"Damaging the wall, two inches," Lucifer echoed as he looked at the sword mark on the wall.

'If I attack too strongly, the wall will break. I should not aim to destroy the wall and just barely touch it,' he thought as he clenched his fist and punched the wall.

Even though he tried to attack as weakly as he could, a crater was left on the wall, which was at least five inches deep.

"Too deep. Even weaker," Lucifer repeated as he attacked again after he changed spots.

Unfortunately, this time his attack was so weak that it only made a crack on the wall.

In the distance, Kellian was observing Lucifer, shaking his head.

"It will take a long time, it seems. But this will give him a sense of his strength," he said as he folded his arms.

The attacks of Lucifer continued as he kept shifting location in the room after destroying walls occasionally.

Sometimes his attack was too weak even to leave an inch deep mark, while other times, it was so strong that it went overboard.

He wasn't able to find a perfect balance even after trying for over fifty times, but he did come close. He didn't give up as he kept getting closer to his target. He believed that he could do it. He could finish his goal. Defeat was never an option he could even think about.

...

Four hours had passed as Draco arrived at the floor with lunch for Lucifer and Kellian, only to be shocked.

The entire floor was covered in marks. All the walls were damaged. Kellian was standing in the middle while Lucifer was sitting, tired, gazing at his hand.

He walked towards them with the food in his hand.

"Good work. You finally succeeded. Now you understand how hard it is to control strength? You should always remember this feeling and this control. For the rest of the day, I'll train you more in it. By the time we are done, you'd be much better in controlling your strength."

"So much so that even if you fight, you'll be able to fight like a normal human without letting your strength trickle through unless you want it to."

As Draco approached the two people, he was able to hear their conversation.

Kellian glanced at Draco before telling him to place the food before Lucifer.

"Eat up. We'll continue after half an hour of rest."

...

The training continued throughout the day as Kellian taught Lucifer more about strength and how he could bring more perfection to his control.

The first day of training seemed like a success.

The second day soon arrived, where Yaliza came to train Lucifer.

Yaliza was another S-Rank Variant of Variant Uprising, but he was a bit different from Kellian. While Kellian used shadows and darkness to attack, Yaliza went for a more physical battle as a preference, even though he was also a master of long-range attacks.

With Yaliza's arrival, the focus of training shifted from control to using that control.

He was going to teach Lucifer how to fight like a human and how to kill effectively.

The training continued for the second day, where Yaliza taught Lucifer the fighting arts that seemed to be a combination of ancient martial arts and modern fighting styles.

He taught him how to defend himself against people that were stronger than him and how to kill them, all without using his powers.

The focus here wasn't Lucifer's strength but his skills so he could fight when he needed to without having to expose the fact that he was a Variant.

The second day also seemed to pass away in the blink of an eye as Lucifer immersed himself in training, trying to absorb all the information he was being given.

This was something that he was actually enjoying. Instead of having to think about things, he could divert his attention to training and getting stronger.

He still remembered that when he had come from the last test in the facility, he was told that he had failed. At that time, he already realized that he was never going to become a Variant. He cried the entire night before he finally thought of something.

He had promised himself to be a hero of humans like his father. So what if he couldn't become a Variant? There were many humans that fought without having any powers.

He could also learn to be like them? So what if he didn't have the powers of a Variant? He could train, and he could become the greatest human fighter there ever was.

Unfortunately, the night he thought this happened to be his last night in the facility as he was killed the next day, without getting any chance at survival.

Now that he was learning to fight like humans, there was a kind of excitement inside him. It was as if he was getting one of his desires fulfilled.

The training of Lucifer continued as days turned to weeks. He was taught how to use a gun, how to aim, how to reload, how to use a sword, and many other things.

All of this was completed in just three weeks. Moreover, what seemed to be surprising was that Lucifer was good at learning things.

He learned all of this too fast. The training, which should have taken longer, was already close to completion since Lucifer was performing better than expected and learning too fast.

As Kellian and Yaliza hadn't expected this speed, they were shocked to know that the four-week training schedule they had prepared was finished in just three weeks, and they had one more week remaining.

Throughout these weeks, Lucifer was also given more training, apart from the one provided by Kellian and Yaliza.

He was taught how to read and write in-depth. He was given table manners, and he was also taught how to behave like a high profile and rich human.

It was as if he was being given training on how to be a prince.

...

Kellian and Yaliza were sitting in a room, discussing if they should progress into more complex training about the human body, psychology, and other factors for the last week since their old schedule was finished.

"I don't think we should. One week is certainly not enough for all that. And after that one week, he would be going to that beach he keeps talking about," Yaliza told Kellian.

"True. We should start with the complex things after he returns," Kellian agreed.

"So, what should we teach him for the last week?" Yaliza asked.

"We should focus on his Wind Element. He really needs it," Kellian chimed in.