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

Suddenly, he felt a tremor beneath his feet, and a bright light flashed in the direction of the Valley of the End, which was very noticeable under the dark clouds that blotted out the sun. He knew that the battle between Naruto and Sasuke had broken out.

"It's getting cold, put on some clothes," Karin said, unaware of what Lin Chuan was looking at. Seeing him so engrossed, she took a coat and draped it over his shoulders.

"Karin, it's about time, we should go." Lin Chuan touched his clothes, feeling the lingering warmth. They should go and seek refuge with Orochimaru.

Shortly after the battle at the Valley of the End, Orochimaru will abandon the underground base of Otogakure and retreat with Sasuke, leaving Jiraiya, Naruto, and Sakura completely empty-handed when they search for Sasuke.

This is the sequel to Sasuke's defection. He must go to Orochimaru's underground base as soon as possible, lest he be unable to find Orochimaru's whereabouts after Orochimaru's retreat.

"I don't know what you're going to do, I don't know where you're going, but I will support you. Please don't leave me," Karin said as she heard Lin Chuan was about to leave. She quickly grabbed Lin Chuan's arm and held on tightly.

"Don't worry, I won't abandon you. I promise you'll be alright," Lin Chuan said, looking into Karin's red eyes that were about to burst into tears. He gently wiped away Karin's tears and continued to comfort her, "Trust me, you'll be alright. From now on, don't say anything, don't do anything, just follow me. You need to do one thing with me..."

"Okay, I will cooperate with you," Karin nodded emphatically. Seeing how serious Lin Chuan looked, she chose to trust him unconditionally.

"Let's have dinner. This is our last dinner here," Lin Chuan said, pulling Karin into the house. The two ate their last dinner together. Tonight, he didn't reject Karin; instead, he slept with her.

The next morning, the two got ready and headed to the Valley of the End to check the situation. When Lin Chuan arrived there, he saw traces of the destruction of the stone statues in the battle and confirmed that Sasuke had arrived at Orochimaru's Sound Village base.

He and Karin put their Grass Ninja headbands back on, scratched each other a few times, and got covered in mud, looking quite disheveled. Then the two headed towards the Land of Rice Fields.

Orochimaru's underground base is not easy to find, but the villages of Otogakure and the Fuma clan are easy to find. The Fuma clan is a ninja family from the Land of Rice Fields, and they want to use Orochimaru's power to revive their clan.

Unfortunately, Orochimaru didn't care about any of that. He only wanted to use the Fuma clan ninjas for experiments. In the end, the entire Fuma clan was used. It was only when Jiraiya and Naruto arrived that they were able to rescue many of the Fuma clan ninjas.

Following the ninjas of the Fuma clan, they soon found the entrance to Orochimaru's underground base.

Upon arriving at the base entrance, they made no attempt to conceal themselves. They were immediately spotted by Kabuto's surveillance system. Kabuto also emerged from the base, staring at the two Grass Ninja who had intruded, wondering what they were doing here.

"Senior, we've come to seek refuge with Lord Orochimaru," Lin Chuan said immediately upon seeing Kabuto emerge.

"Senior? You've seen me before?" Kabuto was a little confused. He really didn't have any impression of these two people. After all, he was eliminated in the first exam and was too insignificant, so he had forgotten about them.

"I met you before, senpai, during the Chunin Exams in Konoha. We are Grass Ninja participating in this year's Chunin Exams," Lin Chuan introduced himself, and continued, "Senpai, I have brought important information. We are being hunted by Grass Ninja..."

"Come with me," Kabuto said, his interest piqued by the prospect of important information. He wondered what kind of crucial information these two low-ranking grass ninja could possibly possess.

However, since they've already come this far, two mere genin can't cause any trouble. Let them go see Lord Orochimaru.

Afterwards, Lin Chuan and Kabuto followed Yakushi into the underground base and saw many experimental subjects imprisoned in cells. If Lin Chuan hadn't taken this path and joined Orochimaru, he would definitely have been one of the experimental subjects as well.

Following Kabuto, they arrived at the deepest room in the underground base, where Orochimaru was sitting quietly waiting. He had noticed unfamiliar footsteps before Lin Chuan and the others arrived.

As the three of them entered the room, Orochimaru smiled sinisterly. His mood was particularly good because of Sasuke's arrival, and he casually asked, "Kabuto, when are these two?"

"Lord Orochimaru, these two are Grass Ninja genin who participated in the Chunin Exams. They said they have important information to report and are being chased by Grass Ninja..."

