From that day onward, every morning—before the first rays of sunlight even fully touched the deck of the Virtue—Robin had already begun her routine.
Broom and cloth in hand, she diligently cleaned the ship as if nothing could ever disrupt her schedule.
After a short rest, she would immediately change into training clothes and step onto the open deck, beginning another day of grueling training.
Whether it was foundational physical conditioning
or meticulous control of her Hana Hana no Mi abilities,
Robin completed every task with unwavering seriousness.
Sweat slid down her cheeks, soaking her clothes, but not once did she slow down or complain.
Her talent soon became obvious.
Perhaps because she was born a genius, Robin's ability to learn far surpassed that of ordinary people.
Whenever Shiro—or any crew member—taught her theoretical concepts or shared battle-tested techniques, she grasped the essence almost instantly.
Before long, she was even creating her own small variations and adjustments.
For example: when learning how to control her Devil Fruit more precisely through breath adjustment, she not only mastered the basics quickly, but also discovered ways to alter her breathing rhythm depending on the environment.
Even seasoned members of the Virtue Pirates—who had seen countless monsters on the seas—couldn't help being shocked.
For a girl so young to learn so fast…
Even their veterans couldn't match her.
Within just over a month, Robin's body had visibly transformed under the constant training.
Her once-fragile frame grew firmer, the lines of muscle on her arms and legs becoming clear.
And as her body strengthened, so too did her mastery over the Hana Hana no Mi.
Where she once could only produce a few dozen hands for simple tasks, now she could effortlessly manifest hundreds.
Some hands organized supplies across the deck, others formed complex seals and gestures in the air—working together flawlessly.
Watching this stunning sight, Shiro stood silently at the side, eyes narrowing in thought.
Then a bold idea flashed through his mind:
If Robin trained swordsmanship using her Devil Fruit… her ability to control countless arms at once could create techniques beyond imagination. Techniques that have never existed before.
The thought was irresistible.
Shiro immediately sought a swordsmanship instructor for her.
After careful consideration, his eyes landed on—
Hachi.
As the only member of the crew who had mastered the Six-Sword Style, capable of wielding multiple blades at once, Hachi's experience was exactly what Robin needed.
Shiro shared his idea with him.
Hachi was instantly excited by the concept and agreed without hesitation.
But reality proved far harsher than either expected.
When Robin first attempted to grasp a sword using the conjured hands from her Devil Fruit, she struggled immensely.
Though flexible, the hands lacked the stable, fine force control of real arms.
A sword would slip from her conjured fingers and clatter onto the deck—
Once.
Twice.
Ten times.
Dozens.
Sweat gathered across Robin's forehead, and her palms reddened from repeatedly gripping the hilt.
But she never once showed frustration.
She picked the swords up each time, adjusting the force, adjusting her focus… over and over.
Gradually, she found the rhythm she needed.
The conjured hands held the swords longer.
Then they could swing them slightly.
Soon she could control several at once.
Then ten.
Twenty.
Fifty.
And finally—
Hundreds.
One day, as Robin stood surrounded by a forest of floating swords—each held perfectly steady by a conjured hand—Shiro's eyes lit with satisfaction.
He stepped forward and revealed the technique he had dreamed of since his previous life:
"Ten Thousand Blades Return to One."
A move born from martial tales: countless blades controlled simultaneously, unleashing sword energy so overwhelming it could turn the tide of battle in an instant.
Shiro had always wanted to master it himself, but no human body could control that many swords at once.
But Robin could.
Her Devil Fruit solved the impossible.
Under Shiro's guidance, she began an even more rigorous phase of training.
He demanded she control each blade precisely enough to release a tiny, uniform burst of sword aura.
Hundreds of identical bursts—each matching in strength and angle—then had to converge, merging into a single, massive, devastating blade of sword energy.
It required impossible precision.
It demanded immense concentration.
The difficulty was beyond imagination.
But Robin's resolve was iron.
Even when dizziness overwhelmed her from too much focus…
Even when her arms ached from constant use of her powers…
She rested only briefly, then returned to training again and again, refining the technique one fraction at a time.
Days became weeks.
Weeks became months.
Half a year later, under a clear sky and gentle sea breeze, Robin stood at the bow of the Virtue.
Today was the day she would attempt the technique for real.
She took a deep breath.
Then—
Her hands formed a swift seal.
She whispered the command for her Devil Fruit.
Instantly, hundreds of pale arms bloomed into existence around her, each gripping a razor-sharp sword.
Under Robin's focused will, all blades lifted at once.
Hundreds of threads of sword aura burst from the tips simultaneously—
thin, sharp, and deadly.
The auras spiraled together, merging, growing—
Forming a colossal pink blade of sword energy.
Robin exhaled softly.
"Hah!!"
With a commanding cry, the massive sword sliced downward toward the sea.
The world split.
The tranquil ocean was carved open, a massive trench cleaving the water in two.
Waves roared aside, exposing the sandy seabed far below.
And everything caught in the path—fish, shrimp, anything alive—was pulverized into fine powder, drifting up like pale dust over the surface.
The sea itself trembled before her power.
Robin had done it.
She had unleashed—
Ten Thousand Blades Return to One.
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