The Gene Gamer

Sealing the whole cave shut, he entered seclusion.

Before, he had left his trace of aura along with an alchemy formation here, meaning that he was here so that others wouldn't enter this mountain and disrupt his seclusion, and even if they entered he would immediately know.

The cave had small holes in some places so it could ventilate the air properly.

...

Black smoke came out from the eyes and mouths of the three skulls hovering above his head.

The smoke seemed to be full of death and sickness, just a single touch of this aura and a normal human would be eroded by it, experiencing immense pain before dying.

For some special cases, the person would enter a symbiotic relationship with the black smoke before degrading into an undead.

This was the essence of the three undeads, and their whole lifetime of cultivation was stored in this black smoke.

As the black smoke come out, it would enter his seven orifices and disappear.

The black smoke that went into the eye would directly enter his soul and nourish it making it more suitable for comprehending the death rule, while also giving inspirations resulting in his soul becoming darker, only the place where his dimension rune stayed would be unaffected.

While those that went into his mouth, nose and ears would enter and spread around his whole body, and destroy everything in its way, making serious damages to his physical body.

But he still continued, his current cells were too weak, he needed to destroy them before regenerating more stronger and more adaptable cells.

While only third-tiers dared to do this, he was different. With his talent and perception, when he senses something was wrong he could evolve into a ghost anytime. As long as the damage's not too severe he could bear it.

After all, destroying and regenerating new cells would be much easier than evolving the original cells and the chances of things going wrong were little, only 0.01%.

The costs of regenerating new cells would also be much cheaper than trying to evolve the original cells.

The new cell's capability and adaptability would also be much better than the old cells, and this way, he would be able to use the runes more efficiently.

For example, if his physique from before could only teleport his finger, then after the new cells are created, transporting a palm and such would be possible.

As the black smoke entered his body, his cells were slowly destroyed.

Destroying his cells would be hard, as they had already been modified by the yin energy to make it suitable for them.

The yin energy attributed to the darkness, was closely related to undeads and demons, as their quality was similar.

So his cells had already adapted to this kind of power making it hard for the black smoke to destroy them.

But it was the lifetime accumulation of three peak first-tier undeads, the power accumulated would be enough to destroy his whole body.

....

After three days, his whole body was destroyed, leaving only his eye.

The one eye suspended in the air, stared right at the person's soul, as if seemingly able to see all of your secrets.

In this state, his consciousness was blurred as he felt very dizzy.

But as soon as he became dizzy his dimension rune worked, instantly making him sober.

His mind refreshed, he could feel the spiritual energy within the whole mountain.

The usually colorless particles now had a gray color, meaning just how polluted this environment was.

If the normal genetician absorbed this energy to nurture their genes, the genes would be polluted as well, making it very unstable.

The core, root of the gene would be polluted as the intrinsic quality of the gene would change.

The original ability would disappear as the gene would be disabled if it absorbed this kind of energy for long.

But if a gene suitable for these kinds of energy, like the ghost gene of Cylius would instead benefit when cultivating in this kind of environment.

Creating his new body would take a long time but with the data he acquired during his time, he was sure that he could create a good one. 

If all of his body was destroyed, he would've had no choice but since his eye had remained, he would take his eye as the basis and create his new body. 

After devouring his body, the black smoke had become very active as it had advanced much, after all, it had devoured the body of a second-tier. If not for the deliberate weakening of his own body, it would've never had the chance to completely destroy his body. 

His body was protected by the dimension strings after all. 

Now how he would design his body would depend on him, but he will choose the human form, he still wanted to stay lowkey after all.

The first thing he will create is his bones. 

Starting from his eye, slowly his skull formed. The newly formed skull had a tinge of black, it was the result of using the black smoke to strengthen his bones. 

After the skull was the spine, and after the spine would be the ribs and so on, his entire bone structure was created. 

After the bones would be the organs, muscle, fat, connective tissues and the blood vessels. 

Right now, he had regained his human form completely, his empty eye had been restored as the previous runic damage had been cleared after his physical body had been destroyed.

His muscles were gray with little red in it, with the tight muscles in his body he looked not much different from an undead, fortunately the skin would cover all of this. 

But this was the side effects of strengthening himself, and he didn't dislike it. For strength, appearance is secondary. 

Now the only thing left was the skin and blood, then he would be able to comprehend the death rune. 

But comprehending it would be much easier, as the preconditions for learning it had already reached and all it was left was to comprehend it. With his current perception and talent, comprehending it wouldn't take long.

After three days, equaling 37 days, he had created his body completely. 

Now it was turn for him to comprehend the death rune.