Shinzuki Yu was jolted awake by searing pain.
The metallic stench of blood mixed with the acrid smell of scorched earth flooded his senses.
He forced his eyes open.
His blurred vision was met with piles of corpses and shattered battle standards strewn across the battlefield.
Beneath him lay cold, muddy ground soaked in blood.
He couldn’t even tell whose.
A tearing agony exploded through his left shoulder, nearly knocking him unconscious.
A standard-issue Iwagakure kunai had pierced straight through his shoulder blade.
Its icy tip hovered less than three inches from his throat.
Then, like a tidal wave, memories that weren’t his surged into his mind, battering his consciousness.
The world of Naruto.
The Third Great Ninja War.
The Kikyō Pass battlefield.
A Konoha genin named Shinzuki Yu.
Dropped into the world on the brink of death.
“I’ve…
reincarnated?”
His heart churned violently.
Memories of his previous life—an overworked corporate drone who had worked himself to exhaustion—already felt like a distant dream.
His instinct to survive roared from the depths of his soul.
[God-Tier Check-In System activated.
Issuing Beginner’s Gift Pack…]
The emotionless mechanical voice had never sounded so heavenly.
[Perfect Sage Body (Basic) loaded successfully!]
An overwhelming surge of life force erupted from every cell in his body, washing over him in a warm current.
The gruesome wound in his shoulder visibly knitted itself back together.
Flesh squirmed and regenerated as fractured bones clicked back into place.
His limbs, once numb from blood loss, were instantly filled with strength—far greater than before.
Even his chakra swelled like a river bursting through a broken dam.
The Iwa ninja who had ambushed him stared in utter disbelief.
Not only had the boy survived, but he had recovered completely in the blink of an eye.
Shock quickly gave way to savage killing intent.
“You little brat…
you’ve got a stubborn life!”
With a hoarse roar, the Iwa shinobi raised his bloodstained kunai and thrust it straight toward Yu’s head without the slightest hesitation.
At that moment, another notification rang out.
[First Check-In Location Updated: Konoha Memorial Monument (Temporary Battlefield Site).
Complete the check-in to receive a God-Tier Dōjutsu!]
Yu’s gaze immediately locked onto a crude wooden memorial not far away.
Rows of wooden name plaques bearing the names of fallen Konoha shinobi had been driven into the simple monument.
Amid the smoke and flames, it looked especially desolate.
Empowered by the Sage Body’s astonishing reflexes and explosive speed, Yu moved just before the kunai could reach him.
Like a hunting leopard, he launched himself away.
Rolling across the blood-soaked ground, he narrowly but cleanly avoided the fatal strike.
Without sparing his attacker another glance, he sprinted straight toward the temporary memorial.
The instant his hand touched the rough, weathered wood, he silently spoke in his mind.
“Check in.”
[Check-In Successful!
Congratulations!
You have obtained: Eternal Mangekyō Sharingan!]
[Left Eye: Kamui—Space Distortion]
[Right Eye: Tsukuyomi—Ultimate Mental Illusion]
Two torrents of immense dojutsu power flooded into his eyes like red-hot brands.
The unbearable pain lasted only a moment.
When it subsided, the world had changed.
Everything became impossibly clear.
It was as though every disguise had been stripped away from reality itself.
Time seemed to slow, every movement unfolding with perfect clarity.
The Iwa ninja, whose first attack had failed, lunged at him again with a ferocious snarl.
Every twitch of the man’s muscles…
Every shift in his breathing…
Every minute movement…
All of it was reflected flawlessly in Yu’s eyes.
Inside his left eye, the three tomoe spun rapidly before merging into the intricate pinwheel pattern of the Eternal Mangekyō Sharingan.
Kamui.
Invisible space warped around the charging shinobi.
His body froze mid-stride.
The vicious grin on his face instantly vanished, replaced by overwhelming terror and utter confusion.
Crack!
The sickening sound of snapping bone echoed across the battlefield.
His neck twisted at an impossible angle.
Life left his body instantly.
Without even managing a scream, the Iwa ninja collapsed heavily into the mud, sending filthy water splashing into the air.
A second Iwa shinobi—a chūnin who had been moving in to support his comrade—witnessed the entire scene.
The color drained from his face.
He couldn’t comprehend what had happened.
The Konoha genin hadn’t even formed a single hand seal.
Pure terror overwhelmed him.
He hastily began weaving signs, intending to escape with Earth Release—
Then he met a pair of deep, blood-red eyes.
The Eternal Mangekyō pattern bloomed within Yu’s right eye.
Tsukuyomi.
The illusion descended without warning.
“AAAAAAAH!”
The Iwa chūnin let out a bloodcurdling scream, clutching his head as he collapsed to his knees, convulsing violently.
In the instant their eyes met, his consciousness had already endured seventy-two hours of endless torture within Tsukuyomi.
In reality…
Only a single second had passed.
Blood slowly streamed from his eyes, ears, nose, and mouth.
The light faded completely from his eyes.
His body stiffened before toppling backward, dead on the spot.
Yu let out a slow breath.
The smell of smoke still hung thick in the air, but the crushing pressure weighing on his heart eased slightly.
He lowered his head and looked at his hands.
Brand-new.
Power coursed through every inch of his body, while unimaginable dōjutsu rested within his eyes.
“So…
this is power.”
His voice was hoarse from his first taste of overwhelming strength, carrying an almost imperceptible chill.
“Looks like all the resentment from my life as a corporate slave got converted into combat power after crossing into another world.”
A faint, self-mocking smile tugged at the corner of his lips.
His eyes, however, remained as sharp as blades.
He understood one thing perfectly.
In this brutal ninja world, the only way to truly live in peace was to become absolutely invincible.
And now…
He finally possessed the foundation to begin walking that path.