System Encountered Unknown Error

Uzumaki Naruto had yet to grasp the situation inside the classroom; seeing Iruka leave in such a rush, he assumed class was over.

"What is everyone doing?! Iruka-sensei has already left, so why aren't we getting rowdy yet, dattebayo!!!"

Uzumaki Naruto leaped onto his desk in a single bound!

Uchiha Sasuke, witnessing this scene, did not lower his guard, his hand still gripping a kunai tightly.

"That idiot!!!"

Haruno Sakura, seeing this, marched toward Uzumaki Naruto in a fit of rage, while Uzumaki Naruto, seeing his beloved Sakura walking toward him, felt his heart swell with immense excitement!

"Sakura!!!"

BANG!!!!!

Haruno Sakura jumped up, extended a fist, and slammed it hard onto Uzumaki Naruto's head!

"Uzumaki Naruto!!! Keep it down! Ito Hirofumi has disappeared!!!"

"Ow~~ Sakura, what was that for?! That hurts so much!!! Wait! What did you say?! Who? Who disappeared?!"

Uzumaki Naruto instantly quieted down, turning his gaze toward Ito Hirofumi's seat.

"Hirofumi has disappeared!!! So keep your mouth shut! Iruka-sensei has already gone to find the Hokage!"

"How could this be! How could he just disappear?! What exactly happened just now?!"

Uzumaki Naruto stared at Ito Hirofumi's empty seat in disbelief.

Ito Hirofumi was one of the few good friends he had.

He had never looked down on him for being a demon fox and was even willing to share food with him; how could he suddenly just vanish into thin air?!

Before long, the Third Hokage, Sarutobi Hiruzen, and Iruka arrived quickly in the classroom.

Sarutobi Hiruzen's expression was grave.

Iruka had just explained the specific details to him, and he already had a theory regarding Ito Hirofumi's sudden disappearance.

"Did any student here see exactly what happened?!"

Yamanaka Ino raised her hand, looking a bit timid...

"Hokage-sama... I saw it... At the time, Iruka-sensei was on the podium explaining the key points of the Summoning Jutsu and the sequence of hand seals, and then I saw Hirofumi start performing the seals, and then—poof—he just disappeared!"

Upon hearing Yamanaka Ino's words, Sarutobi Hiruzen and Iruka exchanged glances and spoke three words in unison... Reverse Summoning!!!

"Iruka..."

"Yes, Hokage-sama?"

"Go notify Jounin Ito Aoyama about this first. After all, he is Ito Hirofumi's father and the head of the Ito Clan! There is no solution for a Reverse Summoning, as we have no idea where the child has been summoned to, nor do we know if he will ever be able to return..."

"I understand, Hokage-sama!"

After Iruka left, Sarutobi Hiruzen pulled out a pipe and began to puff on it. Looking at Ito Hirofumi's seat, he couldn't help but think of his own student.

Jiraiya!

Back then, it was because of a Reverse Summoning that Jiraiya was transported to Mount Myoboku, where, by a stroke of fate, he learned Sage Mode and soared to greatness!

Could it be that this Ito Hirofumi possessed such a fortuitous opportunity as well?!

At this very moment, Ito Hirofumi was completely dumbfounded.

He had merely been practicing the Summoning Jutsu casually, and yet he had ended up in an unknown space!

The surroundings were shrouded in mist; there was no sun, no light, only endless darkness and a faint, chilling sensation...

"What the hell is going on?! Could I have been reverse-summoned?! Is this some kind of holy land?! But there are no toads, no slugs, no snakes—there's nothing here at all!!! How am I supposed to get back?!!!"

[Host detected, system binding successful! Detecting host's location: Konoha! Binding Konoha Undead to host! Binding successful!]

"Wait!!! A system?!!!"

"System, what is going on?!"

"Why did you suddenly bind to me?! And where am I right now?!"

"Also, what do you mean by binding the Konoha Undead to me?!!"

[The host should have been a dead man!

In the original causal timeline, the host was meant to die in the womb, with his soul entering the Underworld of this world!

Therefore, an unknown error occurred when this system detected the host!

It was only by using the system's power to invade the entire Underworld and break through the barrier between the two worlds that we successfully bound to the host!]

Hearing this, Ito Hirofumi was already somewhat stunned. No wonder he didn't exist in the original work; it turned out that he was supposed to have died long ago!

And because of his transmigration, Ito Hirofumi—that is, himself—was able to be born successfully!

So the system meant that he was supposed to be a spirit, which is why the system came directly to the Underworld, but he had survived, and then the system consumed energy to break through the barrier between the two worlds to find him!

"System... then what kind of system are you?!"

[This system was originally the More Children More Blessings System!

But because consuming the Underworld exhausted too much power, it is no longer possible to grant the host more children and more blessings!

However, an unknown change occurred during the process of this system merging with the Underworld!

It can now bind spirits to the host and make them the host's summoning beasts!]

To be honest, Ito Hirofumi quite liked the idea of more children and more blessings, but since the system had encountered an unknown error, there was no way to make that happen anymore.

But what did this binding of spirits mean?

"System, are you saying that I am currently in the Underworld?!!"

[Correct! Just as the host was practicing the Summoning Jutsu, this system directly reverse-summoned the host to the Underworld!

And successfully bound the entire Underworld to the host!]

"That's not right, System. Didn't you just say that I bound the spirits of Konoha? How did it become the entire Underworld again?!"

[Because the host is currently in Konoha and holds the status of a Konoha villager, the host can currently summon the spirits of Konoha!

Only after the host completely controls the Ninja World can the entire Underworld be completely bound to the host!]

"So that's how it is, I understand... Then System, introduce your functions to me!"

[This system was originally the More Children More Blessings System, but it has changed due to an unknown error!

It is now changed to the Summoning System!

The host can use the Summoning Jutsu to summon spirits to become the host's summoning beasts!

White-level summoning can summon ninjas with the strength of a Genin!

Green-level summoning can summon ninjas with the strength of a Chunin!

Blue-level summoning can summon ninjas with the strength of a Jonin!

Purple-level summoning can summon ninjas with the strength of an Elite Jonin!

Gold-level summoning can summon ninjas with the strength of a Hokage!]