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

the next morning.

When Lin Chuan arrived at the Ninja Academy, he passed by Sasuke's desk. Sasuke finally stopped giving him a sour look and greeted him instead.

"Good morning, Chuan..."

"What?!" Everyone turned to look at Sasuke in surprise when they heard him greet Lin Chuan. They only started talking after Sasuke blushed.

It was unexpected that the usually aloof Sasuke would greet Lin Chuan; it was truly unprecedented, and everyone was quite surprised, wondering what had happened between the two.

Even the group of girls were curious about how the two of them made up, since Sasuke was usually aloof and unapproachable, especially after the Uchiha clan was wiped out.

"Good morning," Lin Chuan greeted Sasuke, and seeing the curious looks on everyone's faces, he couldn't help but smile to himself. That's more like it, everyone's looking over here, he's the main character.

"Hey, Lin Chuan, why is he greeting you?" Naruto was puzzled. When did Sasuke change his ways and make up with Lin Chuan? Aren't these two enemies?

"Oh, this one," Lin Chuan said with a satisfied smile, seeing all the classmates around him pricking up their ears and crowding around. "He's like you, he asks me to bring him lunch. He's my boss now..."

"Oh dear!" When everyone heard this reason, they all fell to the ground. They never expected that the two made up because of bringing lunch. Was this a joke?

"Oh, oh," Naruto snapped out of his daze and suddenly realized that Sasuke seemed to be alone as well, so it was normal for him to buy lunch with Lin Chuan.

But Shikamaru didn't think so. He felt that something must have happened between the two of them. He asked his father last night, and his father finally told him that Lin Chuan had gone to Root. As for what Root was, Shikamaru's father didn't say, just that he would find out when he grew up.

"Everyone get ready, class is about to start!" Iruka saw that everyone had arrived, but they were all chattering, so he had to shout. Once everyone quieted down, he began to take attendance as usual.

……

The morning classes ended quickly, and Lin Chuan took out three lunchboxes: one for himself, one for Naruto, and one for Sasuke.

Both of these orphans are well-off, so it's okay for him to earn a little. Once he graduates, he'll have 100,000 taels of silver in his account, which is equivalent to one million yen or 50,000 yuan, enough to cover his mortgage for a while.

In addition, by becoming a genin and completing missions, he could earn some mission commissions and bring back at least 100,000 yuan. He could pay off his mortgage first, and then figure out what else to do.

Seeing Sasuke come to collect his lunch, everyone believed Lin Chuan's story, and lunchtime was next.

After lunch, it was time for afternoon PE class, but Lin Chuan skipped class again. He was learning too many ninjutsu techniques and needed at least one or two years to become familiar with them.

However, this time there were more followers, all of whom skipped class with him. Because Sasuke skipped class with Lin Chuan, the others followed Sasuke out, wanting to know what the two of them would do if they skipped class.

Lin Chuan arrived at the training ground, put down his backpack, and began his kunai throwing training for the day.

Sasuke followed, also taking out a kunai to practice throwing. He didn't understand why Lin Chuan, whose kunai throwing was already very good, needed to practice throwing kunai.

When the others saw Lin Chuan and Sasuke training together, Naruto almost cried out. He knew the two were having an affair, but he never expected them to be together like this.

"Keep your voice down, Naruto," Shikamaru covered Naruto's mouth and pulled him back to school, where the three of them began to discuss.

"Shikamaru, why are you stopping me?" Naruto was a little annoyed. Lin Chuan was clearly his friend, so how did he end up hooking up with Sasuke?

"Didn't you see them training over there? You can go train with them if you want," Shikamaru said, too lazy to complain. He hadn't expected that the two of them skipped class to study, not to play. Who would be happy about that?

If the first and second place are both so competitive, what should he do as the third? Should he also be competitive? He doesn't want to; that would be too tiring.

"You're right, I'll go right now," Naruto grabbed his schoolbag and skipped class too. Shikamaru really did wake him up from his dream.

"Tsk, what a hassle," Shikamaru returned to the classroom, looking out the window at his classmates playing and Naruto and his two friends skipping class to train. The more he thought about it, the more annoyed he became. He decided to skip school and go home to train instead.

"Hey, Shikamaru, where are you going? Wait for me!" Choji saw Shikamaru leave, grabbed his snack bag, and chased after him.

