He truly was unwilling to take risks.
Even with an immortal body, capable of instantly recovering from any fatal injury, and being the strongest life form on the Demon Slayer Continent.
He was still panicking.
Back then, the sword strike from Yoriichi Tsugikuni, who wielded Sun Breathing, shattered the confidence he had painstakingly built up.
Even though Yoriichi Tsugikuni had died many years ago, he still worried that there might be similar beings among humans.
"No."
Muzan Kibutsuji shook his head and said, "The number of people chosen by the Reincarnation Game invitation letter is very small; so far, it's only been me and Hantengu."
If he were to actively send demons to search for the invited, it was inevitable that other demons would become curious about the Reincarnation Game invitation letter.
This hesitant state, if it were any other leader with the control of a Demon King, would not cause such a dilemma, but it happened to befall the Demon King, who had a terrible yet cowardly personality.
"Fine, I have an immortal body; if anything happens, I'll just exit the game."
Muzan Kibutsuji finally made his decision to accept the game's invitation.
The next second, his figure vanished from Infinity Castle, reappearing instead in a lush, giant forest.
Giant mushroom-like canopies blocked out the entire sky, simultaneously blocking out the sunlight.
Within the dark and eerie dense forest, chilling roars constantly echoed.
"Is this the game world?"
Muzan Kibutsuji quickly exited the game as Hantengu had described, finding himself back in Infinity Castle without any hindrance.
Nakime was utterly bewildered.
Hadn't Lord Muzan just said he was leaving for a while? Why had he suddenly returned?
But she did not utter a sound.
None of Lord Muzan's decisions were for his subordinates to question.
And so, Nakime watched with wide eyes as Muzan Kibutsuji repeatedly appeared, disappeared, and reappeared, only to vanish completely after several such instances.
Muzan Kibutsuji nodded with satisfaction and said, "Very good. Since I can exit directly, there's nothing to fear."
He reverted to his original appearance and wandered through the forest.
Bang.
Muzan extended his arm, transforming it into a grotesque and terrifying mass of flesh, which lashed out like a whip of flesh.
A Minotaur wielding a giant axe swung its axe, severing the attacking arm.
But it didn't expect that the severed arm would suddenly grow new flesh, opening a gaping maw and directly biting off the Minotaur's head.
"To be able to cut off my arm, these monsters are stronger than I imagined."
Muzan Kibutsuji showed a surprised expression.
After creating countless demons and the Twelve Demon Moons, he very rarely took action against the Demon Slayer Corps.
His combat experience was not extensive, but his near-perfect life and flesh gave him exaggerated combat power; aside from special characters like Yoriichi Tsugikuni, all of the Demon Slayer Corps combined would not be able to inflict damage on him.
Of course, there was also an element of testing and underestimation involved.
However, it could also be roughly determined that the weakest of these monsters were only slightly stronger than ordinary demons, while the stronger ones even possessed the strength of an Upper Rank Demon.
They posed no threat to him whatsoever.
Thinking of this, Muzan Kibutsuji finally breathed a slight sigh of relief, letting loose and continuously hunting monsters in Gran Forest.
After accumulating two hundred reward points, he exchanged them for an item in the game Store.
"Let me see what kind of ability something dared to be sold as a commodity possesses?"
Muzan Kibutsuji's gaze was disdainful.
He didn't care about the item's attributes; as the most perfect life form, all he needed was the blue spider lily.
Other items would not be placed in his eyes.
A glass bottle appeared out of thin air, with clear blue liquid inside.
[Secret Experimental Potion of the Lurker Organization (Inferior Red Zombie)]:
Upon consumption, there is a 69% chance of becoming a secondary biochemical zombie, a 30.999999% chance of becoming a red biochemical zombie, and a 0.000001% chance of becoming a perfect bioweapon.
"Perfect bioweapon?"
Muzan Kibutsuji's grip on the glass bottle involuntarily tightened.
His thousand-year search for the blue spider lily had given him a natural emphasis on the word 'perfect'.
After detailed perusal, information about biochemical zombies flooded his mind.
Muzan Kibutsuji's eyes widened, and he whispered, "To think there's such miraculous research, virus genes, constantly infecting humans to become new zombies."
This organization called Lurker had the same methods as him.
However, the zombies created by this potion were incredibly weak compared to his demons.
Especially the secondary zombies, which had a high probability of forming, could even be killed by ordinary people with weapons, and the red zombies, which had an extremely small probability of forming, were only comparable to a Lower Rank Demon.
But what Muzan valued was the potential behind this potion.
Especially the game text's description of [perfect bioweapon]: ageless, immortal, fearless of sunlight.
"It seems this potion is the initial experimental result; as long as research continues, the potion can become more and more perfect, greatly enhancing its abilities."
Muzan Kibutsuji's breathing became heavy, his eyes fixed on the game description text for the perfect bioweapon.
Being able to walk in the sunlight had become his thousand-year obsession.
The whereabouts of the blue spider lily had been unknown, making Muzan Kibutsuji begin to doubt whether what the doctor had said back then was true or false.
Perhaps the blue spider lily did not exist at all?
And now, a new possibility that could help him transform appeared before his eyes, though the probability was pitifully low.
"Is it true or false?"
Although Muzan Kibutsuji was excited, he was not completely carried away by the idea of a perfect life.
No matter how exaggerated the claims, if they were false, they would be meaningless.
He returned to Infinity Castle, suppressing his surging emotions, and calmly said to Nakime, "Bring a Lower Rank Demon over."
"Yes, Lord Muzan."
Nakime obediently plucked the strings of her biwa, opening the door to Infinity Castle.
Soon, a Lower Rank Demon with black hair, a beard, and mottled patterns on his face appeared in Infinity Castle.
