[Fire Release: Fireball Technique – Level Up: LvMAX]
After furiously spamming skill points into his Fireball Technique, Reiji Arata finally saw it—the skill name turned blood red, indicating it had reached MAX level and could no longer be upgraded.
[Ding! Congratulations to the host for upgrading Fire Release: Fireball Technique to LvMAX. You've gained a bonus passive: +10% Fire Ninjutsu Affinity.]
[Fire Ninjutsu Affinity increases allow the host to consume less chakra while unleashing more powerful Fire-Style techniques. The higher the affinity, the greater the amplification of fire-based jutsu.]
Reiji Arata's eyes sparkled.
"Wait—does this mean if I get my Fire Affinity to 100%, even a Lv1 Fire Jutsu would hit like a full-power one? And if I also max out the technique itself, does that mean its power would be amplified even further?"
His thoughts drifted to a certain scene from the Fourth Great Ninja War.
Back then, Uchiha Madara's B-rank Great Fire Annihilation technique was so powerful, it took an entire platoon of Water-Style users to raise a massive Water Formation Wall—just to hold it off.
That image was carved into his thoughts—sharp, vivid, and unforgettable
And now, with this cheat system, he had a chance to recreate that legendary feat… or maybe even surpass it.
And most importantly—
He glanced at the skill point counter.
Still MAX.
It hadn't gone down even a single point.
"Ohhh, this is beautiful," Reiji Arata grinned. "Cheating is fun for a moment—but being permanently overpowered? Now that's pure joy!"
Without hesitation, Reiji Arata turned to the other two ninjutsu from his starter gift pack.
"System, upgrade them too!"
[Ding! Congratulations. Earth Release: Earth Flow Wall upgraded to LvMAX. Affinity with Earth Ninjutsu increased by 10%.]
[Ding! Transformation Jutsu: Seduction Technique upgraded to LvMAX. Transformation Affinity increased by 50%.]
[Higher Earth Affinity allows for stronger and more chakra-efficient Earth-style ninjutsu.]
[Higher Transformation Affinity allows longer, more stable, and highly realistic transformation states.]
Then came a chime:
[Opening system status panel...]
[Host: Reiji Arata]
[Age: 12]
[Known Chakra Natures: Fire, Earth]
[Taijutsu: None]
[Ninjutsu Mastered: Fire Release – Fireball Technique (LvMAX); Earth Release – Earth Flow Wall (LvMAX); Transformation – Seduction Technique (LvMAX)]
[Genjutsu: None]
[Kekkei Genkai: None]
[Special Physique: None]
[Chakra Amount: \~550–600 units (\~0.05x Kakashi Hatake)]
[Skill Points: MAX]
Reiji Arata sighed as he stared at the numbers.
"Top-tier jutsu and chakra reserves that could barely light a match. Bravo!"
He chuckled. "That's just enough chakra to spit out a fireball the size of a rice cooker and raise a mud wall that doesn't have a dog's face on it."
Just as he was about to go outside and test his new powers, the door suddenly swung open.
"Reiji! You're finally awake! HA! You look hilarious in my boxers!"
Standing in the doorway was a boy with golden hair, sky-blue eyes, and a wide grin stained with leftover ramen broth.
Three distinct whisker-like markings on each cheek confirmed it—Uzumaki Naruto himself.
Reiji Arata blinked. He followed Naruto's gaze downward.
Sure enough, he was wearing only a pair of tight, red boxer briefs that clearly weren't his size. The fabric clung awkwardly to him, leaving little to the imagination.
"…Wait. Naruto? The Naruto?"
"And why am I wearing these pants? Where are my clothes? Why do I not remember anything? Did we know each other already?" Reiji rattled off in confusion.
Naruto placed the takeout box of miso pork ramen on the table, then casually pressed a hand to Reiji's forehead.
"No fever... but what do you mean 'don't remember'? Bro, we're super close. I mean—we literally shared underwear! I washed your clothes for you too. And what do you mean 'what happened'? You seriously forgot?"
Naruto scratched his head, then grinned mischievously.
"You said you were gonna create 'the greatest Transformation Jutsu in ninja history' this morning. You were so hyped, you climbed to the roof of the women's bathhouse to 'gather research.'"
Reiji Arata's face froze.
"Someone behind you lost their footing and bumped you—you fell straight into the women's bath. Sakura-chan was in there too."
Reiji winced.
"Yeah… you got flattened. She sent you flying before you passed out. Luckily, I was nearby and carried you out!"
"…Wait," Reiji narrowed his eyes. "If I was there for research, what were you doing inside the women's bathhouse, Naruto?"
Naruto froze. "A-ahem! That's not important! What is important is…" His eyes sparkled. "Did you really invent the ultimate Transformation Jutsu?! I wanna learn it!"
[Ding! New guidance mission unlocked – Teach Naruto the Seduction Technique.]
[Reward: Uzumaki Physique (Lv1)]
"W-what? I'm the one who taught Naruto the Sexy Jutsu?" Reiji Arata was stunned.
(Yeah, more like you died trying to create it—and now it lives on as a ridiculous but heartfelt memento meant for you. Try not to cry.)
But what really shocked him was the reward: the legendary Uzumaki Physique.
That meant an extended lifespan, massive chakra reserves, and near-immortality in endurance.
His currently pitiful chakra pool—0.05 Kakashi's worth—might finally get a serious upgrade.
He cleared his throat, stood tall, and looked Naruto dead in the eye.
"Of course! I am the founder of the greatest Transformation Jutsu in history. It's called… the Sexy Technique."
Naruto's eyes lit up. "Seriously?! Awesome! C'mon, Reiji! Show me! Show me!"
Reiji Arata's expression twitched.
He closed his eyes, channeled his chakra, and shouted:
"Sexy Jutsu!"
Poof!
White smoke puffed—and then cleared to reveal…
A breathtaking woman in a suggestive pose, wearing see-through stockings and a sultry smile.
"Fufufu~ Isn't this what you're into, Naruto-kun?"
THUD.
Naruto collapsed backward, nose gushing blood.
"Th-that's amazing! That's insane! Teach me! I need this jutsu in my life!"
Reiji quickly released the transformation with a cough and retrieved something from his interdimensional scroll.
It was a glossy magazine titled: Top 100 Models – Special Gravure Issue.
He handed it to Naruto solemnly.
"My young pupil," Reiji said, patting his shoulder, ""your appreciation for art proves you're a true man of culture. Take this... it will be your foundation. Study it carefully, imitate what you see, and one day—you might surpass even me."
Naruto eagerly flipped open the magazine, eyes sparkling.
"Whoa—this sister's so pretty! And this one's huge! And this one's…! Wow!"
And so began the legendary legacy of the Sexy Jutsu… and Reiji Arata's first step toward rewriting the world of Naruto.