[Are you sure you want to create the Lightning Release technique, Thunder Pool?]
Sasuke suddenly heard the system's voice.
He was slightly stunned. This was the first time the system had actively asked him if he was sure about creating a new technique.
What was going on here?
Did the system think creating a new technique wasn't impressive?
Thunder Pool was a technique developed by combining the power of the Cursed Seal. As long as it remained activated, Sasuke could continuously draw on the power of lightning.
Was such a technique not powerful?
[Friendly reminder: This technique can be improved. The preparation time is too long, and the overall evaluation is "A mediocre technique!"]
What?
The preparation time is too long?
Sasuke didn't feel it; maybe he was just too immersed in developing the technique.
He didn't feel that the time was too long at all.
He just felt that using Thunder Pool wouldn't be a quick process.
He deactivated Thunder Pool and tried using it again.
Sure enough!
The preparation time was indeed too long.
He hadn't noticed before, but once he figured it out, he realized that simply standing still for the technique took more than ten minutes.
It was a heavy preparation time, and he couldn't move during that time.
It was exactly as the system had evaluated—like a mediocre technique.
'I need to shorten the preparation time. Ten whole minutes? No enemy is going to foolishly wait ten minutes for me.'
In a battle, timing was crucial, and in ten minutes, he could take out countless enemies.
Sasuke closed his eyes, hoping to improve the technique.
But his current level couldn't manage it.
Perhaps going to Orochimaru's place and combining Orochimaru's knowledge of the Cursed Seal could help improve it.
But even with improvement, there was no guarantee the technique would be completed any faster.
After all, the power of the technique was inherent, and completing it quickly was impossible.
Still, no matter what, the preparation time couldn't remain this long. If the preparation could take only a few minutes and still allow him to move, that would work!
'Wait, I can add hand seals!'
By incorporating hand seals, he might be able to improve it.
First, Sasuke shouldn't have any problems with movement.
Next, he needed to shorten the preparation time.
If he added hand seals, the technique would require at least hundreds of them.
Hand seals were simply a process for guiding chakra flow.
The sequence of the hand seals determined how the chakra would flow.
Ninjas needed hand seals to release jutsu because ordinary ninjas couldn't remember the chakra flow patterns for every technique.
In such a case, hand seals were necessary.
Now, Sasuke could reverse-engineer the sequence of hand seals based on the technique, which wasn't too difficult.
However, just the hand seals alone would require hundreds of them.
Also, after completing the hand seals, Sasuke would need to maintain the hand seal positions, and the last one would require a substantial amount of chakra to condense.
So, the preparation would still take around three minutes.
It also depended on whether Sasuke was in battle mode. If chakra was being used elsewhere, the process would be even slower.
The best solution in this case would be to summon a familiar beast. While Sasuke performed the hand seals, the summoned beast could guard him.
That way, the time could be stretched, similar to what Jiraiya did.
However, Sasuke didn't have any summoned beasts, so that plan wouldn't work.
"Even though I don't have a summoned beast, I can perform hand seals with one hand, and use the other hand for fighting."
"But I need to avoid using too much chakra, or it will affect the formation speed of Thunder Pool."
This meant he would need to practice his physical skills.
While using Thunder Pool, he would have to rely on physical techniques with one hand to defend against the enemy's attacks.
"If I activate the Cursed Seal form, it should shorten the preparation time for Thunder Pool!"
But maintaining the Cursed Seal form, fighting, and continuing to gather the energy for Thunder Pool would be extremely difficult.
However, Sasuke believed he could handle it.
[Congratulations, host, you have successfully developed a new ninjutsu!]
[Lightning Release—Endless Thunder Pool (Beginner)]
The new technique had been developed successfully.
With this technique as a foundation, Sasuke could try developing other lightning-based jutsus in the future, among other techniques.
Developing a technique wasn't something that could be done easily.
By the time Sasuke had fully perfected the technique, an entire night had passed.
The process of selecting the sequence of hand seals alone took Sasuke a long time.
After a busy night, Sasuke felt a bit fatigued.
She returned to Konoha and went home to rest.
However, when Sasuke returned home, he unexpectedly noticed a shadowy figure sneaking around, watching his house.
After a closer look, Sasuke immediately understood.
It wasn't an Anbu from Konoha; it was Haku!
'She came to find me so soon; it seems there must be news from the Hokage Building!' Sasuke thought.
Sasuke silently made a gesture toward the Anbu disguised figure.
Soon, the two met in a park in Konoha.
"How's it going?" Sasuke asked, smiling at Haku.
"You must have some good news for me, right?"
Looking at Sasuke, who still had a hint of fatigue on his face, Haku felt a strange sense of sympathy but didn't notice it.
He immediately began speaking. "The defense at the Hokage Building is extremely tight. Normally, more than thirty Anbu ninjas guard the building!"
"Even when the Hokage leaves the building, about twenty Anbu stay behind to guard it."
"And I've found the location of the Sealing Book you're looking for!"
"But getting there won't be easy."
The true guardian of the Sealing Book was the Hokage himself.
However, the Hokage didn't carry it around, and the Sealing Book was located in a special room behind the Hokage's office.
A room dedicated to storing confidential documents.
The Sealing Book was stored there.
To enter, one would have to pass through the Hokage's office, which meant it was nearly impossible to sneak past dozens of Anbu guards, enter the Hokage Building, and then reach the room without being detected by the Hokage.
After hearing this, Haku looked at Sasuke. "The Sealing Book is practically impossible to steal!"
"Really?" Sasuke smiled. "I think it's very possible."
The Hokage was indeed tough to deal with, but if the Hokage wasn't there, then it was a different story.
A few dozen Anbu were nothing compared to the Hokage.