Summoning System: Madara Uchiha at the beginning

(OG AN: The storyline and timeline will differ slightly from the original, so readers, please don't get too caught up in it!)

"I've already explained the Three Bodies Technique to everyone earlier. Now I'll explain the Summoning Technique to you all. The hand signs for the Summoning Technique are..."

Itou Hirofumi watched as Iruka-sensei stood at the podium, enthusiastically explaining the Summoning Technique to the students.

 (Everyone, stop worrying about whether the ninja academy teaches the Summoning Technique! The academy lasts for six years, and the protagonist is about to graduate! Knowledge still needs to be taught! And it's only the knowledge points, not the actual summoning scrolls!)

After all those years, Hirofumi had become quite familiar with this world.

The world of Naruto.

Back then, he was trying to save a girl but somehow, he ended up here...

It was supposed to be a good deed, wasn't it?!

He had a gambling father, a sick mother, a little brother too young to understand, and the girl—so sensible and mature. If he didn't help her, who would?

But with that one act of help, Hirofumi found himself reborn as a baby, and not just in any world, but in the world of Naruto.

At first, he thought his miserable life was about to begin.

Surely, since he had transmigrated, his parents would die tragically, and he'd gain unstoppable powers, suffer endless humiliation and scorn, and finally rise as the dragon king, smirking as he unleashed his full might. Perfect classic troupe.

But reality proved him wrong. His parents were alive and well, and their family was harmonious.

The Itou clan wasn't a great clan in Konoha, but neither were they just ordinary civilians.

The Itou family wasn't particularly large, but his father, Aoyama Itou, was the head of the clan and a genuine Jōnin.

In fact, there were two Jōnin in the entire Itou family. Aside from his father, the clan leader Itou Aoyama, the other was his grandfather, Taiga Itou.

However, Taiga was quite old and had been enjoying his twilight years at home, leaving all the family affairs to Hirofumi's father, the clan leader.

Besides the two Jōnin, there were over a dozen Chūnin in the clan. Though this didn't make them particularly prominent in Konoha, it was still a respectable force.

As the young heir of the Itou clan, Hirofumi was practically born with a silver spoon in his mouth.

Moreover, since both Aoyama Itou and Taiga Itou were the sole heirs of their respective generations, they doted on him and would fulfill any request he had.

The secret achievement of "parents tragically sacrificed for ultimate power" never materialized, and the system remained silent over the years. So, he could only grow up step by step.

The Itou family didn't possess any secret techniques like the Nara, Yamanaka, or Akimichi clans, but Hirofumi had already been exposed to chakra extraction and basic ninjutsu.

Over the years, under the guidance of both his grandfather Taiga Itou and his father Aoyama Itou, Hirofumi gained a reputation as something of a genius.

At a young age, he had already trained chakra, mastered techniques like the Substitution and Transformation Jutsu, and become proficient in using ninja tools.

In his entire class, only Sasuke Uchiha ranked higher than him.

Sasuke, the last surviving Uchiha, was the only one who could overshadow Hirofumi.

To Sasuke, Hirofumi was half a person, while everyone else in the class wasn't even considered human.

As Iruka-sensei explained the Summoning Technique, Hirofumi grew curious.

There was no family summons in the Itou clan, so he had once thought about whether he should find a fierce beast that had trained chakra to be his summoning creature in the future. Strength was secondary; being cool was a lifelong pursuit. His summoning creature definitely had to be the wildest, flashiest, and most badass.

Hirofumi already knew how the story in the ninja world unfolded.

It didn't matter if he didn't have any special advantages; he just needed to lie low and wait for Naruto to save the world.

During his time at the ninja academy, Hirofumi had gotten along well with Naruto Uzumaki, Sasuke Uchiha, and the other future powerhouses of Konoha.

Being part of a small clan made it easy to integrate into this core circle.

What was more interesting was that Yamanaka Ino seemed to have taken a liking to him.

In the original story, Yamanaka Ino should have been all over Sasuke Uchiha, but over the years, that hadn't happened. Instead, her eyes lit up whenever she saw Hirofumi.

And he could understand that. After all, his appearance was almost comparable to that of their dear readers! Not only was he physically fit, but he also gave off a vibe similar to the rebellious coolness of the Uchiha.

Perhaps the reason why Sasuke considered Hirofumi "rival" was because of his looks. After all, he was officially recognized as the most handsome guy in their grade. Even Sasuke Uchiha could only be second to him.

As Iruka-sensei continued his passionate explanation on the podium, Hirofumi decided to try out the hand signs for the Summoning Technique.

First, this one, then this one, and finally...

Boom!!!

A puff of white smoke appeared in the classroom, and Hirofumi's seat was suddenly empty!

This bizarre scene instantly caught everyone's attention.

Iruka was dumbfounded!

Where did his student go?! How could he just disappear all of a sudden?!

The students in the class were also startled by the sudden vanishing act!

Sasuke Uchiha discreetly pulled out a kunai, cautiously eyeing the surroundings.

Chōji Akimichi was so shocked by the scene that he dropped his bag of chips on the floor.

"Where's Itou Hirofumi?!" Yamanaka Ino's eyes were wide open. She had just been secretly watching him, so how did he disappear in a flash?

The entire classroom instantly descended into chaos.

Shikamaru Nara scratched his pineapple-shaped hair, frowning slightly.

"This seems like such a drag…"

Naruto Uzumaki, who had been fast asleep, was woken up by the noise in the classroom. He looked around in confusion, a bit of drool still on the corner of his mouth, clearly not fully awake yet.

"What's going on?"

Iruka finally snapped out of it. He had just been explaining the Summoning Technique, and Hirofumi had suddenly vanished. Could it be that Hirofumi had used the Summoning Technique?

After all, there was a similar case before, where one of the Legendary Sannin, Jiraiya, accidentally summoned himself away while messing with the Summoning Technique.

Thinking of this, Iruka swallowed hard. Could his student have stumbled upon such a rare opportunity too?

"Sakura Haruno!"

"Here, Iruka-sensei!" Sakura quickly and anxiously stood up from her seat.

"You help maintain order in the class! Everyone, don't panic; I'm going to find the Hokage!"

Sakura was the most obedient child in the class, and she also excelled in academic subjects. To Iruka, she was like the class president.

"Yes! I got it, sensei!"

With that, Iruka rushed out towards the Hokage's office.