Inside the Sound Hashira's training grounds, the sky-filling dust and flames finally settled slowly.
Tengen Uzui stood bare-chested, sweat mixing with dirt to trace wild patterns across his bronze skin.
He fiddled with a uniquely shaped, exquisitely complex transformation device in his hands.
The object was a luxurious gold and elegant white, inlaid with dazzling gemstones. Every line brimmed with a flamboyant design, as if it were a divine artifact born for some grand festival.
This was left behind by the mysterious man who called himself "Lord Kaguya."
Uzui stroked the cold, smooth grooves on the driver, feeling the rhythm within it—a rhythm that seemed to make heaven and earth cheer.
He smiled.
It was a heartfelt sense of validation.
He had always pursued the ultimate flashiness, whether in battle or in life.
And the object before him was the answer he had sought his entire life.
"Hahaha!"
He raised the driver high and laughed wildly, the sound waves vibrating the air until it hummed.
"This is what you call a masterpiece of the gods!"
"This is what you call the ultimate flashiness!"
He pulled out an equally flashy card from his clothes and slammed it into the driver without hesitation!
"Henshin!"
A blindingly radiant, seven-colored light shot into the sky, dyeing the entire training ground in a dreamlike hue.
Countless golden light particles and cherry blossom petals appeared out of thin air, swirling rapidly around his body.
A gorgeously complex sound effect, like a solemn festival melody played by the gods themselves, echoed through the clouds.
A golden armor that exuded a futuristic sci-fi aesthetic while perfectly blending with classical festival art rapidly covered his entire body amidst the light and shadows.
On the chest of the armor was a festival totem formed by countless gemstones.
Above the visor, golden compound eyes gleamed with divine radiance.
At this moment, he was no longer the Sound Hashira of the Demon Slayer Corps.
He was the God of Flashiness!
...
Beneath a secluded waterfall, the sound of the rushing water grew even and gentle.
Giyuu Tomioka stood there quietly. As the water flowed past his ankles, it seemed to come alive, actively swirling around his body.
He appeared to have completely merged with the waterfall, the surrounding rocks, and the forest, no longer distinct from them.
He had grasped the true essence of flowing water.
The white-haired, white-bearded martial arts grandmaster, Bang, stood not far away, nodding in gratification.
His weather-beaten eyes revealed undisguised approval.
The time to leave had come.
The old man didn't say much; he simply took out a martial arts manual from his robes and handed it over.
On the cover of the manual, three large characters were written in wild, uninhibited brushstrokes—God Slayer Fist.
"This is the essence of my strongest disciple, your senior brother Garou's lifelong martial arts."
Bang's steady and powerful voice echoed in the silent valley.
"He integrated hundreds of martial arts styles, ultimately surpassing me to create this fist technique."
"How much you can comprehend will depend on your own fortune."
With those words, the martial arts grandmaster turned and vanished into the mountain forest.
Giyuu Tomioka stood alone, tightly gripping the manual in his hands.
'Senior brother... God Slayer Fist?'
A brand-new path leading to a higher realm slowly unfolded before him.
...
On the other side, the special training tailored for the geniuses also reached its final conclusion.
The Mist Hashira, Muichiro Tokito, sat quietly. He was merely watching the leaves fall in the courtyard, yet his clear eyes reflected the very essence of the world.
Any technique, any flow of power, held no secrets in his eyes.
He only needed a single glance to instantly learn it, and even optimize it to a perfect state that surpassed its creator.
Those eyes were infinitely close to the legendary "Migeika Eyes."
In the Wind Hashira Sanemi Shinazugawa's training grounds, fierce winds howled.
The Nichirin Sword in his hand was wrapped in a visible, cyan vortex of magic.
The "Wind Magic Core" gifted to him by Homura Akemi had completely fused with him.
Anger was no longer his shackle, but the fuel for his power.
He could transform his Nichirin Sword into a magical weapon to judge demons, and at the most critical moments, he could even... transform into a Magical Boy.
