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

"That hurts, you brat," Kankuro said, looking at the three Konohamaru who had bumped into him. His face, covered in purple eyeshadow, was terrifying. He then looked at the noisy trio, grabbed Konohamaru by the collar, and lifted him into the air.

"Kankuro, stop! Be careful or you'll get beaten up," Temari kindly reminded them from the side. They had just arrived in Konoha and shouldn't cause trouble.

"I'm sorry, he didn't mean it, we were just playing around," Sakura quickly apologized, hoping Kankuro from Sunagakure would release Konohamaru, but in her heart she was thinking, "Who are these people? They look so scary."

"Hey, let go of them, or I'll get rough," Naruto said, showing no fear of Kankuro and Temari. He was now a genin with Jonin-level strength, a fact even Kakashi-sensei acknowledged.

"Tsk, so this is the genin of Konoha, just another idiot," Kankuro thought to himself, completely ignoring the loud and boisterous Naruto and not taking him seriously at all.

"I'll play with you guys for a bit before the annoying ones arrive," Kankuro thought, as he was no less than a genin, which was why he didn't take Naruto and his group seriously.

"Multiple Shadow Clone Technique!" Naruto raised his hands, bringing his index and middle fingers together to form a cross. With a series of loud bangs, hundreds of Naruto shadow clones instantly appeared, surrounding Temari and Kankuro. He then coldly said, "You can still let go now, or I might start hitting you..."

"What?!" Kankuro stared in shock at the sight of Naruto standing on both sides of the alley and the walls, exclaiming in disbelief, "How is this possible? A ninjutsu that a genin could use?"

whoosh-

Suddenly, a pebble hit Kankuro's arm. In pain, Kankuro could only throw away Konohamaru and turn to look at the tree by the alley wall, where a pretentious man who threw pebbles was standing.

"What are you doing in someone else's village? Are all outside ninjas good at is bullying children?" Sasuke's lips curled up, and he gave Kankuro a disdainful sneer.

"Ha, another infuriating brat," Kankuro said, clutching his wrist and glaring at Sasuke.

"Get out of here, you're not welcome here," Sasuke clenched his fist suddenly, crushing the stone in an instant, and stared disdainfully at the two outsiders below. He now truly had the confidence to look down on the genin.

"Wow, Sasuke is so handsome!" Sakura Haruno once again revealed her simp nature, cheering for Sasuke's dashing entrance.

"Naruto is so lame," Konohamaru pointed at Naruto and complained. Even he could tell that Naruto didn't know how to show off.

"Damn Sasuke, I will definitely surpass you!" Naruto clenched his fists, gritting his teeth in anger. He never expected that after Sasuke activated his Sharingan, he would be unable to defeat Sasuke. He had to work even harder.

"Hey, get down here, brat," Kankuro said tauntingly to Sasuke in the tree after quickly bandaging his wound, while reaching for the puppet on his back. "I hate brats like you who only know how to talk big..."

Suddenly, a cold voice rang out, startling Kankuro and Temari so much that they broke out in a cold sweat. "Kankuro, stop! You're disgracing the village..."

"Gaara," Kankuro chuckled awkwardly, not expecting Gaara to arrive so suddenly. He dared not provoke this nemesis.

"A troublesome guy has arrived," Sasuke said, having already activated his three-tomoe Sharingan. He turned to look at Gaara, who was hanging upside down in the tree. He realized that his Sharingan couldn't see through Gaara, so he had to take him seriously.

"You're just a disgrace to the village, what do you think is the reason we came all the way to Konoha...?"

"Listen to me, Gaara, these guys started this trouble first," Kankuro quickly defended himself, saying that he wasn't the one causing trouble, and that he just wanted Konohamaru, who bumped into him, to apologize.

"Shut up," Gaara didn't bother listening to Kankuro's explanation. He stared coldly at Kankuro, ready to kill him if Kankuro dared to utter another word of nonsense.

"I know, I know, I'm sorry, I'm really sorry," Kankuro said immediately after hearing Gaara whisper "I'll kill you," without offering any further explanation.

"I'm sorry, it was my oversight," Gaara turned to look at Sasuke, staring directly into Sasuke's Sharingan without any fear.

However, Shukaku, the One-Tailed Beast sealed inside Gaara, immediately showed a look of disgust upon seeing Sasuke's Sharingan. "Sharingan, what an annoying eye..."

