They moved in silence.
Not because there was nothing to say—
But because none of them wanted to hear their own fear spoken aloud.
The Abyss stretched endlessly around them, unchanged and watching. Every wall looked the same. Every path curved where it should not. Every breath felt borrowed.
Yuna's throat still ached where his fingers had touched her.
She kept one hand there unconsciously as they walked.
Kurose noticed.
He noticed everything.
But he said nothing.
Behind them, the darkness remained still.
Too still.
Kanzaki adjusted the replacement lens over her damaged scanner and whispered, almost to herself,
"…He's maintaining distance."
Fushimi glanced back.
"You can track him?"
"Not directly."
Her voice was tight.
"…But something keeps interfering with the readings every few seconds."
A pause.
"…Like a presence entering and leaving range intentionally."
Yuna swallowed.
"He's following us…"
"No," Kurose said.
His voice was flat.
"He's herding us."
Those words made the air colder.
No one argued.
Because deep down—
They already knew.
They walked for another seven minutes before the Abyss changed.
For the first time since entering—
The walls widened.
The narrow stone corridors opened into a massive circular chamber.
The ceiling vanished into darkness above.
The floor below was smooth black stone.
Too smooth.
No cracks.
No debris.
No natural formation.
Kanzaki stopped immediately.
"…This isn't natural."
Fushimi's eyes narrowed.
"…An arena."
Kurose's gaze hardened.
"…No."
He looked around slowly.
"…A test chamber."
Then—
The entrance behind them sealed.
Stone folded inward like flesh stitching shut.
Yuna spun.
"No—!"
Another wall closed to their right.
Then left.
Then ahead.
Every exit vanished.
The chamber sealed completely.
And from somewhere unseen—
A faint sound echoed.
Step.
Step.
Step.
No rush.
No aggression.
Just certainty.
Ryuzen emerged from the dark.
Kurotsuki Ryuzen.
His pale skin reflected the dim ambient glow of the Abyss.
His black veins pulsed beneath the surface like living cracks in marble.
His eyes—
Were calmer now.
Too calm.
He walked into the chamber and stopped.
Twenty meters away.
Watching.
Silent.
Studying.
Yuna's voice trembled.
"…Why is he doing this…?"
Kurose exhaled slowly.
"…Because he wants to see what we do."
No one moved.
Ryuzen tilted his head slightly.
Like a scientist observing insects.
Then—
Gray-black flame ignited in his palm.
Stable.
Perfect.
No flicker.
No instability.
He had mastered it.
Kanzaki's voice dropped.
"…His adaptation is complete…"
Ryuzen raised his hand.
The flame split.
One became two.
Two became four.
Four became twelve.
Floating around him—
Perfect replicas of Takahashi's flames.
No.
Better.
Denser.
Sharper.
More efficient.
Yuna whispered,
"…He improved it again…"
The layered voice escaped his mouth.
Clearer than before.
Still wrong.
Still broken.
But understandable.
"…Survive."
And the flames launched.
"MOVE!"
Kurose roared.
The chamber exploded into motion.
Gray-black fire ripped across the stone floor like missiles.
Each blast shattered the ground on impact.
Yuna rolled aside.
Fushimi blurred forward.
Kanzaki barely erected a barrier in time.
Kurose summoned light-lances instantly—
"Intercept!"
Golden weapons clashed with black flames.
The collision shook the chamber.
But even then—
The black flames won.
They consumed the light.
Refined it.
Adapted.
Kurose's eyes widened.
"He's integrating mid-combat—!"
Ryuzen vanished.
Skipped.
Reality stuttered.
He appeared behind Fushimi.
Too close.
Too fast.
Fushimi twisted—
Barely.
Ryuzen's palm struck his side.
CRACK.
Bone shattered.
Fushimi flew across the chamber.
"FUSHIMI!"
Yuna rushed him—
Wrong move.
Ryuzen turned instantly.
His gaze locked onto her.
And something changed.
He froze.
His hand twitched violently.
His pupils contracted.
The Abyss trembled.
Kanzaki stared.
"…Again—"
Yuna stood frozen.
Looking directly at him.
Not the monster.
Not the predator.
The boy.
The one who once sat quietly by the classroom window.
The one who never asked for help.
The one who smiled only when no one noticed.
Tears welled in her eyes.
"…Ryuzen…"
His body jerked.
Static exploded around him.
The flame in his hand destabilized.
His voice broke apart.
"Ry—"
"—Stop—"
"—Resist—"
He grabbed his own head violently.
The chamber shook.
Walls cracked.
The Abyss screamed.
Kurose shouted,
"NOW! PUSH MEMORY STIMULUS!"
Yuna looked at him.
"What—?"
"He reacts to recognition!"
Kurose barked.
"Use it!"
Ryuzen's scream tore through the chamber.
Not loud—
Wrong.
A sound that made the air glitch.
Yuna stepped forward despite everything.
Her voice shook.
"…Ryuzen…"
His breathing became erratic.
Violent.
"…You remember me…"
No response.
She took another step.
