Naruto: I start with one door, and I can open it infinitely.

"You've asked the wrong person about the first question," Lin Chuan waved his finger. He wasn't an Uchiha, and he didn't even know the abilities or names of the eye techniques. How would he know how to use this Mangekyou Sharingan? However, he still suggested, "The Mangekyou Sharingan that you can activate, someone in your family's ancestors must have activated it as well..."

"You can look for the corresponding legends in your family history. As long as there is a legend that matches the description of the eye technique, then the name and ability of this kaleidoscope are roughly the kaleidoscope eye technique in this legend."

"Legends will likely record how to use this eye technique, or you can figure it out yourself. However, I suggest that while you're exploring how to use the eye technique, you first learn the genjutsu used by the Uchiha with the Sharingan..."

He planned to outmaneuver Orochimaru, but he didn't know if Orochimaru could withstand the genjutsu used by the other Mangekyou Sharingan users. However, Sasuke's combat experience was too immature, and he probably couldn't outmaneuver this old schemer Orochimaru.

That's none of his business. That's all he can do to help Sasuke. Consider it compensation for using the other party. Anyway, the other party won't know he's being used.

"Secondly, I'm also troubled by the problem of insufficient chakra. Apart from making my body grow as fast as possible, I don't have any other way. Perhaps you could try to find a solution from people or objects with a large amount of chakra..."

"Third, I can't beat you, so there's no need to fight," Lin Chuan said helplessly, waving his hand. If it were Sasuke with three tomoe, he could still bully Sasuke because Sasuke wasn't familiar with the Sharingan, but now that he couldn't beat Sasuke, he naturally couldn't make a move.

"Can't beat him? Not necessarily," Sasuke sighed helplessly. Lin Chuan was too mysterious. Even if the other party said he couldn't beat him, he didn't dare to be careless. After all, he had never defeated Lin Chuan.

"You've awakened the Mangekyou Sharingan. I must remind you not to reveal that this eye is a Mangekyou Sharingan, and you also must not reveal the Mangekyou Sharingan's eye techniques," Lin Chuan knew that Sasuke had awakened the Mangekyou Sharingan too early, and he had to remind him, in case Danzo took notice of him.

"You mean the higher-ups?" Sasuke could only think of the Konoha higher-ups. At his age, he was unaware of the shady dealings between Itachi Uchiha and the Konoha higher-ups.

"Yes, they are very afraid of your eye..."

The Konoha leadership has been wary of the Sharingan for a long time, targeting the Uchiha clan since the time of the Second Hokage. It's a policy passed down from Tobirama Senju, but Sarutobi and Danzo Shimura took it to an extreme, ultimately leading to the annihilation of the Uchiha clan.

"Do you know something? The annihilation of the Uchiha clan shouldn't be that simple," Sasuke had sensed something was wrong after so many years of thinking, but no one would ever tell him the answer.

But whatever the outcome, it is an indisputable fact that Itachi killed the Uchiha clan, and his determination to kill Itachi will never change.

"We were classmates, and we were only in our second year back then. What do you think I could possibly know?" Lin Chuan smiled. He would never tell Sasuke about the deal between the Konoha higher-ups and Itachi. If Sasuke were to question Sarutobi Old Man, his time-travel journey would come to an end.

"That's true," Sasuke thought for a moment. They were only seven years old then, and Lin Chuan disappeared that semester. Naruto said that Lin Chuan went to participate in some kind of training, but he didn't believe it at all. When he asked Lin Chuan later, he still didn't say anything. He knew that the place was a secret of Konoha, and that place should be related to the Uchiha clan's extermination.

"By the way, what I'm telling you is only between you and me. Don't tell a third person, or we'll all die..."

"Don't worry, I won't tell," Sasuke said. Now that he was twelve, he was much more mature than when he was seven, so naturally he wouldn't reveal the Uchiha's secret.

"Alright, go find out your own questions. That's all I know. You're the Uchiha, I'm just an outsider," Lin Chuan put down the fishbone, gently waved his hand, left the fire, and walked into the darkness. He reminded Sasuke, "Remember to put out the fire..."

"Uchiha?" Sasuke put down the fishbone, stood up, and kicked up a pile of rubble that fell onto the fire, completely extinguishing it. He then headed to Konoha's archives, eager to investigate the history of the Uchiha and everything about them.

He had learned his lesson. He first went to the Hokage's office, showed off his Sharingan, and told Hiruzen Sarutobi that he wanted to find out the genjutsu and ninjutsu used by the Uchiha clan with their Sharingan.

Faced with Sasuke, who had already awakened his Sharingan but still only had three tomoe, Hiruzen Sarutobi did not stop him. Instead, he gave Sasuke permission to become Hokage and allowed the Anbu to take him there.

When Sasuke arrived at the archives and began searching for the history of the Uchiha clan, he finally found the Uchiha Lightning Secret Record, which contained the biography of an Uchiha clan member who possessed lightning-style chakra.

