The Demon King.
The Progenitor of Demons.
Kibutsuji Muzan.
This person, That Person, who plunged Tokyo Prefecture and even all of Japan into chaos for a thousand years, what has he been doing throughout his long life?
Leather shoes lightly trod on the soft white snow, but the young, curly-haired man left no footprints in his wake.
He strolled leisurely through the mountain forest shrouded in night, reliving his past life.
Searching for the blue spider lily.
Turning talented individuals into demons to see if they could conquer the sun, and if not, having them search for the blue spider lily on his behalf.
Infiltrating human society, raising funds, gathering connections, and then using those connections to search for the blue spider lily.
After Yoriichi Tsugikuni's death, everything he did for the rest of his life revolved around the blue spider lily.
The blue spider lily, recorded in the notes of the doctor who turned him into a demon over a thousand years ago, was said to allow demons to walk freely in the sun and become perfect beings.
Muzan was accustomed to frequenting deep mountains and old forests; these ancient, unexplored places had a greater chance of producing miracles... miracles, of course, only for him, but that was enough.
Light snowflakes began to fall again. Muzan emerged from the pine forest and saw a wooden cabin emanating signs of life in the desolate mountain woods.
Ah, someone is here.
He walked towards the wooden cabin. Was it a woodcutter living on the mountain?
It didn't matter, whoever it was.
He approached silently, and before pushing open the door, he tilted his head to glance at the neatly stacked firewood in front of the house.
The wooden door was pushed open, and the sound of the wooden latch breaking suddenly startled Kie from her sleep.
"Tanjirou?"
Thinking her eldest son, who had gone out to sell charcoal, had returned, she lifted her head and rubbed her eyes, but only saw half of a man's face, wearing a gentleman's hat.
Muzan slightly raised his face, his blood-red eyes under the felt hat devoid of any emotion.
One, two... six people.
Three were barely old enough; the remaining three should be killed.
Children so small, even if they became demons, would only be defeated by those Demon Slayer Corps swordsmen.
But, after being forcibly fed his blood, the woman he had the highest hopes for simply died.
Before her death, she even desperately shielded the little girl behind her... truly... useless human emotion.
And with just a thought, the girl she had protected so tightly died.
The house became noisy; the older boy also died.
One after another... but the girl in the pink kimono... after consuming his blood, stumbled out of the house, clutching the boy in her arms.
Did she want to save him?
Muzan narrowed his cat-like, blood-plum colored vertical pupils and killed the boy.
"Boring."
Stepping over the unconscious girl, Muzan pulled down his felt hat, then suddenly narrowed his eyes, looking towards the cliff... [Don't go!]
[Fan Zhu Ge, stop! Don't go, don't go! I'll call you Star Pillar-bro, isn't that enough?! Haruto, boo hoo hoo, my Haruto, don't go, I beg you!]
[Sacrificing a handsome guy at the beginning, I really thank you for that!]
[Who is this? How do you all know who this is?]
[I'm back after finishing the main story and then reading the side story... Fan Zhu Ge, don't go! You can't beat him!]
[Parents, younger siblings, and teacher all dead, right? Getting the Sasuke script, right? I got a premium membership to watch this? Do you have any conscience?]
Haruto's hands were trembling, partly from exhaustion after a full day's journey, and partly from the barrage of comments filling his vision.
It's really... really reached the main story!
The dense number of comments collectively heralded his imminent death!
Who is it, who is it!
An Upper Rank? Or... Haruto's mind was a jumbled mess, but he dared not stop.
Perhaps, perhaps if I'm faster... I might be able to change the beginning of this world!
Mt. Kumotori was right before him. He didn't choose the conventional path up the mountain but instead leaped up the cliff from the direction he had come.
The smell of blood! The pungent smell of blood!
Even though he didn't have Tanjirou's superior sense of smell, he still caught the scent of blood in the cold night wind!
He drew his blade and charged up the cliff, seeing a man at the end of his gaze!
The man was wearing a sharp suit, with a luxurious embroidered vest underneath, and a top hat... He was stepping over Nezuko and Rokuuta, both covered in blood, as he exited the Kamado Family home!
Blood rushed to his head. The moment Haruto met the man's gaze, he immediately knew his identity.
Kibutsuji Muzan!
The powerful oppressive aura of the Demon King made his heart tremble uncontrollably; in that instant, Haruto was completely unable to think.
"I've seen you," Kibutsuji Muzan said, looking at him. The next moment, he frowned slightly: "No, 'they' have seen you."
Nezuko, Rokuuta... dead? The house was silent... Kie, Takeo, Hanako, Shigeru... Where's Tanjirou? Is Tanjirou dead too?
Isn't he... the protagonist?
Calm down, Haruto! Look at what's in front of you, the demon in front of you!
"Anger, are you angry? Do you know this family?"
Muzan looked back at the dead, saying calmly, "They couldn't even withstand this much blood... much less become a demon that conquers the sun."
"These people are merely useless waste. Why are you angry because of them?
Humans are such fragile creatures. Birth, old age, sickness, and death are merely forms of life for them."
Muzan... he didn't kill them because of Tanjirou? He killed them to create demons, demons that weren't afraid of the sun, so he casually... casually murdered them?
Haruto's body trembled even more violently; this time, it wasn't from fear, but from uncontrollable rage!
"Why..."
Muzan looked at him: "Why? I've truly grown sick of hearing that phrase over these thousand years.
Why can't useless existences be erased?
Life and death are merely things that boring people fuss over.
I'm interested in you... would you like to pursue deeper, more valuable things with me?"
His gaze fixed on Haruto's face, and he extended his hand to him: "It's almost dawn. Drink this blood and come with me.
Douma said you are a very interesting person.
And... if I turn you into a demon, that dim-witted fellow should be overjoyed."
"To receive the favor of the Demon King... what an honor," Haruto raised his eyes, and a raging inferno burned in his misty blue eyes.
"But that child... the child you just stepped over!
I... I really enjoyed the sweets she made!"
His blade flashed, and he lunged at Muzan like a bolt of lightning.
"Breath of the Stars, Sixth Form: Falling Star Flash!"