventually colonize most of the universe they were in would eventually die out because of fighting against each other. 

Still, humans aren't static creatures, and the flow of fate changes erratically because of their different choices. So the ORIGiN glimpsed into every possible future of humanity trying to find the one he wanted to see. Unfortunately, despite looking through literal infinity the ORIGIN was unable to see the future he wanted to see.

The ORIGIN felt utterly disappointed, still, he had hope that something beyond his understanding would happen so he went back to waiting. While he was waiting he could feel the corruption already invading his core, but he did nothing simply because he wanted something to happen. The lonely ORIGIN had always wanted something beyond his reach beyond his understanding to happen, yet unfortunately as an Omnipotent, Omniscient, Omnipresent being that was nigh impossible to ever happen. 

Still, the ORIGIN continued to wait for that impossibility to happen since it was the only thing that made eternity a little less boring. In the eyes of the ORIGIN everything that happened, that's happening, and will happen has already been seen by him. The creativity of humans had brought something new into his eyes, but that did not last long as he could see through everything. 

Even if he limits his Omniscience to a certain degree, he can still foresee almost everything which can only quench his boredom and loneliness for a small amount of time.

...

Every passing moment for the ORIGIN was like torture, until one day as he was looking at the flow of fate, he noticed that some parts disappeared, parts of the past, present, and future had disappeared from his sight. This has never happened before this was actually making the ORIGIN feel something. 

The ORIGIN tried to scan the time when this happened and could not find out what, why, where, and when it happened. This was incredible, as an Omnipotent, Omniscient, and Omnipresent being this should have never happened to the ORIGIN. Trying to find out something and failing to do so was of course a first in the entirety of the ORIGIN's existence. 

Since the ORIGIN could not trace how this happened, he looked at the things that disappeared from his sight. After a short pause, the ORIGIN now understood that everyone who had contact with a certain human had disappeared from his sight. They were still in the flow of fate, but there were parts when they disappeared. On the other hand, there was one human that had completely disappeared from the flow of fate, not only that but this human had severed his link from The ORIGIN his creator. 

This made the ORIGIN feel like he had found an incredible treasure, the thing that the ORIGIN thought would never happen actually happened. Something beyond his cognition was born from his own creations. 

The ORIGIN created an avatar to head to the place where Erste the human who disappeared from his sight was. The ORIGIN wanted to see what was happening that made Erste break out from not only the bonds of fate but even the bonds of his creator. 

...

The ORIGIN's avatar arrived at the dimension Erste was in and saw that he and another were in a fierce battle against an Old God. The ORIGIN could already tell that Erste and his companion were no match for the Old God. Seeing this the ORIGIN started thinking if he should intervene since he did not want Erste the treasure he found to just die. 

Even though the ORIGIN could resurrect Erste after death, would that still be the same Erste that had the ability to go beyond the ORIGIN's cognition? Still, the ORIGIN also wanted to see if Erste who had done an impossible thing by breaking free from fate do another impossible thing by defeating the Old God who outclasses him in nearly every aspect. 

As the ORIGIN was deciding what to do things turned for the worst for Erste and Gratz as the Old God had severely injured both. Gratz had fallen and was barely conscious while Erste was bleeding all over his mana nearly depleted. The ORIGIN who was about to intervene then saw the vicious-looking smile on Erste's face it grew wider. 

"HAHAHA! This is incredible! Come on then let's have more fun!" 

It was then something incredible happened that surprised not only the Old God and Gratz but even the ORIGIN was surprised at the sight. Erste pulled out a portion of his own soul, gathered the energy of chaos that was in the void and it turned into the shape of a sword.

It was a power, different than mana, the ability to control one's soul and control the energy of chaos was a power only the ORIGIN itself had. Even the Ancient Gods could not sense the void much less take and control chaotic energy from the void, but Erste did it with his own power.