Because Uchiha Sora's longsword had been shattered by a Tailed Beast Ball in the previous battle, he was currently lacking a suitable weapon.
After asking Zabuza and learning that there was a Ninja tool shop in a small town near the coast of the Land of Water, he took Haku, who had just been brought under his command, and rushed all the way to that town.
The longsword had to be forged from metal capable of conducting Chakra. The shop didn't have any ready-made ones, so it had to be custom-ordered, which would take about a week.
Thus, Uchiha Sora and the other two temporarily settled down in this small town.
Since Haku had been dirty for a while, and the trip to the Land of Water had been quite successful, Uchiha Sora decided to find a place to get some good rest.
In the end, the three decided to go soak in a hot spring.
Arriving at the hot spring inn, the three changed their clothes, and Uchiha Sora grabbed Haku's small hand and headed toward the men's hot spring.
"Um, Lord Sora, I, I think I should go to the women's hot spring instead!" Haku said, blushing slightly and stammering.
Uchiha Sora was stunned: "Women's hot spring? Haku, you are a girl?"
"Yes," Haku said, blinking innocent, large eyes at Uchiha Sora without looking away, seemingly wondering why Lord Sora would ask such a question. Did he not look like a girl?
"Alright then!" Uchiha Sora couldn't help but pat his forehead. He had truly been misled by the original work!
In the original work, Haku had insisted over and over that he was a boy! So Uchiha Sora had never doubted his gender.
Who knew that Haku was actually a girl!
He didn't know if his arrival had caused a butterfly effect in this world, or if Haku had been a girl all along and was just lying in the original work.
Forget it, none of that was important!
"Alright, then you go to the women's hot spring!" Uchiha Sora let go of his small hand and stroked his hair.
"Okay!" Haku nodded obediently.
Meanwhile, Uchiha Sora and Zabuza entered the men's hot spring and began to enjoy the hot spring bath.
"Leader, what are we going to do next?" Zabuza asked in a low voice while soaking in the hot spring.
The matter of the Fourth Mizukage had been successfully resolved. Now that the Fourth Mizukage was free from control, the situation in the Land of Water would slowly improve. Zabuza had already fulfilled his wish.
Therefore, for the rest of his life, he intended to follow Uchiha Sora wholeheartedly.
Hearing Zabuza's question, Uchiha Sora thought about how he was surrounded by enemies everywhere and realized the process of building his own force had to be accelerated.
After thinking for a moment, he said: "Next, we need to find a place to settle down and establish a base. I've chosen the Land of Grass. After we leave here, let's go and conquer the Land of Grass."
Conquer the Land of Grass!
Zabuza was startled and mused: "The Land of Grass has decent relations with all the other nations. If we launch a direct assault, I'm afraid it will provoke the other major Ninja Villages to launch a punitive expedition."
Uchiha Sora shook his head: "The Land of Grass is nothing but a fence-sitter. The reason the various nations let it survive is because it's sandwiched between them, serving as an excellent buffer zone. The nations don't actually care who controls the Land of Grass!"
"Furthermore, they will have to weigh the consequences of offending me!"
Uchiha Sora's tone was filled with immense confidence.
His current comprehensive strength could be considered among the best even among Kage-level Experts. As long as the Kage of the major Ninja Villages weren't stupid, they wouldn't dare to make a move lightly.
Unless they could act in unison.
However, unless it was an absolute last resort, how could those major nations, each acting in their own interests, unite so easily?
This was also the fundamental reason why the Akatsuki Organization, entrenched in Amegakure, was able to continuously develop.
And the location of the Land of Grass happened to be adjacent to the Land of Rain.
Setting up a base in the Land of Grass would also allow for better surveillance of the Akatsuki Organization.
"Leader, what about manpower?" After hearing Uchiha Sora's words, Zabuza asked again.
Uchiha Sora smiled slightly: "Aren't the two of us enough?"
Zabuza's expression stiffened…
A week passed in the blink of an eye.
During this week, Uchiha Sora basically spent all his time teaching Haku.
Haku's talent was very strong; if properly trained, he would absolutely be a very powerful combatant!
Through his contact with Haku, Uchiha Sora also wanted to see if he could trigger the system to see if he could automatically cultivate the Ice Release Bloodline Limit.
However, it was a pity that Haku's current abilities were still very unstable, and no matter how much contact they had, the system still didn't react.
After receiving the custom longsword, Uchiha Sora rewrote the Flying Thunder God formula on it, wore it at his waist, and left the Land of Water with Zabuza and Haku.
The three took a boat across the sea and spent a few days arriving in the Land of Fire first.
Before going to attack the Land of Grass, Uchiha Sora returned to the island in the Mirror Dimension.
The various materials previously obtained from Konoha had almost all been organized.
Uchiha Sora took out the Ninjutsu materials that were useful to him and began to study them.
First were the Forbidden Techniques in the scroll of seals. Sealing Jutsus like the Reaper Death Seal naturally didn't need to be learned, but powerful Taijutsu like the Eight Gates was absolutely not to be missed.
He also had to learn the Spirit Transformation Technique; besides that, the Multiple Shadow Clone Jutsu could not be ignored either.
Unfortunately, there was one technique he had always wanted to learn that was not recorded in it.
That technique was the Yin Seal.