Kurose shouted behind her—
"DON'T GET CLOSER—!"
She ignored him.
"…You gave me your jacket when it rained…"
Ryuzen twitched.
A violent flash crossed his eyes.
Rain.
A rooftop.
A quiet girl shivering alone.
A jacket draped over shoulders.
A soft voice.
"You'll get sick."
His hand trembled.
The Abyss cracked again.
Kanzaki stared in disbelief.
"…Memory restoration is destabilizing his assimilation state…"
Yuna's voice broke.
"…You said helping people quietly mattered more than being noticed…"
Ryuzen staggered.
Another flash.
Classroom.
Sunlight.
A quiet conversation.
A shared smile.
His breathing hitched.
"…Ryu…"
His voice cracked.
His eyes widened.
Like someone drowning and seeing air.
Then—
Pain.
Violent.
Absolute.
He screamed.
And the Abyss erupted.
The floor shattered.
Walls split open.
Entire sections of the chamber collapsed inward.
Black cracks spread in every direction.
Ryuzen fell to one knee, clutching his skull.
His body glitched.
Flesh flickering between human and something else.
The layered voices screamed over each other.
"—ERROR—"
"—STABILITY FAILURE—"
"—MEMORY CORRUPTION—"
Yuna cried out—
"Ryuzen!"
He looked up.
And for the first time—
His eyes were human.
Truly human.
Terrified.
Broken.
Aware.
"…Run…"
Silence.
Everyone froze.
He stared directly at Yuna.
Blood—gray and black—dripped from his nose.
His body trembled violently.
His voice came clearer.
More human than monster.
"…Please…"
The Abyss behind him began to open.
Something vast.
Something deeper.
Watching.
Kanzaki's face went white.
"…Captain…"
Her voice shook.
"…There's another signal…"
Kurose turned.
His expression changed instantly.
"…Impossible…"
The reading climbing on her scanner—
Was larger than Ryuzen's.
Far larger.
Something ancient had awakened.
Because Ryuzen had destabilized the Abyss itself.
Ryuzen's eyes widened in horror.
He looked behind him.
And understood before they did.
His voice came out raw—
Human—
Desperate.
"RUN!!"
The chamber exploded.
The wall behind Ryuzen split open.
A massive black limb emerged.
Bone.
Shadow.
Claws larger than men.
It grabbed him instantly.
Yuna screamed—
"RYUZEN—!"
He fought.
For the first time—
Not against them.
Against it.
Gray-black flames erupted from his body.
The limb burned.
Split.
Regenerated instantly.
Kurose's eyes widened.
"…That thing…"
Kanzaki's voice broke.
"…It's higher-layer Abyssal authority—!"
Another limb burst from the dark.
Then another.
Then another.
Dozens.
The Abyss itself had sent something to reclaim him.
Ryuzen screamed as claws pierced his shoulders.
His body glitched violently.
The monster behind the wall began dragging him inward.
Yuna ran forward—
Kurose grabbed her.
"NO!"
"LET ME GO!"
"You die if you go!"
"HE SAVED US—!"
Another scream tore from Ryuzen.
He looked at her one last time.
His human eyes flickered.
Then—
He forced his hand upward.
Gray-black flame exploded.
The chamber between them collapsed.
Stone erupted.
Walls shattered.
The path sealed.
Cutting them off from him.
His final words echoed through the collapse—
Broken.
Layered.
But human.
"…Live…"
And then—
Silence.
Dust settled slowly.
No one moved.
No one spoke.
Yuna stared at the collapsed stone.
Hands trembling.
Eyes empty.
Kanzaki whispered,
"…He protected us…"
Fushimi coughed blood from the floor.
"…That wasn't a monster…"
Kurose stood frozen.
Unable to deny it anymore.
His voice came low.
Heavy.
"…No…"
A pause.
His jaw tightened.
"…That was Kurotsuki Ryuzen."
Yuna fell to her knees.
Tears hitting the black stone.
"…He remembered…"
No one corrected her.
Because they all saw it.
The truth.
The monster of the Abyss—
Still had a human heart buried inside.
And now—
Something worse had taken him.
Deep below.
Far beneath even their reach.
Darkness consumed all.
Ryuzen's body slammed into black stone.
The claws released him.
He coughed violently.
Gray blood splattering.
He tried to rise—
And froze.
Before him—
A colossal shape opened its eyes.
Ancient.
Monstrous.
Inhuman.
Its voice entered his skull directly.
Not spoken.
Declared.
"Defective Fragment…"
Ryuzen trembled.
"Why do you resist your purpose?"
He looked up.
Humanity still flickering in his broken eyes.
And whispered—
"…Because I remember."
The creature leaned forward.
The Abyss trembled.
"Then I will remove what remains."
Ryuzen slowly stood.
Broken.
Bleeding.
Shaking.
But standing.
Gray-black flame ignited in both hands.
His eyes sharpened.
And for the first time—
He chose to fight not as prey.
Not as a monster.
But as Kurotsuki Ryuzen.
[ END OF CHAPTER 7 ]