"The Nine-Tails should be in this village. Let me sense it," Shukaku said, sensing the Nine-Tails' presence with just a slight effort. It was actually inside the body of the blond brat not far away. Shukaku couldn't help but laugh: "Hahaha, looks like even the stinky fox isn't eating or sleeping well..."

"You stinky raccoon, what makes you so arrogant with just one tail?" Kurama naturally sensed Shukaku's arrival, but both of them were sealed away and could do nothing but talk back from afar.

Just as the two tailed beasts were exchanging insults, Lin Chuan arrived silently. He had no reason to miss this spectacle.

"So, you can apologize too," Lin Chuan's voice suddenly appeared, startling everyone again.

Don't let his calm and collected exterior fool you; he's secretly ecstatic. After nine years of arduous training, he's been itching to pull off something big, and it's really exhilarating.

How can Sasuke enjoy this all by himself? Besides, Sasuke is getting a bit cocky now. Is this the confidence that comes with strength? This brat thinks he's all that again!

"What?" Gaara had just apologized when he heard Lin Chuan's voice. He looked down and saw that Lin Chuan was standing on the branch above him.

"This guy," Sasuke closed his Sharingan and chuckled helplessly. He had seen enough of this guy's arrogance over the past few years. He wasn't even a clan ninja, yet he acted even more arrogantly than him, an Uchiha.

"It's Lin Chuan!" Naruto was excited when he saw Lin Chuan appear. In his memory, Lin Chuan had always been the strongest among the three of them.

"Who are you?" Gaara's expression changed for the first time. Compared to Sasuke Uchiha, he was more interested in Lin Chuan who had suddenly appeared.

"Didn't you see my headband?" Lin Chuan smiled faintly, looking at Gaara's dark circles, and uttered a shocking statement: "You haven't slept in a long time..."

"You?" Gaara's heart trembled violently. He hadn't expected to be seen through so easily. Had the other party already discovered the village's plan? Should he kill the other party?

No, that won't do. He gave up after a moment's thought. If Lin Chuan could come to his side silently, he could also kill him silently. He wasn't confident he could assassinate Lin Chuan here, especially with a not-so-weak Uchiha by his side.

"Oh no, how did he know that Gaara rarely sleeps?" Temari and Kankuro were both shocked. If Gaara's secrets were exposed, their village's plans would be ruined, and they had to report this.

"What? Can't you see those huge dark circles under your eyes?" Lin Chuan chuckled. Seeing how tense the three of them were, it seemed they were afraid he would guess something, such as the Konoha Crush Plan.

This isn't a plan you can just make up anytime soon, so he reminded the three of them, "Can't you even see those obvious dark circles under your eyes? How do they get along with Gaara?"

Hearing Lin Chuan say that it was because of his dark circles, Temari and the other woman both breathed a sigh of relief. Gaara also breathed a barely perceptible sigh of relief, as he was genuinely afraid of ruining the village's plans.

"Everyone, disperse. The Chunin Exams are in a few days, and fighting is not allowed in the village," Lin Chuan waved his hand gently, dismissing everyone and clarifying the purpose of these outsiders' visit.

"What Chunin Exams?" Sasuke asked, intrigued, as he watched the three from Sunagakure depart.

"It's the exam for genin to chunin. Kakashi probably registered you guys. You should find out soon," Lin Chuan said, waving his hand as he landed in the alley under the tree, before leaving.

Meanwhile, Gaara and his two companions from Sunagakure, having been repeatedly challenged by Konoha genin, frowned deeply, wondering if the Konoha genin's strength was somewhat excessive in this Chunin Exam.

No one will give them an answer. Naruto and Sasuke's strength is beyond the norm, all because of Lin Chuan's influence. At the same time, there are two other people whose strength far exceeds that of their peers, namely Shikamaru and Choji, but these two did not fight as hard as Naruto and Sasuke.

……

July 1st, the day the Chunin Selection Exams began.

"Cough cough cough, cough cough cough..."

Lin Chuan woke up coughing up blood again. Looking at himself in the mirror, his face was pale and his lips were white. These were symptoms of continuous blood loss. He really didn't have much time left. Fortunately, the Chunin Exams were only a few days away. He could endure it a little longer.

Then, as usual, he went to the bathroom to wash the blood off his hands. After having breakfast at home, he got ready to go to the Ninja Academy. Konoha placed the first written exam in their old school classroom.

But as soon as he arrived at the Ninja Academy, he saw Sasuke and his two companions facing off against Rock Lee. This was a famous battle and one of Sasuke's few defeats.