He saw the name of the kaleidoscope eye technique for the first time: Takemikazuchi, derived from the myth of Takemikazuchi. In mythology, Takemikazuchi is a thunder god who controls lightning, as well as a god of war and military, and also in charge of swords and bows.

Only then did he realize why his eye technique could amplify lightning release. Under the stimulation of lightning release, it could also comprehensively amplify all bodily functions. He felt that with the comprehensive amplification of his eye technique, he could now go toe-to-toe with Kakashi.

He felt that he needed to develop his skills in close combat and swordsmanship to maximize the power of this kaleidoscope and become stronger until he killed that man.

Next, following Lin Chuan's suggestion, he found many Uchiha clan genjutsu scrolls, including this Thunder Secret Manual, and planned to take them all with him.

After that, he searched for ways to increase his chakra levels, but he couldn't find any. He always felt that Lin Chuan knew something but was unwilling to tell him. He decided to ask him next time.

"Oh right," Sasuke suddenly flipped to the biographies of historical figures and saw many powerful ninjas from history. The biographies described the legendary battles of the First and Second Hokage the most, and mentioned that all of them possessed enormous amounts of chakra, comparable to that of tailed beasts.

"Tailed Beasts? Another novel thing." Sasuke had never found a way to increase his chakra by transplanting Hashirama's cells, because there were no such things here at all.

Unfortunately, a lack of education is a problem. Six years at the Ninja Academy didn't teach that much knowledge, let alone human anatomy. It was considered taboo in Konoha.

After finding the information he wanted, Sasuke left the archives. The archives only made a copy for their records, while Sasuke took the original.

At the same time, Hiruzen Sarutobi also learned what Sasuke was looking for. Just as Sasuke had said, Sasuke had read some family history and taken away some family ninjutsu and genjutsu, so Hiruzen Sarutobi was relieved.

Now that Sasuke has awakened his Sharingan, Kakashi should pay more attention to him and teach him how to use it, hoping that Sasuke can grow up quickly. That's all he can do for Itachi.

As long as Sasuke doesn't touch those forbidden techniques, everything is fine. But if Sasuke does touch those forbidden techniques, then don't blame him for disregarding Itachi's instructions and personally taking action to clean up the mess.

……

Eight months later...

shhhhh--

"Finally learned the Leaf-style sword technique, Willow," Lin Chuan said, flashing his sword at Pig Brother. Seeing Pig Brother lose his balance, he quickly swung his sword through a wooden stake, instantly cleaving it in two. Only then did he stop, panting heavily.

After nine months of study, he finally mastered the Konoha-ryu swordsmanship, Liu. It was truly a difficult learning process.

Now that he has learned the Leaf-style swordsmanship Liu, he will record this swordsmanship and put it after the proficiency of the swordsmanship Tsukikage. He has basically learned all the ninjutsu and swordsmanship that he could learn during this transmigration.

[S-rank Konoha-style swordsmanship, Liu, 1 times]

Looking at his record book of his achievements during this time travel, he couldn't help but smile. This time travel had made up for all the shortcomings of his previous time travels.

As long as the ninja he transmigrates to later isn't too bad in talent, even a genin-level talent would allow him to rise quickly and have a certain level of self-protection within three years. By the age of ten, he would be able to rival a genin in strength, which would be enough for him to plot and seize control of White Zetsu's body.

There are two prerequisites for possessing a White Zetsu: finding the White Zetsu and learning the Reanimation Jutsu. You can find the method in your next time travel.

He also learned that Sasuke's Mangekyou Sharingan was named Takemikazuchi, and that it was related to a god called Takemikazuchi. He went to the Konoha Village library, found relevant information, and learned the secret of this eye technique that amplifies the body.

It has to be said that this eye technique is really suitable for Sasuke, because Sasuke's Susanoo in the later battle with Naruto was like the descent of the Thunder God. This eye technique is too suitable for Sasuke. If Sasuke could control the lightning in advance and had enough chakra, he could completely use Susanoo to contain the lightning.

Unfortunately, Sasuke only has one Mangekyou Sharingan. In Sasuke's words, he can sense the Mangekyou Sharingan in his other eye, but he just can't open it. He can't do anything about it; he probably needs a stronger stimulus.

When Sasuke asked to awaken his Sharingan again, Lin Chuan refused outright. With the Mangekyou Sharingan, Sasuke no longer needed hand seals to use Lightning Release; he could summon Lightning Blade simply by activating the Sharingan. A rope couldn't hold Sasuke back, so he told Sasuke to figure it out himself.

It's unclear whether Sasuke tried, but all he knows is that Sasuke still only has one Mangekyou Sharingan, and he still can't unlock the other one.

Even after Naruto and Sasuke went through the Land of Waves arc, they still didn't awaken the other Mangekyou Sharingan. Perhaps the pressure from the enemies wasn't enough. He had asked about the Land of Waves mission, and it wasn't much different from the anime. It was still about facing Zabuza and Haku. With Naruto and Sasuke's current strength, they could easily handle it solo. With Kakashi added, they controlled Haku, and Zabuza surrendered. The only difference from the anime was that Zabuza and Haku didn't die; they simply abandoned the mission.

