For the past few days, Lu Ming had either been running around Mount Sagiri with Tanjiro's younger siblings or boredly watching Tanjiro practice Water Breathing.
After spending a few days with Kie, Tanjuro also left Mount Sagiri to head to Fujikasane Mountain for the Final Selection.
Bored, Lu Ming had no choice but to enter the Manufacturing Space. He walked up to the artificial mechanical ovary and looked at Nezuko's demonized body floating in the pale blue energy liquid.
Lu Ming controlled the artificial mechanical ovary, extending a blood-sampling tentacle to draw a small amount of Nezuko's demon blood.
Lu Ming reached out and took the test tube filled with scarlet blood from the mechanical tentacle.
Then, Lu Ming created many instruments for studying blood.
Despite Lu Ming's careful observation and research, he gained nothing, except for discovering that the blood was extremely active and possessed incredible regenerative abilities.
Lu Ming had overestimated his own brain; in a fit of pique, he chose to use a cheat.
Using Concept-Grade Manufacturing, he generated the production method for the Concept-Grade ultimate biological serum.
Lu Ming checked the specific functions of the ultimate biological serum.
After using the ultimate biological serum, one gains eternal life and terrifying regenerative abilities.
Even if one dies, as long as a single cell remains in the world, they can restore themselves to their peak state in an instant.
By controlling cells to perform bodily transformations, one can change into various creatures. Unfortunately, it's only a change in appearance—however, if there is genetic material, the situation is different.
Because an Ultimate Lifeform can integrate any gene into its body, allowing for infinite evolution.
Anything that can threaten the Ultimate Lifeform will be useless the next time it's used after the first encounter.
A single drop of Ultimate Lifeform blood can evaporate into countless tiny cells in the air.
These tiny cells can infect an entire city in an instant, turning all living or non-living things into demons.
Even lifeless stones will be parasitized by cells to form mutated demons; the Ultimate Lifeform holds absolute dominance over demons.
Of course, becoming a demon also has great benefits, such as possessing eternal life, awakening hidden innate talents, condensing Blood Demon Arts, and being able to slowly resurrect even if the body is smashed into cells.
As Lu Ming looked at the detailed functions of the serum in his mind, his breathing became heavy.
Lu Ming couldn't wait to start making this terrifying thing. Although it was scary, if the user was himself, that was another matter entirely.
Lu Ming rushed and finally, after spending a whole day, he created this terrifying serum. He couldn't wait to inject it into his body.
But just after the injection, Lu Ming fell straight unconscious.
Inside the unconscious Lu Ming, every cell and gene was undergoing changes under the effect of the potion.
At this time, the spirits of all the concept-level itemss surrounded Lu Ming's body, waiting for their master to wake up.
When Lu Ming woke up again, he saw a circle of concept-level itemss surrounding him.
Lu Ming ignored them and instead felt his new body. He clenched his fist, feeling unprecedentedly powerful.
Lu Ming experimented with the various abilities of the ultimate lifeform in the Manufacturing Space. While playing around, he noticed the demonized Nezuko in the artificial mechanical ovary.
Lu Ming's eyes lit up when he saw the demonized Nezuko. He took her demonized body out of the pale blue energy liquid.
Lu Ming eagerly separated a tiny cell from his body, and this tiny cell quickly sank into the demonized Nezuko's body.
After a while, the demonized body began to twitch. Lu Ming looked at the constantly twitching body with a head full of questions.
Seeing this, Lu Ming shifted his consciousness to the cell from earlier with a single thought.
In this way, Lu Ming saw his own cell frantically infecting the Demon King cells inside the demonized Nezuko's body.
Muzan's Demon King cells were instantly devoured and transformed into new Ultimate Lifeform cells as soon as they approached the Ultimate Lifeform cell.
Just like that, Lu Ming's cells quickly took over the entire demonized body.
However, because this body had no soul, Lu Ming's Ultimate Lifeform cells instantly parasitized the entire body, creating a brand-new consciousness.
This cell inherited everything from this body and became a brand-new life.
Through this Ultimate Lifeform cell, Lu Ming also knew that she had obtained all the memories of this body.
Lu Ming squatted to the side, quietly watching the demonized Nezuko in front of him. The two of them just stared at each other, eye to eye.
Just as Lu Ming was feeling a bit awkward, the demonized Nezuko in front of him suddenly spoke up: "Master, is there something wrong with you looking at me like this?"
Hearing this, Lu Ming quickly waved his hands, "No, no, I just wanted to take a look at you, this brand-new life."
"By the way, you don't have a name yet, do you? Why don't you give yourself one?" Lu Ming said seriously.
"In that case, I'll be called Illusory Dream from now on," she said seriously.
"Illusory Dream, what talent did you awaken?" Lu Ming followed up with a question.
She said respectfully to Lu Ming: "Master, I have two Blood Demon Arts. One is the Blood Demon Art: Exploding Blood awakened by my predecessor, and the one I have awakened now is Infinite Clones."
Lu Ming looked at Illusory Dream, "So what exactly do your Blood Demon Arts do?"
"Yes, Master! My Blood Demon Art: Exploding Blood possesses a portion of the sun's power, which can burn and purify all kinds of evil and filthy forces.
Infinite Clones is just like its name; it can continuously produce clones that are exactly the same as myself, and the clones can even awaken new Blood Demon Arts."
Lu Ming carefully felt the two extra skills in his body. Their abilities were indeed as the Illusory Dream in front of him had described.
"Alright, I understand your situation now! Stay in this space for now and get familiar with your abilities." After adapting for a moment, Lu Ming left the Manufacturing Space and returned to the outside world.
At this time, Uzumaki Shiro was feeling uneasy in Mount Sagiri, afraid that Lu Ming had abandoned her and left alone. Seeing this, Kie and the others didn't know how to comfort her.
Just then, Lu Ming suddenly appeared in front of everyone and saw the group with long faces. "What's wrong with you guys? Why do you all look so miserable?"
Uzumaki Shiro's eyes turned slightly red when she saw Lu Ming suddenly appear, and she immediately ran over and hugged him.
Lu Ming was a bit dazed by the sudden hug. He looked at the girl with reddened eyes in front of him, "Uzumaki Shiro, what's wrong? Did you miss me that much after not seeing me for so short a time?"
Lu Ming teased Uzumaki Shiro, speaking with a grin.
Uzumaki Shiro looked at Lu Ming, "Where... where did you go? I haven't seen you for several days. I thought you had abandoned me and left."
Hearing this, Lu Ming was a bit stunned and thought: I remember I only stayed in the space for one day! How did several days pass all of a sudden?
Lu Ming pondered; could it be that injecting the ultimate biological serum caused me to be unconscious for several days?
Lu Ming shook his head and stopped thinking about it! "In that case, I'll make it up to you!"