After Kabuto finished explaining the situation of Lin Chuan and the other man, he stepped aside and waited for Lin Chuan to tell the story himself, so that Lord Orochimaru could give him a reason not to kill the two men for recklessly barging into the base.

When Lin Chuan saw Orochimaru covered in bandages, he knew he had come to the right place. Orochimaru had just possessed Genyumaru and his body was still in the process of adapting.

He quickly pulled Karin down to kneel on one knee, bowed his head, and made up a story to Orochimaru: "Lord Orochimaru, Karin is my teammate. I am a genin from Kusagakure and also an informant for Root. My superior is Hugh, and his mission for me is to find children with special talents..."

"He was assassinated before the Chunin Exams, the night before we set off for the exams. He must have sensed his impending death. He told me that if he died, I should come to the Land of Rice Fields to find Lord Orochimaru and bring this girl to me. She's from the Uzumaki clan and has a special medical ability that can heal injuries from a single bite..."

"Interesting? Root? When did this happen?" Orochimaru thought for a moment. He and Danzo did indeed need children with special constitutions at a certain time, just to test the compatibility of Wood Release with special constitutions.

It's unbelievable that even after so long, the Root spies are still collecting children with special talents and developing networks in other ninja villages to help collect children.

However, something was strange. That was clearly a Root spy, loyal to Danzo. Why did he send this child to find him instead of going to Root? He couldn't help but ask curiously, "Why don't you go to Konoha to find Root? Why did you come here instead..."

"I don't know why he brought me here. He just told me that if I take this out, the adults will understand it and I will gain the power to become stronger." Lin Chuan took out the little bird from the cage of the old man Jian Tai. Now it was up to Orochimaru to see if his imagination would match his.

Upon seeing the little bird in Lin Chuan's hand, Orochimaru instantly understood. This bird symbolized a caged bird, destined to suffer the same fate as the Hyuga branch family members if they remained under Danzo's command.

The Hokage's son is the Hokage, the strategist's son is the strategist, and the scapegoat's son is still a scapegoat...

Having just completed the Konoha Crush plan, Orochimaru understands Konoha all too well now. As a tool ninja of Root, the first thing he did after learning to think was to break away from Root and bring the children he had his eye on to him!

"Danzo, Danzo, your way of managing your subordinates won't work," Orochimaru sneered, mocking Danzo without any politeness. This old man was just as outdated, pedantic, and stubborn as his teacher.

Compared to the Root organization in Konoha Village, this place is indeed much better, but he's not a nanny, nor will he accept just any rotten fish or shrimp.

"Heh heh heh, interesting, very interesting, the struggles of a nobody, huh?" Orochimaru imagined all sorts of things, then suddenly stared coldly at Lin Chuan with his golden vertical pupils. The next question would determine whether he killed Lin Chuan, "Why do you want to become stronger...?"

"I want greater power. I want to protect her from being bullied by the Grass Ninjas," Lin Chuan said, his head still lowered. Although he didn't explicitly say he liked her, he could still feel Karin tremble slightly involuntarily.

This is a great reaction; it's the boy's liking and the girl's infatuation. Orochimaru, that old pervert, just loves this kind of thing...

"Hehehe, how interesting. If you want power, you have to survive first." Orochimaru was very satisfied with this answer. Whether it was love or hate, as long as you wanted power, he would grant it to you.

Whether he could withstand or control this power depended on his own abilities. He instantly stretched out his neck, revealing two sharp teeth in his mouth, and bit at Lin Chuan's neck.

Just then, the Sound Four and Kimimaro were all killed in the battle to retrieve Sasuke, and he needed to replenish his forces. If this kid could survive, he would be a decent tool.

After all, as an informant for Root, he managed to evade the pursuit of the Grass Ninja and even escaped all the way here with a child in tow. He must be a ninja with some skill, so he can do odd jobs.

"Hmm?" Lin Chuan saw Orochimaru stretch his neck and thought to himself, "It's finally here." The moment Orochimaru bit down, his nerves tightened, his fists clenched, and he gritted his teeth to hold back his scream.

The process of implanting the cursed seal was incredibly painful. Sasuke was implanted with the cursed seal after the battle and immediately fainted from the pain. He was in his prime when he received the cursed seal, and the pain caused his back to arch, and he curled up on the ground, convulsing, with saliva drooling from the corner of his mouth.

"Kabuto, take them away. If he can't hold on before we evacuate, take this girl with him." Orochimaru looked at Karin with her red hair and thought of Minato Namikaze's wife. They both had the same red hair and were from the same Uzumaki clan. They were both people who had lost their homeland!