Back in the Mangekyou Sharingan, he silently noted down Sasuke's Mangekyou Sharingan name. He needed to research further in reality to verify whether the legends in reality and the Naruto world were consistent before deciding what type of eye technique he would unlock in the future.

As is well known, the types of eye techniques in the Mangekyou Sharingan are divided into genjutsu enhancement, ninjutsu attack enhancement, space-time enhancement, etc.

This shows that the eye technique he most desires is still the space-time type and the Mangekyou Sharingan that amplifies ninjutsu. As for why he didn't choose the genjutsu amplification type?

Genjutsu-type Kaleidoscopes are great for crushing weak opponents, but once they level up to fight against gods, genjutsu becomes useless. For example, why didn't Madara Uchiha use genjutsu on Hashirama? This shows that genjutsu is not very effective against Kage-level powerhouses. Even Naruto and his friends can dodge Infinite Tsukuyomi, which is said to be the strongest world-destroying genjutsu.

As long as his strength surpasses that of his enemy's eye power, he can break through his opponent's illusions at any time. Even if he acquires non-illusion eye techniques in the future, he will not be afraid of his enemy's illusions because of his stronger eye power.

He knew how to prevent the loss of pupil power: transplanting Hashirama cells, so that he wouldn't go blind.

If the enemy keeps using illusions, such as powerful illusions like Tsukuyomi, they will need to constantly deplete their eye power. He can simply use his own eye power to resist, since his eye power can be replenished anyway.

Moreover, before facing dangerous individuals like Itachi, he would definitely make thorough preparations and wouldn't blindly confront them.

The most important thing right now is to participate in the Chunin Exams and have some fun first. I imagine the other ninjas from other villages who are also participating in the Chunin Exams have arrived in Konoha. It's time to go and meet these cuties.

While Lin Chuan was excited about learning the sword technique Liu and awakening his Mangekyou Sharingan, Konoha Village was holding a Jonin meeting, which was attended by Jonin who had students. Shirakumo Hayato was among them.

"Are there any Jonin you would recommend for this Chunin Exams?" Hiruzen Sarutobi looked at all the Jonin leading their teams. Kakashi, Asuma, Guy, and others had already recommended their students to participate in the Chunin Exams.

"Lord Hokage, I recommend that Lin Chuan participate in the Chunin Exams alone." Bai Yun had originally planned to have Lin Chuan carry out a few missions with him this morning, so that he could accumulate enough mission experience before promoting Lin Chuan to Chunin.

Lin Chuan had been studying swordsmanship for the past six months and had no time to carry out missions. With the Chunin Exams approaching, he had no choice but to let Lin Chuan take the Chunin Exams route to become a Chunin.

"Alone," the other Jonin looked at Kakashi upon hearing this. Kakashi had also become a Chunin all by himself back then. Could it be that Hakumo Hayate's disciple was a genius?

"Tsk, this is really a headache," Kakashi had no doubt about Lin Chuan's strength. He was now worried about his own team and hoped that Naruto and Sasuke wouldn't beat the enemy too badly.

Sakura Haruno is still a genin through and through, only she has become more resilient than when she first graduated. Naruto and Sasuke's strength is indeed somewhat excessive.

Naruto's strength has reached the level of a Special Jonin due to his massive chakra reserves, while Sasuke's strength has increased significantly after awakening the Sharingan and even the Mangekyou Sharingan, making him someone even Naruto himself has to take seriously.

So, how did he know that Sasuke had awakened the Mangekyou Sharingan?

It was during a fight with Sasuke that Sasuke got desperate and realized he couldn't beat him, so he revealed his Mangekyou Sharingan. What a child who doesn't know how to hide things! How could he let others know that he had activated his Mangekyou Sharingan!

Fortunately, after Sasuke awakened the Mangekyou Sharingan, he focused all his attention on Sasuke, leaving Naruto's special training to Yamato, and finding a medical ninja to train Sakura as well, so that Sakura could at least play a role in the team.

For the next few months, he helped Sasuke with special training, making Sasuke familiar with his Mangekyou Sharingan, the eye technique that could fully amplify lightning release and taijutsu when the Mangekyou Sharingan was activated. Even he needed to activate his Sharingan to keep up with Sasuke's speed.

If Sasuke were to use this eye technique in conjunction with Lightning Release Chakra Mode, the effect would be unimaginable, utterly terrifying. Unfortunately, Konoha doesn't have a training method for Lightning Release Chakra Mode; that's a secret technique of Kumogakure.

Kakashi had no idea how he could lose to a genin team that included a Jonin, a Special Jonin, and a Genin medical ninja.

As Baiyun suggested earlier that Lin Chuan participate in the Chunin Exams alone, several Jonin team leaders recommended their own teams to participate. Even if they didn't pass, they could still gain some experience and participate in the Chunin Exams again next year.