The Genjutsu Devil of Konoha

Seijuro began practicing Fuinjutsu like his life depended on it. For the next few days, he sent a clone to the school—not his real self, but a clone with about 75% of his chakra. So basically, 75% of his power. Unless something crazy happened, he would be fine.

He looked at the book and began to study it even more.

He looked at the Sealing technique:

Scroll Technique: Jutsu Encapsulation Seal (Jutsu Kakusei Fūin, 術覚醒封印)

Function: Capture a single Ninjutsu or Genjutsu technique at the moment of its release and store it inside a prepared scroll for later use.

Trigger: Touch activation with chakra signature identical to the original user.

Limitation: One-time use. Overflows if chakra is too potent.

Warning: Unstable seals risk releasing the jutsu prematurely.

Once he read the skills—alongside all of its descriptions (trust him, there were a lot of descriptions)—he created 6 clones, before taking a chakra pill and munching on it.

He had access to about 10 of them right now—more like 60—virtue of the clan leader handing them over to him.

Anything to facilitate his growth, really. Also yes, 6 shadow clones were enough to drain him. He couldn't really perform any jutsu after that.

It was that draining on his small reserves.

Well, he would have all 6 clones do something.

Each clone bowed slightly and, without a word, scattered to preassigned stations. This was no mere chakra control exercise—this was Seijuro hunting for the sweet spot. The exact point where ink, chakra, motion, and time intersected like gears in a celestial mechanism.

📜 The Experiment Begins

Clone One drew the base matrix of the seal—meticulously inking out the spiral formation with inner containment loops.

Clone Two performed target jutsu: a small Fire Release stream, aimed at a practice dummy.

Clone Three attempted to trigger the seal at the moment of release, to store the flame.

Clone Four modified the ink's chakra infusion ratios, tweaking for reactivity.

Clone Five tested various scroll materials—rice paper, silk, even chakra-treated bark.

Clone Six simply observed. Documenting, calculating... analyzing failures with silent scrutiny.

💥 Failure No. 1: Ink Overload

The scroll caught fire, shrieking like a startled fox. The clone responsible gave a deadpan nod and vanished.

"Too much reactive chakra. Must reduce ink volatility."

💥 Failure No. 2: Delay in Trigger

The fire jutsu hit the dummy while the scroll gently hissed. Too late.

"Milliseconds matter. Chakra sync must occur before release crest."

💥 Failure No. 3: Overpressure

The scroll shook, humming violently before exploding in a puff of black smoke.

"Too much pressure."

Well, all that mattered was that he was learning. He spent like 4 weeks on this—so a month. Multiply that by 6 shadow clones, and he spent 6 months on Fuinjutsu practice. And he said 6 months because he made each of his shadow clones practice something different, to get rid of the repetition.

Hm. Anyway, currently he was sorting through his memories at the academy.

Apparently, a new girl had joined. Her name was Kushina Uzumaki.

POV Change

Seijuro's clone sat at his usual spot. Nawaki, behind him, was still salty about his loss. Oh well. He was scribbling down some notes on his paper—some light stuff really, trying out a new drawing style maybe.

Then, the classroom door opened to reveal a girl with red hair. She had blue eyes and such. Her red hair did make her look like a tomato. From what he could gather, she wasn't from Konoha. That red hair told him she was an Uzumaki.

Hm.

"Who's the new girl?"

"Why is her hair so red?"

"She looks like a tomato."

"She looks funny."

Hm, kids being kids. None of his business really. Nothing he should have to worry about.

"Please introduce yourself and your dream," the instructor would say politely.

She looked nervous but would ignore that feeling in her chest.

"My name is Kushina Uzumaki and it's to become Hokage, dattebane!" Hm, that seemed to be a verbal tic. And even though she looked to be quite determined in her role, Seijuro (clone) didn't believe it at all.

She looked lonely, and since she was an Uzumaki—and the Uzumaki clan had just gotten squad-wiped a few weeks, month-ish ago...

She was a refugee. She had no friends here. This was a new place. So being in such a spot, she must want people to somewhat not see her in such light. She wanted to be adored and loved, and what better position for that than becoming the Hokage of Konoha, where she can get all the appreciation and love that she deserves?

Hm, since she was here—as much as Konoha's Hokage seemed kind—if someone like that evil-ass dude he could feel had such a high-ranking position... her role here was important.

Something very important.

Something like... becoming the Jinchuriki of the Nine-Tails.

"As if you could be the Hokage!"

"Hahaha!"

Some kids were pointing and laughing at her. As a kid attempted to grab her hair, Seijuro cleared his throat.

"Is this how we treat a new student? Where are your manners?" Seijuro said calmly, looking the student dead in the eyes.

You know... having the strongest in your class look at you like that was quite scary.

"S-sorry..."

The kids began apologizing to her. Seijuro said nothing more, gave the girl a welcoming smile, then added:

"Welcome to Konoha. If anyone bothers you, don't be afraid to ask."

Hm.

Good.

Now, back to doodling. He kind of turned off all noise in his mind, his eyes focused on his notes.