If this girl really does have a special constitution that can heal, then she might be somewhat useful to him. This kid isn't entirely worthless; he didn't even bring a gift. Hehehe, hehehehe.

"Yes, Lord Orochimaru," Kabuto Yakushi grabbed the convulsing Lin Chuan and carried him to the room where the Sound Four were resting, throwing Lin Chuan inside.

Seeing that Karin still wanted to go in, he immediately raised his hand to stop her, gently pushed up his glasses, and smiled slightly, "You can't go in. The process of adapting to the cursed seal cannot be disturbed. The cursed seal is very dangerous..."

He understood Orochimaru's words. The fact that he was told to take the girl away meant that the girl was still somewhat useful. He couldn't let Karin in. If Lin Chuan failed to adapt to the cursed seal and went berserk, killing Karin, he wouldn't be able to explain himself to Orochimaru.

If Lin Chuan can't withstand the corruption of the cursed seal, he'll be a piece of trash that can be discarded at will. If Lin Chuan survives the cursed seal, he'll be just a useful tool in Orochimaru's hands, just like him, filling the vacancy of the Sound Four.

"Kawa, you'll be alright, you have to hold on!" Karin was stopped at the door. She didn't dare to force her way in, since she was unfamiliar with the place and even if she tried, she wouldn't be able to beat Kabuto.

boom--

Staring at the closed door and seeing Karin's worried expression, he only began to relax his tense nerves and think about the fusion ratio of the cursed seal and chakra when he heard the receding footsteps the moment the door was completely closed.

The cursed seal hurt so much that he couldn't calm down and think. Fortunately, he had made a few contingency plans. The fusion of natural energy is one to one, and since the cursed seal is a low-end version of natural energy, the proportion of chakra fused with it should be less.

It could be 0.9, or 0.8, or even 0.7 or 6.5; he needs to try them one by one.

"Ouch, that really hurts!" Lin Chuan endured the pain in his shoulder, went to the door, grabbed the doorknob, and opened the door. Seeing that the room was a pitch-black hole, he began to confidently and boldly try the fusion ratio of the curse seal and chakra, starting from 0.9.

He sat cross-legged by the black hole and began to refine his chakra, contacting the natural energy absorbed by the cursed seal, attempting to fuse the two together.

But as soon as he transferred his chakra, it was instantly devoured by the natural energy. He discovered that the natural energy was like a bottomless pit, and his Chunin chakra reserves wouldn't last long.

He could only adjust the fusion ratio of the two as soon as possible after the natural energy had devoured all the chakra. He found that 0.9 was not enough, so he had to switch to 0.8 to continue fusing. But 0.8 still didn't work. The natural energy was too domineering and too difficult to control. He felt like he was about to lose control.

The sudden surge of natural energy into his body caused excruciating pain, making him feel like he was about to faint from the pain, but he gritted his teeth and held on to his last bit of willpower.

But 0.9 and 8 didn't work, so he prepared to try a fusion ratio of 0.7, channeling all his chakra into natural energy. He decided to go all in and tried the 0.7 fusion ratio, but his body felt a sharp pain again, and he felt like he couldn't hold on any longer.

Under the erosion of natural energy, he no longer resembles a human. Having seen the cursed seal form of the Sound Four, he knows that he is no longer human.

Half of his body had become deformed, horns had grown on his head, his whole body was covered with black runes, his hair was growing wildly, his original black hair had turned white, and even his eyes were no longer normal brown pupils, but orange pupils.

Lin Chuan looked at his hands. One side was normal, and the other side was deformed. It really looked like two sides of the same coin, like the Buddha and the demon. Judging from his own good and evil aspects, evil should have the upper hand.

This is not hard to understand. After all, reality is often unsatisfactory. It's already quite good if one can retain their last moral bottom line and not cross it. It's impossible to expect them to be good people.

The final attempt at a 0.7 fusion ratio still failed. Before he was completely infected by natural energy and mutated into a mindless monster, before he lost consciousness, he stumbled into the black hole and disappeared from the Naruto world.

Before losing consciousness, his last thought was to curse under his breath, realizing he had no choice but to start over.

He could restart, he could try countless times, and he could always adapt to Orochimaru's cursed seal. He was not flustered at all when he failed once.

When he tried the fusion ratio of 0.7, he realized that he was just a little short. At that time, most of his body was already deformed and his condition was extremely poor. He knew that if he didn't leave now, it would be too late.

Next time I'll try a fusion ratio of 0.6. Since it's a lower-spec version of natural energy, the fusion ratio definitely won't be as high. I should have started with half, that is, a fusion ratio of 0.5. What a pity...