Because of Lin Chuan's roll, his close friends also started rolling, and everyone got busy and had a wonderful childhood.

……

At the training ground, after throwing three hundred kunai at the moving target, Lin Chuan sat down to drink water and rest.

At the same time, Sasuke walked over and asked curiously, "How do you train all day? How did you become so strong?"

"Here you go," Lin Chuan said, taking out his notebook, which contained training materials for each period and version, starting from when he was three years old.

From climbing trees and wading through water to learning ninjutsu, he hasn't dared to slack off for the past four years, all to pay off his mortgage. It's really damn hard; it's even more tiring than going to work.

"Why? You're not one of those ninja clans, is it really necessary to go to this extent?" Sasuke was stunned when he saw Lin Chuan's training notes.

Because this training manual was too heavy and too cruel, if it were him in the past, he definitely wouldn't have been able to persevere and would have just pestered his brother to practice kunai.

"You can't beat me," Lin Chuan said without any nonsense. The reason he fought so hard could be summed up in just one sentence.

"You're right," Sasuke said dejectedly, putting down his notebook. At this moment, he finally understood why Lin Chuan was stronger than him.

The other person has been training me relentlessly since they were three years old. It would be strange if they couldn't surpass me.

"Are you a genius?" Sasuke asked Lin Chuan again after returning the notebook.

"Obviously," Lin Chuan readily admitted, "I'm not a genius at all. I just work harder than the average person, and that's how I surpass many ordinary people and become the genius you all talk about. Do you think I'm a genius?"

"Even if you're not a genius, geniuses work so hard, so what reason do I have not to work hard?" Sasuke looked up at the sky, then lay down under the tree, watching the dappled shadows fall on him, as if he had made up his mind.

"At the beginning, I had no famous teachers to guide me, no family secret techniques, and no noble Uchiha bloodline. I only had myself. I wanted to stand out from the crowd, and only by putting in more effort than others could I get what I wanted..."

"Only by putting in more effort than him can I defeat him, be able to take revenge," Sasuke sat up again, a glint in his eyes. He seemed to know what he wanted.

If Itachi is that strong, he must work even harder than him. So he has to work even harder than Itachi to kill Itachi and avenge his family.

"Really?" Lin Chuan, with a blade of grass dangling from his mouth, noticed the increasing sparkle in Sasuke's eyes, indicating he had regained his fighting spirit. He subconsciously chuckled, "For kids our age, sometimes understanding why we're working hard is far more important than the effort itself..."

"Like those two lunatics who always run around Konoha?" Sasuke looked at Lin Chuan, as if seeking confirmation of something.

"That's right. Only when you understand why you're working hard will you be motivated to work your hardest and you'll get good rewards." Lin Chuan knew who Sasuke was talking about. It was none other than Guy and Rock Lee. The two of them hadn't trained together yet, but they would often run laps around the village.

"Hey, how long are you going to keep eavesdropping?"

"Hehe, what are you two talking about about hard work? I don't understand at all," Naruto said, scratching his head as he emerged from the bushes after hearing Lin Chuan's shout. He actually just wanted to play with the two of them, but they were both training fanatics, and he couldn't stand it.

"If you want to follow the training, then come. It's okay if you don't understand." Lin Chuan felt he had rested enough, so he got up and started running again, continuing his afternoon five-kilometer weighted run.

Sasuke glanced at Naruto, then got up and ran with Lin Chuan. He couldn't beat Lin Chuan, so there were many things he could learn from Lin Chuan. Before he had a teacher, training with Lin Chuan was a good option.

"Ugh," Naruto thought, feeling completely lost when he saw the two of them start training again. He didn't know whether to walk or run, but it was too tiring.

But in the end, I decided to run along to avoid looking out of place and just train with them.

Meanwhile, the two teams of ANBU hidden in the bushes officially met, and Captain Kakashi and Captain Tenzo had time to sit down and catch up.

"Captain, that kid is really precocious," Tianzang remarked after overhearing Lin Chuan and the other person's conversation.

"He's a smart kid," Kakashi couldn't help but say. After all, a kid who could go through Root would have died long ago if he wasn't smart.

……

After training in the afternoon, Lin Chuan took the two to the river to fish, intending to invite them to his home for dinner, and naturally wanted to bring some ingredients back with them.

