This is a wooden cabin located deep in the mountains.
The soft sunlight filtered through the leaves, illuminating the rather ordinary-looking little house, making it appear quite cozy.
"My esteemed guest, I have been waiting for you here for a long time."
A gentle voice rang out, and a tall, slender man with red hair in a high ponytail, wearing a red haori and a pair of pendants hanging from his ears pushed open the wooden door and invited Meikyō:
"Uchiha Meikyō, right? I know you're tired right now, why don't you come in and have some tea?"
This is... Tsugikuni Yoriichi?
How did I end up meeting this guy?
Moreover, this is clearly different from the scene Tanjiro saw through his ancestor's bloodline memories when he was unconscious in the original timeline.
Meikyō was certain that the man in front of him was speaking directly to him.
Following Tsugikuni Yoriichi's footsteps, Meikyō entered the hut.
The decorations here are quite rustic.
Soon, Tsugikuni Yoriichi handed a cup of tea to Meikyō.
"Drink it, it's good for you, it's my way of thanking you."
Tsugikuni Yoriichi smiled and said to Meikyō.
Even without Tsugikuni Yoriichi, Meikyō could sense that this cup of tea was extraordinary.
Whose tea emits a golden glow?
"Glug glug glug..."
Meikyō picked up the teacup and gulped down the tea, even trying to lick the remaining teacup clean.
Tsugikuni Yoriichi watched Meikyō's actions.
"Alright, I'm offering you tea, and by accepting this cup, you're showing your agreement to my gift."
"Oh."
Meikyō nodded blankly.
Seeing that Meikyō was somewhat puzzled Tsugikuni Yoriichi smiled and explained:
"The way of all things has its own logic; only by acting in accordance with the rules of this world can one reap rewards."
Meikyō seemed to understand, but not quite.
"By the way, Mr. Tsugikuni, shouldn't you have... passed away three hundred years ago? How could this be..."
Although Meikyō already had a vague guess in her heart, she still couldn't help but ask Tsugikuni Yoriichi curiosity.
"I did leave this world three hundred years ago, but I only left behind what I had to leave behind, and returned to where I belonged."
Is this the place?
Tsugikuni Yoriichi nodded slightly.
"The scene here is just the scene I want to show you; in fact, it could be anywhere."
Tsugikuni Yoriichi hand, Meikyō suddenly felt her field of vision gradually rise, and the small house below transformed into the Butterfly Mansion.
Through the window, Meikyō could even see that she was now lying in a hospital bed, being taken care of by three little girls with beady eyes.
Kochō Shinobu was in a nearby room, bandaging the wound of Uzui Tengen, who had lost an arm.
Tsugikuni Yoriichi waved his hand again.
The University of Tokyo's biological research institute, currently under reconstruction; a bustling town; street vendors; mountains; the sea; deserts; islands...
Finally, it turned back into the little house.
"This is the core of this world, and I, as a human being, have returned here after a life full of failures, because I am an incarnation of the world consciousness of this world."
It can only be said that Yoriichi Tsugikuni's reputation as Tsugikuni Yoriichi is truly well-deserved...
Tsugikuni Yoriichi smiled slightly again, and the scene before him suddenly changed to a hospital ward. Then, Tsugikuni Yoriichi pointed at a patient on the bed.
A canvas suddenly appeared before Meikyō's eyes, demonstrating the condition inside the patient's body.
"Muzan Kibutsuji and all the demons were born from mutations that occurred within the evolution of this world, just like the mutated cancer cells that appeared in this patient's body. They can multiply Infinity and exist for a long time by plundering the nutrients of this world."
On the canvas, a scene of cancer cells proliferating in the patient's body suddenly appeared. Then, a scene appeared of young Muzan Kibutsuji turning into a demon after swallowing the doctor's medicine, and then turning other people into demons one after another.
"The swordsmen of the Demon Slayer Corps are originally white blood cells generated by the world itself to deal with Muzan Kibutsuji. As for me, Tsugikuni Yoriichi, I am a clone that emerged after the world consciousness evolved for seven hundred years after Muzan Kibutsuji appeared, expending a great deal of power to generate the Breathing Technique. I brought the Breathing Technique to the Demon Slayer Corps to strengthen the abilities of the white blood cells and prevent the cancer cells from spreading further. This is my first mission."
On the canvas, there is a scene of Tsugikuni Yoriichi joining the Demon Slayer Corps and teaching Breathing Technique to other swordsmen.
"As for the second mission, it is to try to eliminate Muzan Kibutsuji, the source of everything. But unfortunately, while the world consciousness can accelerate the evolution of this world, it cannot directly change the course of this world. It takes an extremely long time to make changes little by little. So no matter how strong I am, I will always be a little short of killing Muzan Kibutsuji. Therefore, I have to settle for second best and leave some traces of this time as much as possible to accelerate the arrival of this time."
"When the time comes, someone will be able to follow my trail to the same end and eventually kill Muzan Kibutsuji end up in the same place.'"
At this Tsugikuni Yoriichi pointed to the Meikyō again.
"And you are not only the one who will follow in the footsteps of the path, but also an external force."
Meikyō was not surprised that Tsugikuni Yoriichi realized that he did not belong to this world.
It's normal for someone who embodies world consciousness to see this.
"Just like when a patient gets sick, relying solely on their own immune system to recover, although there is a possibility of success, it takes a very long time and carries a high risk. However, if a doctor acts as an external force and uses other methods to treat the patient, then the treatment time can be shortened and the risks can be greatly reduced."
"In fact, after three hundred years of evolution, even without your arrival, the world consciousness would have guided the Demon Slayer Corps and Muzan Kibutsuji to a final battle soon. If they failed, it would take hundreds or thousands of years to start a second battle. In fact, as the power of the demons grows stronger, the world might not even have to wait for a second battle before it becomes a world of demons, and the world's consciousness would be corrupted until it perishes."
"Therefore, I would like to express my gratitude to you, doctor. As the embodiment of world consciousness, I thank you for helping me eliminate Muzan Kibutsuji. As Tsugikuni Yoriichi, I also thank you for helping my brother, Tsugikuni Yoriichi Tsugikuni Yoriichi."
Tsugikuni Yoriichi said sincerely.