Even though the transformation process made him feel so ashamed he wanted to kill someone.
Inside the Butterfly Mansion, Shinobu Kocho was observing an experimental plant.
She extended a finger, and a drop of deep purple liquid fell.
The plant did not wither; instead, in a manner that defied the laws of life, it bloomed into a crystal-clear cherry blossom.
Now, her "poison" was no longer just for killing.
It had become domination, rewriting—the art of life.
...
In the Love Hashira Mitsuri Kanroji's unique training ground.
Kakarot scratched his iconic hair, circling Mitsuri with a curious gaze.
At this moment, Mitsuri was surrounded by an intense aura composed of pink and green.
That aura made him feel both familiar and strange.
"Wow! Your 'ki' is so weird!"
Kakarot's eyes widened, his face full of curiosity.
"I feel like there's some power inside you that hasn't awakened yet. Too bad I don't have any Ultra Divine Water here, and I don't know how to unlock other people's potential!"
He left behind a bag of precious Senzu Beans, gave a few final instructions, and then placed two fingers against his forehead.
With a "swish," the powerful warrior from another world vanished without a trace.
Mitsuri Kanroji stood frozen in place, feeling the power surging out from her surroundings like boiling magma.
Her physique, which already far surpassed ordinary humans, had reached an unimaginable new realm.
She even felt that an even more violent, primal power was lying dormant within her, ready to make its move.
She didn't notice that her signature pink hair was gradually being dyed green.
...
The Stone Hashira Gyomei Himejima's special training was unpretentious and dull.
Every day, he accompanied Saitama, the man who called himself a "hero for fun," doing 100 push-ups, 100 sit-ups, 100 squats, and a 10-kilometer run.
Then they would eat, take walks, and he would listen to the other man talk about trivial things like supermarket sales.
Day after day.
However, it was this ridiculously simple training that allowed his body, which had already been tempered to the human limit, to break through some invisible shackle.
The power within his body was now skyrocketing at a speed he couldn't comprehend.
The only price was that the top of his head had now become even smoother and shinier.
Before leaving, Saitama patted him hard on the shoulder, his expression unusually serious.
"Right now, you've reached the level of a 'C-Class Hero.' You need to keep working hard."
He paused, then added.
"However, your hairstyle is already at the S-Class Hero level."
Gyomei Himejima pressed his palms together, and the strongest man in the Demon Slayer Corps shed tears of emotion once again.
Even though he had no idea what C-Class or S-Class meant.
...
On the final training ground, the transformation of the main cast had also reached its final stage.
Tanjiro Kamado leaped high into the air, his Nichirin Sword burning with golden flames.
But within that scorching heat lay a majesty that ruled over all things, and a gentleness that nourished all life.
Under the "guidance" of Escanor, the Lion's Sin of Pride, he had finally grasped the true meaning of the "Sun."
The sun was the "pride" hanging high in the sky, but also the "compassion" that nurtured life.
He had obtained the brand-new Sun Power of "Compassion and Pride."
On the other side, Zenitsu Agatsuma's figure turned into a streak of golden lightning, flashing wildly across the field.
Dazzling blue Lightning Chakra covered his entire body like armor, emitting crackling explosions.
Not only had he mastered the Lightning Release Chakra Mode, but he was even able to execute the space-time ninjutsu—the Flying Thunder God Technique!
Elsewhere, "Beast Breathing, Secret Art: Thunder Bagua!"
Inosuke Hashibira let out an earth-shattering beastly roar.
His bare upper body and head had transformed into a ferocious wild boar, with menacing horns growing from the top of his head.
What he swung in his hands were no longer his two jagged Nichirin Swords.
Instead, it was an incredibly massive kanabo wrapped in pitch-black Armament Haki!
After swallowing the "Zoan, Mythical Type, God of Mount Ibuki Model" Devil Fruit, he had transformed into a true mythical beast.
The combat power of the Demon Slayer Corps had undergone an earth-shattering, terrifying upheaval in just a single month.
A destined showdown was about to begin.