At first, he was a bit bewildered, but once he understood what was happening, he immediately knelt down in fear, not daring to even raise his head.
Outside, they were Lower Rank Demon Moons who treated ordinary humans as mere flesh and other demons as useless.
But here in Infinity Castle, in front of Muzan, they were not much better than that human flesh.
"You are... it doesn't matter."
Muzan Kibutsuji frowned, thought for a moment, and had somewhat forgotten the name of this Lower Rank Demon, but these things were not important to him.
"To be chosen by me is your fortune."
The potion brought from the game was tossed by the hand of Lower Rank Two.
Muzan Kibutsuji said indifferently, "Drink it, and you will gain even greater power."
The price of becoming a secondary zombie was losing one's intellect and devolving into a beast-like creature.
But experiments always had sacrifices.
It was just a Lower Rank Demon; he could create as many as he wanted.
"Yes, Lord Muzan!"
Lower Rank Two, named Rokuro, somewhat flattered, picked up the potion bottle.
He thought he had eaten many humans and was about to be highly regarded by Lord Muzan, but after seeing the liquid inside the potion bottle, he was slightly puzzled.
To become stronger, one needed the blood bestowed by Lord Muzan.
This was the consensus of all demons.
But the liquid in this bottle didn't seem to be blood at all, did it? Nor did he smell any hint of blood.
However, this was Lord Muzan's command; even if he had doubts, Rokuro dared not ask more and could only brace himself to pull out the stopper and drink it.
"Lord Muzan, I'm in so much pain!"
After drinking the potion, Rokuro felt his entire body begin to burn, his flesh and bones seeming to dissolve, the potion rapidly breaking down inside him.
Rokuro's skin began to fester, but then rapidly healed due to Muzan's blood, alternating back and forth.
The Lower Rank Demon writhed on the ground in agony.
"Endure it."
Muzan Kibutsuji watched the Lower Rank Demon's transformation with cold eyes until he lay motionless on the ground.
Roar.
Suddenly, the greatly changed Lower Rank Demon leaped up and charged frantically at Muzan Kibutsuji.
His entire body's skin had burst, revealing scarlet muscle fibers; his whole body was covered in stark white bones that protruded like bone spikes, and two spike-like bones extended from his palms, resembling a pair of bone claws.
A red zombie.
Muzan Kibutsuji hadn't expected his luck to be so good, directly creating the lower-probability red zombie.
This also confirmed the authenticity of that potion.
"Has it lost its reason?"
Muzan Kibutsuji's gaze was calm.
The moment the mutated Lower Rank Demon charged, he had already killed him.
The remaining flesh was thrown out of Infinity Castle by Nakime and then teleported back by Nakime after a while.
That wriggling mass of flesh, infested with Muzan's blood and the viral potion capable of causing mutation, had not disappeared, only slightly scorched.
There was still a faint residual heat from the sun on it.
Muzan Kibutsuji, who should have avoided the sun's temperature, was as excited as a hunter who had caught his prey, grabbing the mass of flesh in his hand despite the burning sensation.
"It wasn't incinerated by the sun, it wasn't incinerated by the sun!"
Muzan Kibutsuji lost his composure, his eyes filled with scarlet patterns, staring intently at the flesh in his hand.
The viral research potion from the game, after fusing with his own blood, could block the sun's incineration!
"The Lurker organization's zombie potion can overcome the problem of sunlight!"
Muzan Kibutsuji was thrilled.
Next, as long as he solved the side effect of losing reason, this potion would be his ladder to becoming a perfect being.
Reincarnation Game!
He no longer cared whether there was a conspiracy behind this game.
"Do I need to sell assets to exchange for reward points?"
Muzan Kibutsuji didn't care about so-called assets, although he didn't have any right now.
But to him, nearly a thousand years of time meant he had the ability and time to accumulate countless assets; if he wished, all the assets of the entire Demon Slayer Empire would fall into his hands.
Ordinary humans couldn't stop him, and the Demon Slayer Corps certainly couldn't.
"From now on, Muzan Kibutsuji is about to embark on the path to becoming a perfect life form!"
Muzan Kibutsuji was in high spirits, the gloom of not being able to find the blue spider lily for many years completely swept away.
Logging into the game again, he intended to purchase all the other items on the game's shelves.
As soon as he logged in, he found himself in the familiar forest, but with an additional figure.
Muzan Kibutsuji frowned slightly and said coldly, "Who are you? Get out of my sight."
He thought of Hantengu's invitation letter, knowing that he wasn't the only player in this Reincarnation Game; the person in front of him should be another game player like himself.
Damn it.
Although he didn't know who created the Reincarnation Game, were those weak nobodies also qualified to play the game? The true player should only be himself; that was the correct choice.
Thinking of this, Muzan Kibutsuji's arms had already transformed into tubular whips, carrying a strong, foul, bloody odor, covered in thorn-like barbs, and lashed out.
"Die."
Having already witnessed the powerful physiques of the monsters in Gran Forest, Muzan Kibutsuji did not underestimate his opponent, immediately unleashing his full strength, the thorn-like tubular whips even producing a sonic boom.
Full of confidence, his expression suddenly stiffened.
Hiss.
The opponent, who should have been torn to shreds by his killing move, flicked his tongue like a snake, licking his chin.
His hand, like an iron clamp, easily gripped the tubular whip he had swung with all his might.
His snake-like eyes were filled with an amused expression as they landed on the unprepared Muzan, and he said, "Mutated flesh-type abilities, huh? Very rare. After all, ordinary players with other game abilities wouldn't choose something that would cause body deformities."
"You'd make excellent research material. Could you cooperate with me for a moment?"
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