"Hey you with the fierce look in your eyes, wait a minute," Lee called out to Sasuke, who was about to leave, and challenged him to a duel: "I want to settle this with you now..."

"You mean now? To settle this here?" Sasuke looked at Rock Lee with disdain. He found it quite amusing to hear that Rock Lee was a ninja who couldn't use ninjutsu.

"Yes, my name is Rock Lee. When asking someone's name, you should state your own first," Lee said, pointing at Sasuke. He had heard since childhood that the Uchiha clan were all geniuses, and today he was going to challenge a genius. "Uchiha Sasuke..."

"Didn't you already know?" Sasuke chuckled dismissively. What was wrong with this guy? Not only was his clothing strange, but even the way he spoke was odd.

"I want to duel with you, to fight the genius of the Uchiha clan. I want to prove that hard work can also defeat genius," Rock Lee said, assuming a fighting stance, ready to go all out to challenge Sasuke.

"Interesting, I'll have a go at you," Sasuke said with a smirk. Since awakening his Mangekyou Sharingan, he hadn't fought anyone except Kakashi. Even Lin Chuan had invited him several times but had refused. He had tacitly accepted that Lin Chuan was no match for him now, otherwise why wouldn't Lin Chuan dare to make a move?

"Sasuke, there are still thirty minutes left before registration closes," Sakura Haruno said, glancing at the clock after hearing that the two were going to duel. Realizing that registration was almost over, she had to remind Sasuke.

"Don't worry, the battle will be over in five minutes," Sasuke said confidently. After reassuring Sakura, he charged towards Lee.

Just as Sasuke was about to make contact with Rock Lee, Rock Lee leaped up and swung his whip kick, shouting, "Konoha Whirlwind..."

boom--

Just as a fist and a whip kick were about to collide, Lin Chuan instantly appeared in front of them with a Body Flicker Technique, blocking their attacks. He grabbed Sasuke's fist with one hand and Lee's whip kick with the other—a truly hard and heavy whip kick.

"Listen to me, you two. The Chunin Exams are just around the corner. Now is not the time to fight. I know your strength. We won't be able to decide the winner without using our last trump cards..."

"Chuan? How did you know?" Xiao Li looked at Lin Chuan in surprise. He often trained with Lin Chuan when he was in school and always knew that Lin Chuan was very strong. Over the years, Lin Chuan has only become stronger.

Moreover, Lin Chuan was his good friend, so he naturally had to give Lin Chuan face and put down the whip kick that was carrying a load.

"Lin Chuan, why are you stopping me?" Sasuke was a little annoyed. He admitted that Lin Chuan was his friend, but Lin Chuan shouldn't have interfered with his battle. He was eager to fight right now.

"Don't worry, after you pass the written test, you can do whatever you want in the second exam," Lin Chuan said with a smile, but in his heart he was thinking that with Sasuke's current strength, which is on par with Kakashi, Lee might not be able to beat Sasuke.

However, Sasuke is a joke against Orochimaru, who has Kage-level strength, even with the Mangekyou Sharingan, because he doesn't have enough chakra.

"And once you reveal your hand, and everyone else knows, how will you proceed with the rest of the exam..."

"Is he really that strong?" Sasuke let go of his hand with some doubt. This was the second time he had heard Lin Chuan mention his trump card. It seemed that this funny guy with thick eyebrows was not as simple as he thought.

"Let's go. The Chunin Exams are just around the corner. Let's talk outside," Lin Chuan said after a brief farewell to Lee, seeing that the two had stopped fighting, and immediately headed out of the school building.

Sasuke immediately caught up and continued to press Lin Chuan for details about what he had discovered, asking, "Did you discover something?"

"Lin Chuan, it has to be you who can stop their battle," Naruto said, looking at Lin Chuan. He hadn't seen Lin Chuan for half a year and didn't know how strong Lin Chuan had become.

"Sasuke, Lee is a taijutsu genius. His legs carry hundreds of kilograms of weight. You should understand now, right?" Lin Chuan clenched his trembling hands. He couldn't have taken that whip kick without using chakra.

"What? Over a hundred kilograms?" Sasuke had never carried such a heavy load before. He never expected that the guy with the thick eyebrows would fight with such a heavy load.

"He also practices a taijutsu technique that allows him to unleash power several times greater than his normal strength, reaching the level of a Jonin. That's why I stopped you from fighting. We're all ninjas from the same village; let's not fight to the death..."