Somewhere in Japan, inside a quiet and peaceful home, a family sat around their beloved adopted son, Toshikuni.
"Toshikuni, you are truly a gift from the heavens!" his adoptive mother gushed, patting his head.
"So intelligent! So kind! So... pale." His father squinted. "Are you sure you're getting enough sunlight, son?"
Toshikuni, who was none other than the demon overlord Muzan Kibutsuji in disguise, simply smiled politely.
"Oh, father. You know I'm... sensitive to the sun." and left the hall and entered his room and locked it.
He turned his attention back to the botany book in his hands, flipping through it absentmindedly. The Blue Spider Lily. The key to his immortality, and yet, after centuries, he still couldn't find it.
His pleasant, fake-family moment was suddenly shattered as the curtains violently shook.
Two figures appeared from the shadows, stepping into the room like villains in a badly written drama.
Akaza and Doma.
Doma waved cheerfully. "Muzan-sama! We're here to report!"
Akaza bowed deeply. "I have news, Muzan-sama."
Muzan's gentle human façademelted away in an instant. His once calm blue eyes darkened into crimson pools of malice.
Akaza, trying to sound confident, knelt before Muzan.
"I regret to inform you… that the Blue Spider Lily has not yet been found."
Silence.
Cold, murderous silence.
Doma, sensing a storm coming, quickly interjected. "But, Muzan-sama! We have made progress! I Identified the Source of Demon Slayers Corp Rise last few years!"
Muzan scoffed.
"And you think that's an accomplishment?"
Before either of them could react, Muzan casually flicked his wrist.
A horrifying painripped through their bodies.
Akaza and Doma screamed, clutching their decaying flesh as their cells began to rot and bleed uncontrollably.
"Did I tell you to celebrate every small achievement?!" Muzan snapped.
Akaza writhed. "P-please, Muzan-sama!"
Doma winced but still smiled. "Ahaha… you always have the best punishments, Lord Muzan."
Muzan glared. "Don't test me, Doma. You're already on thin ice."
After a few more agonizing seconds, Muzan released his hold, letting the two demons collapse.
"Tell me about the Yujiro guy," Muzan demanded.
Akaza, still half-decayed, muttered. "He's… terrifying. He toyed with me. He didn't even take the fight seriously."
Doma, still gasping, added, "And the Flame Hashira... survived."
Muzan's eye twitched.
"And the… Rise of Demon Slayer Corp…?"
Doma nodded weakly. "The Demon Slayers are getting stronger because of him. He's the one who killed Rui. He might be the biggest threat we've seen in years."
Muzan's anger boiled.
First, Yoriichi Tsugikuni Imagination on the haunted house.
Then, a freak of nature like Yujiro Hanma shows up.
Now, a "Little Lord" is turning Demon Slayers into Force to reckon with.
Muzan rubbed his temples.
"This is an omen. An omen of disaster."
With a final dismissive wave, Muzan sent Akaza and Doma away.
"Get out of my sight."
As they vanished, Muzan sat back, lost in thought.
Meanwhile, at Demon Slayer HQ, a crucial meeting was underway.
The Hashiras, along with new rising stars, were gathered inside Raja's mansion.
Rengoku stood proudly.
"Let me tell you all what happened! I, without even awakening my Mark, fought an Upper Rank demon and emerged victorious!"
The Hashiras murmured in shock.
Rengoku pointed at Yujiro (Who is absent).
"And Yujiro Hanma? He toyed with Akaza like a cat plays with a mouse!"
Sanemi, scoffing, crossed his arms. "Tch. He really that strong?"
Raja, grinning, leaned forward.
"Yujiro Hanma has a Demon Body. If he ever turned into an actual demon, he would be stronger than Muzan."
Silence.
Tengen narrowed his eyes. "You serious?"
"Yes. His body is like Divine Bodies of Gyomei's, Mitsuri's, and Muichiro's, but he perfected it."
Raja began his lecture.
"There exist Divine Bodies, a rare phenomenon. One such example? Yoriichi Tsugikuni."
Everyone stiffened at the name.
Raja continued.
"Yoriichi was born with the Demon Slayer Mark—a gift from birth. He invented Breathing Styles, including the strongest: Sun Breathing."
Tanjiro's eyes widened.
"He also possessed the Transparent World—a vision that lets one see an opponent's blood flow and muscle contractions. Combined with his Selfless State, it made him nearly invincible."
The room was silent, absorbing this information.
"He had a twin, Michikatsu, who fell to darkness and became Upper Rank 1, Kokushibo. But even in his old age, Yoriichi almost killed him with one strike."
Tanjiro clenched his fists. "I… I must learn this!"
Raja grinned.
"You and Muichiro are the best candidates for unlocking the Transparent World and Selfless State."
Muichiro blinked."Me?"
"Yes. Yoriichi Tsugikuni is your ancestor and the cause of potential in you. You just need the right push."
This made all the Hashira's jaw drops on the floor and raja is enjoying the Chaos.
Finally, Raja got to the real strategy.
"To kill Muzan, we must stop his slime-flesh escape technique. If he can split and regenerate elsewhere, we'll never win."
Gyomei nodded gravely."Then how do we stop that?"
"Tamayo-san and I had already created a virus that stops his slime-flesh escape technique."
"We overwhelm him. Hold him in place. And wait for the sunlight."
Rengoku's flames flickered.
"Then we train. We become stronger than ever before."
Tanjiro stood, determination in his eyes.
"I will master Sun Breathing, Awaken The Slayer Mark and Transparent World."
Inosuke flexed dramatically.
"I will master Beast Breathing Slayer Mark and DESTROY HIM!"
Zenitsu cried in a corner.
"I just want to live, man…"
Raja grinned.
"Well then… let's begin."
TO BE CONTINUED…