Upon entering, he could indeed see that his Cursed Core, which had been dormant for several days, was now beginning to function with a faint, slightly dark light. The cursed energy that entered him did the same procedure it did in the previous Core, this time guided by Klaus himself.
'Here, I can guide it, but it's a little slower than in the other Core...' He thought.
'Could it be that I can get it out of the Core?' His sudden thought arose because he was sure that the 'star' that would eventually form was his body. So, if he can do that process in the Core, he should also be able to do it in his body.
So he tried to pull the energy out of the Core as he had thought, and he was able to do so. The cursed energy that came out of the Core could be in his body freely, and here, he could also do the same process of forming a base and then try to form the star.
It was easier to control it here.
'It must be because the core is itself a part of my body, but I am more familiar with my body, so controlling its outside of it is relatively easier,' He thought.
His discovery graced his face with a smile.
If the circular motions are to form a base, then they are necessary. That base is possibly the one that would create the small, visible, or invisible tunnels through which the cursed energy would move in the future.
At the same time, the star figure that Klaus calculated would happen in the future was the final phase of the body's movement. Once that phase was completed, the cursed energy would travel through the body constantly and make it easier to use.
Having energy in every limb of the body was important; he knew this from before. If not, it would take too long for the energy to get from one place to another, which would hinder his ability in battle. And considering that his understanding of energy was very limited currently, there might be more benefits, but for now, he was totally satisfied with that.
Besides, the most amazing thing was not the discovery itself but the fact that it was so perfect and calculated.
'It seems that this world is very well thought out. I wonder what other such interesting things I will have to go through to reach the apex of this world.' Klaus smiled and looked inside his body once more.
'Will I be able to use cursed energy and train with it now?' he thought. He immediately went out into his body.
Opening his eyes again. 'May I?' he thought. He could feel his body slightly cold, which was a good sign. This was the coldness of cursed energy.
Therefore, he lowered his body slowly and punched to the front. He wanted to see if he could now absorb cursed energy, which would allow him to quickly become very strong.
In doing so, he did not measure his strength or do it very hard, so the area of activation of his energy was small, but it was still enough to draw the energies into his body.
He watched as the cursed energy rushed into his body, and as soon as it touched him, he felt an intense cold that he had not felt before. Suddenly, the energy passed him by and did not enter his body.
He frowned but tapped several more times for confirmation.
After a moment, he stood still.
'The intense cold must be because I understand more of the cursed energy. But it still won't enter me.' He sighed.
It seemed there was still a long way to go in his path.
'If I can't absorb it, can I at least use the one I have inside my body?' He thought.
If that idea didn't work, he would have to resign himself to continuing to use the little positive energy in this world.
So he took a deep breath and then raised his hand. He immediately thought of moving his energy into the hand while staring at it.
Soon, the hand was filled with energy but was slightly warm.
'Positive energy... Do I also have to train the independent movement of the cursed energy, like I did when she taught me?' He thought, a little overwhelmed by this. That would be annoying.
While it seemed logical, going through the same training again just because he had two types of energy was annoying. It would mean he would have to train twice from now on.
'But it has a lot of logic...'
The movement of the positive energy could happen because, internally, that energy had already formed the corresponding tunnels for its correct movement. But the cursed energy had not. Therefore, he also needed to build those passages or tunnels for that energy.
'Being unique also has its cons, eh.' He thought, smiling mockingly to himself.
Still, suddenly, his eyes sparkled.
'Wait... If the circular movements and the subsequent turning of those movements into a star are to create the tunnels through which it moves, is it possible to train both energies simultaneously? By allowing the inner energy to circle while externally absorbing positive energy, I would kill two birds with one stone.'
When he realized this, his eyes shone. He looked at the place where the cursed core of corruption was. It had disappeared because it had already been used. But somehow, Klaus realized that the insight that core had was very valuable. Not only would it make his training much more effective from now on, but it would also allow him to realize amazing secrets in the movements of energy.
Although he himself did not know that, in reality, the understanding the core had was nothing special at all. Many had been able to see it, but no one had managed to realize what it meant. Only someone like him could realize atypical movements in energy at the first time, after all.
He didn't want to waste time. He knew that training now would not give him the results he wanted in the short term, but there was still one more Core to study, so he sat down and focused on investigating it in depth.
If a single cursed core had given him so much valuable information, he was hopeful that he might get something of equal value by studying another. It might even be much more valuable than what he got. After all, he didn't acquire the skill this time.
With each passing minute, he also allowed the energy within him to circulate throughout his body, thus forming the foundation he needed, albeit very slowly.