One Piece World.
On the Red Force, Shanks watched the video with great interest.
Tanjiro's outrageous headbutts were shocking, yes—
But what truly caught Shanks' attention was Tanjiro's swordsmanship.
He could tell immediately.
That flash of brilliance when Tanjiro swung his blade…
It was all thanks to that mysterious breathing technique.
And that breathing technique—
It was undeniably refined, complex, and powerful.
"If one were to master this breathing style…
Not only swordsmanship, but close-quarters combat, and even Haki control would improve significantly."
Shanks exhaled softly, both impressed and delighted.
He hadn't expected this strange "Multiversal Ranking" to benefit him so much.
But it truly had.
Whitebeard Pirates.
"What in the world is this breathing technique?"
Whitebeard stared at the warm vapor he exhaled.
He had imitated the breathing from the video just now—
Thinking nothing of it—
But the moment he used it, a stream of hot condensed breath poured out…
And miraculously—
The constant pain throughout his deteriorating body… lessened.
"This breathing style actually helps the body recover…?"
His eyes lit up.
He was old—
The new age had no place left for him.
But his beloved sons in the Whitebeard Pirates still needed him.
He could not fall.
Not yet.
Until now… he had no way to fight back against time.
Every time he used his powers, his body paid a disastrous price.
One more major fight…
would likely be his last.
But now?
This breathing technique—
This miracle—
could strengthen and stabilize his failing body!?
This was an unimaginable blessing.
At the very least…
Until his sons grow strong enough, he could still protect them.
"Gurararara!!
This is incredible!!"
Whitebeard burst into hearty laughter and raised a massive jug of sake, drinking deeply.
Multiverse Reaction
Many powerful beings across the worlds realized the same truth—
Breathing was not just breathing.
For peak-level fighters,
Breathing = rhythm.
Stable breathing meant stable offense and defense.
It determined tempo, precision, and the flow of battle.
This breathing style strengthened every part of one's combat ability.
Even those who didn't understand its theory—
Had already begun imitating it from the video alone.
And once mastered, they would adapt it into styles unique to themselves.
A wave of evolution swept the multiverse.
Back to the Video…
The progress bar approached its end.
Tanjiro's numerous headbutt highlights had shocked and amused everyone.
And then—
A new title slowly appeared on screen:
[Wind Hashira Arc]
The scene revealed multiple figures—
Giyu Tomioka (Water Hashira)
Shinobu Kocho (Insect Hashira)
Gyomei Himejima (Stone Hashira)
Kyojuro Rengoku (Flame Hashira)
Tengen Uzui (Sound Hashira)
Muichiro Tokito (Mist Hashira)
Mitsuri Kanroji (Love Hashira)
Obanai Iguro (Serpent Hashira)
Eight of the Demon Slayer Corps' mightiest warriors stood silently, watching.
The camera shifted—
Revealing a white-haired young man gripping a wooden box.
His expression twisted with murderous intent.
Opposite him—
Tanjiro, hands bound behind his back, kneeling for judgment.
Suddenly—
SWISH!!
The white-haired young man drew his Nichirin Blade with explosive killing intent.
SHUNK!!
The blade stabbed straight into the wooden box.
And through it—
Through the girl inside.
Blood seeped from the punctured box.
Nezuko.
[AAAAAAAHHHH!!!!]
Tanjiro roared in pure rage at the sight of his sister wounded.
[Heh… hehehe…]
The white-haired man grinned cruelly.
Tanjiro charged, eyes burning.
Even bound, even helpless—
He would allow no one to harm Nezuko.
A subtitle appeared:
[Sanemi Shinazugawa — Wind Hashira]
Sand cracked beneath Tanjiro's feet as he exploded forward.
He leapt—
Eyes filled with wrath, staring at Sanemi's hateful smirk.
And then—
BOOM!!
Sanemi froze.
He had been caught completely off guard.
Tanjiro's forehead rammed into his face with unstoppable force.
A crisp crack echoed.
The Wind Hashira's body flew backward—
Blood spraying from his nose in a violent burst.
His eyes rolled white.
THUD!!
Before the watching world—
The Wind Hashira collapsed unconscious from a headbutt.
His Nichirin Blade clattered to the ground beside him.
Tanjiro also fell—
But rolled and sprang back up instantly.
Without hesitation, he shielded Nezuko's box with his body.
His forehead gleamed under the sunlight.
Uninjured.
Untouched.
Untarnished.
The world collectively screamed:
"HOW IS HIS HEAD THIS HARD?!"
Demon Slayer World.
Sanemi's face was dark as thunder.
Beside him, Giyu Tomioka turned calmly and said:
"Wind Hashira…
You were headbutted."
Sanemi: "..."