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

Bai Yun and the other person found Lin Chuan early in the morning and asked him what had happened...

"Young man, how did you find them? And what's with the blood on that child?"

"Captain Hayabusa," Lin Chuan did not answer Okisuke's question, but instead stood up and looked at Hayabusa Shirakumo.

"It's good that you're alright. Tell me what happened last night." Bai Yun saw that Lin Chuan was alright in the morning and didn't pay attention to the ANBU mask in front of Lin Chuan. As Lin Chuan's team leader Jonin, how could he not know that Lin Chuan had been to Root in the past?

He even knew that Lin Chuan's teacher was Maruboshi Kosuke, but he didn't care, since going to Root was one of the experiences of a ninja.

Otherwise, how could Lin Chuan have disguised himself as a member of Konoha's Anbu? It was a clever move. When one's strength is insufficient, one can use the strength of another to keep the enemy guessing about one's true strength. It was a top-notch strategy, and he performed quite well.

"Yes, Captain Zaojian," Lin Chuan put away his ANBU mask and dagger, and told the two, "Yesterday I was secretly protecting the target, and I discovered that they didn't retreat towards the outpost, but instead retreated towards the Land of Fields..."

"After tracking them to the Land of Fields, I discovered that the two were lovers and had no intention of returning. Just as I was about to knock them out and take them away, two Cloud Ninja appeared..."

He continued his story, saying that the young samurai killed a Cloud Ninja, and then, disguised as an ANBU member, killed another Cloud Ninja. Finally, he brought the two of them to the border outpost here before informing them.

"Young man, what's with the blood on that child?" Oki asked Lin Chuan again. He wasn't annoyed by Lin Chuan's indifference, after all, he wasn't Lin Chuan's direct superior.

Lin Chuan looked at the scarred samurai, who was also wearing a red scarf. If he wasn't mistaken, this man should be Mifune's second-in-command. He continued, "That blood was his own. When he killed that Cloud Ninja, he was also stabbed with kunai. I thought they would die together, but when I checked his injuries, I found that the wounds had healed..."

"How is this possible?" Okisuke was incredulous. Judging from the bloodstains on his clothes, he had lost a lot of blood. It was impossible for him to survive under those circumstances, let alone a teenager.

"There's a heretical cult in the Land of Hot Springs. I've heard that believing in this cult grants immortality," Lin Chuan said, stopping short of continuing. He trusted that the clever samurai would understand.

"Thank you for informing me," a hint of doubt flashed in Okisuke's eyes. He nodded slightly to Shirokumo, then instantly left and returned to the outpost, intending to take the girl and the child, who was suspected to be a follower of the evil god cult, back to the capital of the Land of Iron.

There are also surviving non-Iron Country warriors; everyone must be carefully screened to prevent followers of the evil god cult from infiltrating them.

"Chuan, do you believe in immortality?" Bai Yun looked at Lin Chuan in the morning. This mission had too many unexpected events, especially since it involved the Evil God Cult. He had to assess Lin Chuan's mental state to prevent him from being brainwashed by the Evil God Cult.

"Captain Morning, immortality consumes lifespan, just like how medical ninjutsu accelerates wound healing. I'm not illiterate," Lin Chuan said, somewhat speechless. Please don't look at me like I'm an idiot.

"Haha, so you knew," Baiyun laughed for once in the morning. Konoha had long since thoroughly studied the principles of medical ninjutsu.

Compared to dying on the battlefield or being injured and dragging down teammates, causing even greater casualties, medical ninjutsu accelerates wound healing and consumes the number of cell divisions, merely shortening the ninja's lifespan, which is far better than the former two.

"Let's go, I really want to get a good night's sleep, I'm so tired," Lin Chuan yawned. He had been tracking the village all night and was tense when he ambushed the Cloud Ninja. He didn't dare to relax even when he got to the outpost, for fear of being killed by the ninja from his own village.

Seeing Baiyun in the morning, he finally relaxed and wanted to go straight to sleep, but that was impossible.

"You can't sleep yet. Come with me to the outpost in the Land of Iron. We'll rest there for a day before setting off for the Land of Iron. The mission isn't over yet..."

"Captain, did Tokuma-senpai succeed?" Lin Chuan sighed helplessly, and could only continue running with Bai Yunzao towards the border outpost of the Land of Iron, despite his exhaustion.

"Success! We received a message from Tokuma that they have met up with the escorting samurai and should have arrived at the capital of the Land of Iron by now. Once we deliver the client's daughter there, our Rank A mission will be complete..."

"Captain, this mission is so tough, could you ask the client to upgrade the mission level?" Lin Chuan knew that if they encountered strong enemies during the mission, they could gradually upgrade the mission level; the Land of Waves arc was a good example.

"Okay, I'll discuss it with the person who commissioned it, especially since you made a significant contribution this time." Bai Yun had only asked Lin Chuan to escort the target away in the morning, which was considered a completed mission. However, Lin Chuan's performance was even better than expected, which is all part of his resume for promotion to Chunin.