Uchiha Sora hadn't found any relevant information in the other Ninjutsu scrolls either.
It seemed this technique was not simple at all.
The Yin Seal was a technique passed down by the Uzumaki Clan, and currently, it seemed only Senju Tsunade had mastered it.
If he wanted to learn this Ninjutsu, he would have to target Senju Tsunade in the future.
After carefully and repeatedly studying all the techniques he could learn for a while, the system's notification sound arrived immediately.
"Ding! Your Multiple Shadow Clone Jutsu has entered automatic training. Since you have already mastered the Shadow Clone Jutsu, the Multiple Shadow Clone Jutsu finds it too simple and has completed training immediately."
"Ding! Your Eight Gates has entered automatic training. Because your physical foundation is excellent, the automatic training progress has reached the third gate!"
"Ding! Your Spirit Transformation Technique has entered automatic training, progressing slowly..."
Forbidden Techniques involving the soul, like the Spirit Transformation Technique, always had a very slow automatic training speed.
However, just at this moment, the system popped up another notification:
"Ding! Because of the automatic training of the Spirit Transformation Technique, your Impure World Reincarnation Technique suddenly felt a connection, and the automatic training progress is complete!"
The Impure World Reincarnation Technique, which had always been progressing slowly, had actually completed its automatic training at this moment!
Uchiha Sora couldn't help but be overjoyed!
"Great! The Forbidden Technique Impure World Reincarnation is absolutely a bug-like existence! With it, I never have to worry about a lack of manpower again!"
"Hmm, it seems the plan to go to the Land of Grass will have to be postponed. The most important thing to do now is to collect the DNA of several powerful individuals! When the time comes, even if I need to attack the Land of Grass, I won't need to do it myself," Uchiha Sora muttered.
After learning the Impure World Reincarnation Technique, Uchiha Sora naturally wanted to experience the joy of resurrecting the dead.
As for moral pressure?
Hadn't he heard of what a dream-realization master was?
Who could be sure that those dead people didn't want to be resurrected? Even if it was in the form of Impure World Reincarnation!
However, he would not resurrect Shisui for the time being.
On one hand, the Kotoamatsukami Eyes that Shisui had left for him hadn't been used yet, and he was reluctant to use them just to summon Shisui.
On the other hand, it was also because the Impure World Reincarnation he had learned from the scroll of seals was not yet perfect; the sacrifice had a great influence on the strength of the resurrected person.
If the sacrifice's strength was low, the strength the resurrected person could exert was also limited.
Therefore, the more powerful the deceased, the more easily they were restricted by the sacrifice.
For an existence like Shisui, his strength would likely be heavily suppressed by the sacrifice.
Even using a White Zetsu as a sacrifice couldn't make up for this flaw.
To make up for the flaws of the Impure World Reincarnation, he would have to spend time researching it.
Perhaps he could trigger the system's automatic training function again to help perfect it?
It was just that, at the moment, Uchiha Sora didn't have the time or leisure for that.
After mastering these Forbidden Techniques, Uchiha Sora left the Mirror Dimension.
Next, Uchiha Sora and Zabuza began a grave-digging mode across the entire Ninja World.
As a Hidden Mist Anbu, Zabuza knew very clearly the whereabouts of the corpses of the previous Seven Ninja Swordsmen of the Mist.
Uchiha Sora, on the other hand, snuck back to Konoha and searched the Konoha Village cemetery extensively.
He had come to find the remains of the previous Hokage, but unfortunately, he didn't find them; not even the corpse of Konoha's White Fang was there.
All he could find were the corpses of some ordinary Ninja.
Regarding this, Uchiha Sora could roughly guess that Konoha's graves had probably already been dug up by Orochimaru.
There was no other way; he had to go to other places in the Ninja World to look for the graves of strong people from other Villages.
After three months of effort, he actually managed to find three strong individuals from other Villages.
For example, Scorch Release Ninja Pakura of Sunagakure.
Magnet Release Ninja Toroi of Kumogakure.
Explosion Release Ninja Gari of Iwagakure.
The strength of these three was roughly at the level of an Elite Jonin, but they weren't considered particularly powerful experts, so it wasn't difficult to find information on them.
As for those Kage-level Experts from various Villages and the previous Kage, Uchiha Sora couldn't get his hands on them right now.
After all, this required having extremely excellent espionage skills, and one had to have been a spy in every faction to accomplish it.
It required intelligence accumulated over many years of espionage activities.
Even Orochimaru could only find some dead people from Konoha to resurrect; he didn't have the energy to find information on strong individuals from other Villages for the time being.
Only Yakushi Kabuto, who had been a spy in various major factions since he was a child in the original work, had such powerful grave-robbing abilities.
However, although Uchiha Sora had only found the information of three strong individuals, Zabuza had already found the information of three previous members of the Seven Ninja Swordsmen of the Mist.
Blunt Sword user Akebino Jinin.
Long Sword user Kuriarare Kushimaru.
Blast Sword user Munashi Jinpachi.
"Alright, next it's time to go find sacrifices!" After collecting the information on these dead individuals, Uchiha Sora said to Zabuza.
"Yes! Leader!" Zabuza nodded, his face showing a look of anticipation.
He already knew that the leader was going to resurrect these dead people, and Zabuza was also extremely looking forward to such a feat.