Night blanketed the Kensei Estate.
The abandoned compound stood in complete silence.
Moonlight filtered through the broken windows of the old dojo, casting long shadows across the polished wooden floor.
Ryuu remained seated in the center of the hall.
His legs were crossed.
His wooden sword rested across his lap.
Hours had passed since he entered the dojo.
Yet he had not moved.
His breathing was slow.
Steady.
Every lesson from the notebook replayed within his mind.
"Master one swing."
"The sword has no shortcuts."
"The heart before the sword."
"The blade tests the swordsman."
At first, they had seemed like ordinary teachings.
Now...
He realized they were guiding him toward something.
Something far greater than swordsmanship.
...
Deep beneath the dojo...
An ancient chamber that had remained sealed for decades trembled.
Dust fell from the ceiling.
Stone cracked.
A massive circular gate stood in the center of the chamber.
Countless black chains wrapped tightly around its surface.
Each chain was engraved with seals that had not weakened despite the passage of time.
Then—
Crack!
One chain shattered.
Its fragments dissolved into countless particles of blue light.
A faint pulse echoed through the chamber.
Thump.
Another chain loosened.
Then another.
One by one...
The seals began responding.
Not breaking by force.
But opening willingly.
As if acknowledging someone.
...
Back inside the dojo...
Ryuu slowly opened his eyes.
"..."
Something felt...
Different.
The world hadn't changed.
Yet it somehow seemed clearer.
He could hear the wind brushing against the leaves outside.
The creaking of the old wooden beams.
Even the soft flickering of the candles before the ancestral shrine.
His senses had sharpened.
Not dramatically.
Only slightly.
Enough for him to notice.
He frowned.
"What is this feeling...?"
Without thinking...
He stood.
His hand naturally reached toward the wooden practice sword.
The instant his fingers wrapped around its handle—
A warmth spread through his body.
It wasn't chakra.
It wasn't heat.
It felt...
Alive.
The wooden sword suddenly became incredibly light.
Almost weightless.
As though it wished to move.
Ryuu instinctively took a stance.
Then...
He swung.
Swish.
The movement was identical to the thousands he had practiced before.
Yet...
It wasn't the same.
His breathing.
His balance.
The timing of his step.
Everything aligned perfectly.
For the first time...
His body and sword moved as one.
The sensation lasted only an instant.
Then disappeared.
Ryuu lowered the sword, staring at his own hands.
"...What was that?"
His heart pounded.
Not from fear.
But excitement.
Years of relentless practice...
Had finally produced a change.
...
Outside the dojo...
His mother abruptly stopped walking.
She had been returning home from the village.
Now...
She stood frozen.
Her eyes widened.
"This presence..."
She looked toward the dojo.
Her breathing became unsteady.
"It can't be..."
She rushed toward the building.
Sliding the door open—
She saw Ryuu standing silently in the center of the hall.
Nothing appeared unusual.
Yet...
She felt it.
A faint aura surrounded him.
Invisible to ordinary people.
But unmistakable to someone of Kensei blood.
Tears instantly welled in her eyes.
"...Sword Heart."
Her whisper trembled.
"It awakened..."
Ryuu turned in confusion.
"Mother?"
She slowly approached him.
Her hands gently rested upon his shoulders.
"Ryuu..."
"Tell me."
"What were you doing?"
He thought for a moment.
"I was practicing."
She shook her head.
"Before that."
"I was remembering the notebook."
"And?"
"I realized..."
"The sword isn't something to control."
"It's something to understand."
Silence.
Her tears finally fell.
She smiled through them.
"You've done it."
Ryuu blinked.
"...Done what?"
She laughed softly.
"For generations..."
"Our clan searched for children worthy of inheriting the Sword Heart."
"Many possessed talent."
"Many possessed strength."
"But only a few ever awakened it."
She gently placed a hand over Ryuu's chest.
"Because the Sword Heart..."
"...cannot be inherited through blood alone."
"It awakens only when one's heart and sword become one."
Ryuu instinctively looked down at his chest.
He couldn't see anything.
He couldn't feel anything extraordinary.
Yet...
That mysterious warmth still lingered.
"What exactly..."
"...is the Sword Heart?"
His mother took a deep breath.
"It is the soul of every Kensei."
"It is our clan's greatest inheritance."
"It grants no techniques."
"No overwhelming power."
"No instant strength."
"It simply allows the sword to recognize its wielder."
She smiled.
"And today..."
"The sword recognized you."
Ryuu remained silent.
He had expected some incredible bloodline.
Something flashy.
Instead...
The Sword Heart was...
Recognition.
Acceptance.
A bond.
Somehow...
That felt far more meaningful.
...
Deep beneath the dojo...
The final outer chain shattered.
Boom!
The ancient stone gate slowly trembled.
A brilliant blue light escaped through the countless cracks spreading across its surface.
Within the chamber...
A heartbeat echoed once more.
This time...
It was powerful.
Ancient.
Majestic.
As though something that had slept for generations had finally awakened.
At that exact same moment—
Ryuu suddenly froze.
A sharp pain spread across his forehead.
He staggered backward.
His mother immediately caught him.
"Ryuu!"
The pain vanished almost instantly.
Before he could speak—
A cold mechanical voice echoed within his mind.
[Condition Fulfilled.]
Ryuu's eyes widened.
The voice continued.
[Unique Bloodline Detected...]
[Sword Heart — Confirmed.]
[Synchronization Complete.]
A brilliant blue light flashed before his eyes.
Letters unlike anything he had ever seen assembled in midair.
Floating silently before him.
∞ INFINITE EVOLUTION SYSTEM ∞
Host: Ryuu Kensei
Status: Initializing...
Progress: 1%...
Ryuu stared at the translucent screen.
His heartbeat quickened.
"So..."
"It finally begins."
The blue screen flickered once.
Then everything disappeared.
Leaving only a single line floating within the darkness of his mind.
«Welcome, Host.»
End of Chapter 10