Villain: Ultimate Mutation System in the Alternate World

'Will my body hold on ?' He thought to himself . His mind racing with possible solution.

With 40 AP left, he allocated them to his endurance, recognizing its importance in increasing his overall tolerance.

Endurance (A-) > (A+) =40

The pressure from his body had subsided a little, but he felt like he needed to build a much stronger body to achieve better effects.

He could still see a lot of black-red aura pouring out of his skin, and he could tell that it was not good news for him at all.

'I needed to confined everything to build up the energy pressure more. ' He thought to himself.

If this breakthrough depended on his capacity, and his body was the vessel, then creating a super hard body was the key .

Enhance Bones (I)> (XX)

Bone Control (I) > (XX)

After increasing the skill of these two abilities, he exerted control over the bones inside his body, to form exoskeleton around him. .

His skin didn't just vanished; instead, it underwent a dramatic transformation.

It split apart, revealing the bone material beneath it. From each opening, the silver-colored bones emerged, growing outward and encasing his body in a protective shell.

The bones pushed through the skin's surface, replacing it entirely as they continued to extend and interlock, forming a sturdy exoskeleton that covered him from head to toe.

As he tried to moved, the exoskeleton glinted in the dim light, a proof to the new power coursing through him.

But he was not done yet; he felt like the center of the energy was coming from his heart. So, he completely closed off his ribcage, essentially making his body 80% bones.

When he did this, the energy inside had no way to release itself . It started to fill his body, becoming more concentrated by the second.

The energy swirl and churn within his heart, its intensity building steadily. With no means of release, the energy became more powerful, pulsating with power .

'Will my body hold up?'

Reign could feel the sensation of his bones vibrating non-stop, they were cracking under immense pressure.

It was akin to the sensation of being an eggshell, with the yolk inside struggling to break free from the intense heat.

But he knew he had to grit his teeth and endure.

This was a once-in-a-lifetime opportunity, and with the system assisting him, he couldn't afford to settle for less.

"ARGHHHHHH!" his scream echoed throughout the room, the sound so intense that even George and Mellisa felt the metal door trembling in response.

While enduring this ordeal, he exerted all his effort to reinforce the cracks in his bones, engaging in a battle of endurance to see how long he could last.

After three minutes, the energy finally began to subside, little by little.

His heart had now transformed into a crystal with a combination of black and red color. Instead of a beat, it sent energy waves throughout his body like a generator.

[System: Congratulations, Host, for being able to create a Legendary Level Energy Core.]

[Energy Core is the foundation of all demon after ascending to Upper Level]

[Energy Core Levels]

>Bronze -20% efficiency

>Silver -30% efficiency

>Gold -40% efficiency

>Diamond-70% efficiency

>Lord-100% efficiency

>King-150% efficiency

>Legendary -300% efficiency

Reign's 300 % efficiency meant that his mastery over energy surpassed even that of a demon with a Lord Level Core by threefold.

To illustrate, picture two cars of identical design.

Despite sharing the same blueprint, Reign's engine operates at least 300% more effectively.

In practical terms, this translates to him generating three times the power output using the same energy input, making his abilities substantially more formidable and sustainable in the long run.

And because this 300% increase was relative to the amount of energy he has, the stronger he became, the more visible the gap between him and other demons would become.

He would be unrivaled within his current rank and could potentially surpass it, challenging higher-ranking demons with inferior energy levels.

"Did I just win the lottery?" Reign grinned widely after realizing he had attained the highest possible Energy Core level.

As he concentrated, his silver bones hand began to change color, shifting to a deep black-red color.

His control over his energy was now so concentrated that no energy went to waste. Instead, it solidified in his hand.

"This is like the power of that person who wanted to become the pirate king," Reign thought to himself, recalling an old anime he used to watch.

Eager to test the effects of his enhanced energy control, Reign began crafting a sword out of bone, infusing it with his energy.

Initially, he had to familiarize himself with shaping his bones into more intricate forms, but after a while, he got the hang of it.

He didn't stop at just a sword; Reign went on to create an axe, a spear, a sledgehammer, a bow, and various other items.

They turned black-red when he infused energy into them, but when he released them from his hand, they reverted to their silver color.

After a few minutes, they dissolved into nothingness. It seemed his bones were incapable of existing if separated from his body for too long.

He had always wondered where his Claw Bullets projectiles went after being fired; now he knew the answer.

When he was finished testing , he focus on his remaining Skill Points. The maximum level for his skill now was 20 , so he still had some points to spare.

'I need to pick something that would help me in the long run,' Reign thought to himself.

The amount he had earned now might be big, but that was due to a stroke of luck.

Normally, he would only gain one skill point per level-up, so he needed to be wise about how he distributed them.

'I already have plenty of skills for attacking, so I should focus on movement related skills.' he mused inwardly.

In his battle with the five Divergents, he realized that even though he was fast, it was still not enough to dominate his enemies immediately .

With that in mind, he scanned his skills and picked the one he thought would help him the most.

Night Crawl (I) > (X)

It was the only skill he had related to movement speed, so it was the logical option.

Plus, if he incorporated his raw speed, plus the additional boost of his energy, then Night Crawl's speed would be even more impressive because it relied on his base speed.

After that he increase another skills that could aid him during battles where he needed to fight a lot of people at once.

Death Aura (I) > (XI)

Death Aura was a skill with an area-of-effect effect, and by leveling it up, he would be able to restrict or disrupt his enemies' movements if he timed it perfectly.

Now, with his energy reaching new heights in terms of quality and control, this skill had become a trump card for him.

"System, what rank am I now compared to the demons in this world?" Reign asked.

Before, the system had been very quiet, but he discovered that after getting the official one, it had become more responsive.

[System: Beginning Upper Rank ]

***

Authors Note :

>>Unranked

>>Lower

>>Middle

>>High

>>Upper

>>Demon Lords

>>Demon Kings

>>Demon Gods

Each rank is also divided into Beginning, Half step and Peak levels.

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