After catching about five pounds of fish and picking some wild mushrooms, he asked his mother to identify whether they were poisonous when they got home. After preparing the ingredients, he took Naruto and the other person home.

"Mother, two friends are coming over tonight, so please cook more food," Lin Chuan said softly as he put down the ingredients for his mother.

"Who is that? From the Uchiha clan? Why do you always bring these people home?" Lin Chuan's mother was almost at her wits' end. Her son was good in every way, but couldn't he make normal friends?

"Mother, hurry up and get ready. Let's go to the backyard for a drink of water first." Lin Chuan turned around and looked at Naruto and Sasuke. He saw the two of them looking at him with envy as he acted coquettishly towards his mother. When they saw him looking at them, they were too embarrassed to look away.

Therefore, having both parents is the highest level of success in the Naruto world. This statement is absolutely correct and I will not accept any rebuttal. Haven't you seen how both of the chosen ones envied him?

"One for each of you. These are chakra papers. You need to test your chakra attribute before learning ninjutsu. Just input your chakra into the chakra paper," Lin Chuan said, handing over two chakra papers. The two of them had been very curious about their chakra attributes while fishing earlier.

"I'll go first," Sasuke said, taking the chakra paper first. After channeling chakra into it, the paper became crumpled and then suddenly burned to ashes, forcing him to frantically shake his hand. He asked in confusion, "What happened?"

"These are two chakra natures. The one that appears first indicates a stronger affinity. Your chakra is more affinityable to the lightning nature and less affinityable to the fire nature," Lin Chuan explained when he saw Sasuke's confusion.

"Mine, mine, look at mine, I want two kinds of chakra too!" Naruto didn't understand any of this. Seeing that Sasuke's chakra had two attributes, he wanted both. As a result, the chakra paper split in the middle and was completely different from Sasuke's.

"This is a reaction from the wind attribute. Your chakra is more compatible with the wind attribute," Lin Chuan explained again, having his own purpose in letting the two of them come into contact with the chakra attribute in advance.

Just thinking about the upcoming Chunin Exams, everyone will be amazed by the strength of these two. Imagine a Jonin leading two Special Jonin and a Genin on a mission – how wonderful! I wonder what the outcome of this Land of Waves arc will be.

"Now that you know your chakra nature, you can learn the corresponding ninjutsu. If you don't have a teacher, you'll have to learn on your own..."

"Did you learn it on your own too?" Naruto asked curiously, putting down the chakra paper. He also wanted to become as strong as Lin Chuan, but he was too playful and lacked self-discipline. He didn't know how Lin Chuan managed to train tirelessly day after day, year after year.

"I didn't have a teacher before, but now I do, and he's a Jonin," Lin Chuan said with a smile, looking at the two of them. He had given them his own identity, and his teacher, Maruboshi Kosuke, was also a Jonin, so there was no need to hide it.

"Jonin?" Sasuke caught the key word. If he wanted to take revenge on Itachi, he would need to find a Jonin teacher. He really didn't know how Lin Chuan found a teacher. He wanted to find one too.

"Jonin? That's amazing! How did you find a teacher? I want a Jonin teacher too!" Naruto sees what others have and wants it too. He doesn't have his own opinions and it's just a passing fancy. He'll probably regret it later.

"Don't you know an old man? Ask him to find you a Jonin teacher. If he doesn't want to, just keep bothering him until he gets annoyed, then he'll find you a teacher..."

Lin Chuan looked at Sasuke. As Itachi's entrusted guardian, how could Sarutobi not care about the Uchiha's orphan? He quickly reminded Sasuke, "Sasuke, go with Naruto and find Naruto's grandfather. That grandfather will also find you a teacher, but you have to be polite, otherwise no one will help you..."

"I understand," Sasuke clenched his fist secretly. As long as he could become stronger, he was willing to be polite; he just hadn't wanted to before.

"Children, dinner is ready, come and eat!" Lin Chuan's mother saw the three of them chatting enthusiastically in the backyard and could only call out loudly for them to eat.

Lin Chuan's father was working overtime and didn't come home tonight. After dinner, Sasuke and Naruto said goodbye and left to find Sarutobi Old Man and ask him to help them find a teacher. Lin Chuan, on the other hand, had to continue his training. Everyone was getting busy.