A Demon King Through The Worlds

It is known that when a human ends up getting a very high level of rc cells, he ends up suffering from the disease of excessive rc secretion.

This disease causes cysts and tumors that end up deforming and killing the person who contracts it, but theoretically, if they were able to adapt to the large number of rc cells, they would gradually become ghouls.

Just a matter of the survival of the fittest, those who are able to evolve to a higher point being the only ones to survive.

Then, with a mastery that would be impossible for ordinary people, Lucian removed a kakuhou along with a large number of rc vessels.

After that, he placed this vascular-like assembly in a special container that he had previously prepared.

"Considering it's structure, I think it can be named quite simply — RC Cell Circulation System." He named it simplistically when observing the organ set he had removed from his subject.

The best way to describe this container would be to call it a box of icy blood, Lucian had created it using Douma's kekkijutsu.

Precise control of low temperatures would decrease the activity of the cells contained in this RC circulation system, ensuring that it would remain in good condition for as long as necessary.

"Now I'm going to repeat the process 49 more times."

Even though the process was fun, after repeating it so many times in a short period of time, it soon became boring.

However, there were 50 RC cell circulation systems, perfectly preserved inside their respective refrigerated containers.

"Now we just have to carry out a processing to facilitate the merger." Lucian smiled, happy that his work was about to end.

Like most people, he prefers to enjoy the fruits of his labor rather than the process of labor.

"Considering what I observed in Kaneki, along with the fusion process I went through, I can come to the conclusion that stabilizing rc cells and increasing compatibility between organisms is something very necessary."

Of course, the compatibility between transplanted organs is always important.

However, in this case the importance is even greater, considering that the concentration of rc cells can reach the point of causing racial differentiation.

In addition, they must be stabilized to avoid improper division, which could cause a tumor, among other things.

Dr. Kanou's failed experiments serve as the best example of what happens when fusion fails.

'Not that humans and demons react similarly to external objects'

After all, human bodies reject these objects from the outside and end up suffering various diseases, meanwhile, the bodies of demons assimilate such objects, whether organic or inorganic.

Lucian then manifested a wolf-like head from his back.

The head possessing a dense red "coat" moved smoothly, its huge eyes possessing red circles covering its white sclera, but strangely, in the center, where the pupil should have been, there was only an extension of this white.

Lucian took one of the rc circulation systems and put it in his mouth full of sharp teeth.

The large wolf head began to chew and after a few minutes, it opened its mouth again, revealing a fleshy red ball.

Looking at this, Lucian smiled and removed the object from its "refinement central", catching the ball in his right hand.

This ball is a dense structure of rc cells, reduced in size to facilitate insertion into one body, stabilized for easy integration into another organism, and "docilized" to increase compatibility.

In addition to the fact that Lucian had recorded a command on this ball of cells — to take the initiative to fuse when introduced into an organism, spreading the rc vessels very efficiently.

Although the process of creating this ball seems easy, it was actually extremely complicated.

It had to act in a similar way to a virus, invading the cells and performing a small modification inside them.

"Unfortunately, at the moment, my ability to modify cells is still very limited."

'Red Child Cells... It's a very good name, so I don't intend to change it.'

Then he soon returned to the tedious process of performing the same thing 50 times.

And no, he couldn't do it all at once, each of these rc balls needs his full attention, making mass refinement impossible.

"However, this is worth it, rc cells bring many possibilities. They can be molded according to the imagination and can even create life."

Although it may seem that the ability to create family members is to create life, the difference is still different, as family members are not able to perform complex activities and do not have autonomy worthy of note.

In addition to the fact that when they stray too far from their creator, they only die, turning into ashes.

Many of the abilities granted by the rc cells overlap with the abilities of the demons, but this is a good thing as it strengthens them.

Thus increasing the malleability of the demons' bodily tissues to an even higher level, not to mention the increased rigidity of the tissues, which has been observed previously.

By combining the physical capabilities granted by the rc cells with the vigor, vitality, and regenerative capacity of the demons, a qualitative change would occur.

Even though Lucian didn't want to admit that demons possess a major disability, they do, their physical capabilities improve at a very slow rate when compared to their regenerative capabilities.

In comparison, the weak point of ghouls is usually their inability to use their kagune for a long period of time, especially for those who have the ukaku-type rc, being the lowest stamina among the four types.

Therefore, a merger between the two would compensate for the weaknesses they both have.

"Huh?" Suddenly he raised his head, his ramblings being prevented by the warning of one of his relatives.

This one in particular had been placed to watch over Ryoko and Hinami, ensuring that Lucian was able to react if any problems appeared.

Then he teleported himself into the place his familiar indicated, disappearing from the infinite castle.

...

The next moment, Lucian appeared on a street, which although it was a busy time, was empty.

Raindrops fell on his skin, and even though the rain overshadowed the sounds to a certain extent, he could still hear some exclamations in the distance.

People complaining about seeing ghouls while fleeing.

Ignoring these unimportant humans, Lucian soon turned his attention to why he had come.

"Go!" Ryoku shouted to Hinami, her kagune open, ready to defend her daughter's retreat.

She knew she couldn't beat the two CCG investigators in front of her.

However, unlike her and Hinami, Mado Kureo and Amon Koutaro could see Lucian who had emerged behind both of them.

'What speed would it take for me not to notice his approach?!?' Mado's pupils shrank, terrified by the unexpected arrival of a third enemy:

"Who are you?!" He retreated, at the same time, as he prepared his quinque for combat.

Seeing Mado's actions, although Amon did not understand the reasons, he quickly repeated the same.

No matter what doubts he might have at this moment, in this extremely dangerous profession those who are not attentive die early.

"I'm the protector of these two," Lucian said, then walked over and stood in front of Ryoko and Hinami.

"Onii-chan! You're here!" Hinami reacted surprised to see the figure in front of her, blocking the enemies who wanted to kill her and her mother.

Again bringing a sense of security to her, who had lost her father months ago.

And Ryoko, even if she kept quiet, anyone with sharp eyesight could see the emotion on her face.

A relief taking over her body knowing that she and her daughter would be safe.