The basement was completely silent.
Only the steady mechanical hum of the life-support capsule echoed in the darkness.
Inside the capsule—
Kokichi Muta stared at Yagami Sora.
His eyes searched the young sorcerer's face.
Looking for even the slightest trace of deception.
But there was none.
Sora's expression was calm.
Confident.
Not the reckless confidence of arrogance—
But the certainty of someone who understood exactly what he was capable of.
"You… can really do it?"
Muta's voice trembled.
Hope and fear mixed together.
Like a drowning man clutching his final lifeline.
"We'll find out when we try."
Sora shrugged casually.
"You don't have many options left anyway."
"Trust me…"
"Or wait for those cursed spirits to harvest your soul."
After a long silence—
Muta closed his eyes.
"…Fine."
"If you can truly heal my body…"
"My life belongs to you."
"Deal."
Without hesitation—
Sora opened the life-support capsule.
A stale medicinal smell escaped immediately.
"Try not to scream too loudly."
"If you do…"
"I might throw you out halfway through."
A faint blue light appeared in Sora's palm.
Dense bioelectric energy condensed around his hand.
The moment he touched Muta's skin—
"AAAAAAHHHH—!!"
A scream tore through the basement.
Pain.
Unimaginable pain.
It felt as if every bone in his body was being shattered—
Then rebuilt.
Every nerve forcibly torn apart and rearranged.
The pain struck directly at the brain.
Impossible to block.
Sora's Vector Manipulation began operating at an extreme level.
Inside Muta's body—
He interfered with every microscopic process.
Dead and atrophied cells were removed.
Stem cells were stimulated to divide rapidly.
Each new cell was guided—
Aligned according to the correct human biological structure.
This process required terrifying precision.
The computational load was enormous.
Even greater than fighting a Special Grade cursed spirit.
Without the system's Advanced Computational Assistance Module, Sora would not have attempted it.
Minutes passed.
Then dozens of minutes.
Muta's screams gradually weakened.
Until only rough breathing remained.
But the transformation happening to his body was miraculous.
His pale skin regained color.
Atrophied muscles began to rebuild.
Broken bones reformed.
Even his missing right arm began to regenerate visibly.
It was nothing short of a miracle.
A reconstruction of the human body—
Using pure control over physical laws.
Finally—
Sora withdrew his hand.
Sweat covered his forehead.
"…Damn."
"I'm exhausted."
He looked down at the boy lying in the capsule.
Then nodded.
Satisfied.
"Alright."
"Try standing up."
Muta slowly opened his eyes.
He stared at his hands.
Then his regenerated arm.
His expression froze in disbelief.
He moved his fingers.
They responded instantly.
Strong.
Flexible.
Alive.
He slowly sat up.
His feet touched the cold floor.
The sensation alone nearly made him cry.
"I…"
"…can stand."
With trembling steps—
Muta stood upright.
For the first time in seventeen years.
Sunlight streamed through the basement skylight.
It touched his skin.
Warm.
Not painful.
"…So this…"
"…is what it feels like to be normal."
Tears streamed down his face.
He fell to his knees.
And bowed deeply.
"Thank you."
"Thank you…!"
A notification flashed across Sora's vision.
[System Notice: Bioelectric Reconstruction Complete]
Note:
The treatment succeeded because the target's body still retained partial cellular activity and youth.
Heavenly Restriction alterations become significantly harder to reverse once the subject fully matures.
Estimated success rate for adult cases: below 5%.
Sora glanced at the message.
So this method wouldn't work for everyone.
For example—
Toji Fushiguro.
Or a fully awakened Maki Zenin.
"…Understood."
He dismissed the notification.
"Enough with the formalities."
Sora waved dismissively.
He tossed a set of clothes from his system space.
"Put these on."
"You're embarrassing to look at."
Muta quickly dressed.
The clothes were a Jujutsu High uniform.
With a healthy body—
He looked like a completely different person.
Handsome.
Confident.
Only the faint scars on his skin remained—
Marks left by his Heavenly Restriction.
Sora sat casually on the edge of the capsule.
"Now."
"Let's talk about business."
"When are Mahito and the others arriving?"
Muta took a deep breath.
Forcing himself to calm down.
"Tonight."
"In a reservoir in Nagano Prefecture."
"They plan to 'heal' my body there."
He paused.
"…Then kill me."
"Perfect."
Sora snapped his fingers.
"Then let's prepare a surprise."
"Your weapon."
Sora asked calmly.
"Ultimate Mechamaru."
"Is it ready?"
Muta's eyes lit up.
"Of course."
"That machine contains seventeen years of accumulated cursed energy."
"I built it for this exact moment."
"Good."
Sora stood up.
Looking toward the staircase leading to the surface.
"Then tonight…"
His smile turned slightly dangerous.
"…will become a nightmare."
"For Special Grade cursed spirits."
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