"Captain Zao, this is all I should do. Captain and Kuno-senpai were bait. Tokuma-senpai escorted the client to the capital of the Land of Iron. They were involved in the most dangerous missions. I only killed a Cloud Ninja. I'm far inferior to you..."

"Sometimes what's yours is yours, no need to be modest. The three of us Jonin won't steal your credit," Baiyun said, quite satisfied with Lin Chuan's performance on his first mission. The more he looked at the kid, the more he liked him.

Disguise and infiltration, intelligence gathering, using clones to probe, silent tracking, assassinating Cloud Ninjas—this kid is born to be a ninja, he's just too good at being one.

If Baiyun Zaojian knew about the "Sacred Body" meme, she would probably call Lin Chuan the Ninja Sacred Body. Unfortunately, Baiyun Zaojian didn't know.

"Captain Morning, since you've said that, I won't hold back. I've heard that every samurai in the Land of Iron has a chakra blade, and I want one too..."

Lin Chuan drew the short sword from his waist. This was his second ANBU-issue short sword. He placed it flat in his palm, feeling somewhat nostalgic: "This short sword has been with me for four years, and I've worn it down. It's got quite a few nicks. I'm thinking of using the reward from this mission to exchange for a chakra sword, but I don't know if it will be enough..."

This is also why he wants to upgrade the mission level. The reward of a mere A-level mission of one million taels is simply not enough to buy a chakra blade. Only by upgrading the mission level to S-level can the mission reward become more than one million taels, with no upper limit.

Only then could he get enough reward to buy a decent chakra sword, which would be more satisfying to use for killing people. He could also imbue the blade with chakra, so he wouldn't have to worry about the blade chipping or breaking.

"No problem, we'll talk about it when we get to the capital of the Land of Iron," Bai Yun said, glancing at Lin Chuan's short sword and then touching his own long wind sword. For a swordsman who is proficient in swordsmanship, a good sword is indeed the best partner.

"Then I'll leave it to you, Captain Zaojian," Lin Chuan sheathed his short sword again, went into the guard post's guest room, and fell asleep immediately, not caring about anything else until he woke up...

……

After resting for a night at the border outpost of the Land of Fire, the Konoha ninjas, together with the samurai of the Land of Iron, set off again. This time, they traveled light, with the samurai carrying the slow-moving girl on their backs, and together they headed towards the capital of the Land of Iron.

As for where the young samurai went?

The young samurai sacrificed himself to protect the girl, and his body was buried on the border of the Land of Iron. The girl herself buried him in the forest where the young samurai protected the girl. Others who died in the caravan are also buried there, including the commissioner's double and the girl's double.

Upon seeing the samurai boy's corpse, Lin Chuan and Bai Yunzao instantly understood what had happened. Okisuke also came to talk to them, telling them not to make a fuss. Okisuke would act as a go-between regarding the matter of upgrading the mission level.

They call each other brothers in public, but behind the scenes they each pursue their own interests. Their actions are all acting, with very few genuine friends. They appear to be discussing human relationships, but their hearts are full of business. Everyone understands the principle, but it's unspoken. On the surface, they're all friendly, but deep down they each harbor calculations. They speak of friendship, but their accounts are meticulously kept.

"You're spouting rhymes, are you planning to take the postgraduate entrance exam?" Lin Chuan almost burst out laughing when he thought of this. Fortunately, it was a solemn occasion of a funeral, so he forced himself to suppress his laughter, almost causing internal injuries.

Looking back, he could understand Okisuke's intentions. After all, a dead childhood friend is a good childhood friend. Moreover, this childhood friend wanted to elope with a noble lady and was actually a follower of the evil god cult. He deserved to die, which was too lenient.

It's a real bargain for the boy to have a decent funeral. Fortunately, with the death of the samurai boy, the young lady's heart can be won back, which is not necessarily a bad thing.

Of course, while agreeing to Okisuke's request, he also told Okisuke not to reveal that it was he who saved the two of them, and to say that it was the Anbu who saved them. He didn't want to get into trouble and didn't have time to accommodate the bad temper of these nobles.

After two days of travel, he and his party finally arrived at the capital of the Land of Iron, where Hyuga Tokuma and the samurai of the city were waiting for them outside the city.

"Captain Haya, you've finally arrived." Hyuga Tokuma's mission wasn't too dangerous; he just needed to be careful. After all, the enemy's main force had been drawn away, while Shirakumo Haya and Tekuno's bait mission was the most dangerous.

"The mission is finally complete," Tekuno sighed. He had survived the most dangerous phase and was now resting in the capital of the Land of Iron. He could finally get some rest.

Suddenly, a wealthy woman rushed out from the crowd, hugged her dejected daughter, and tears welled up in her eyes. "Xiao hope, I'm so glad you're alright..."

"Are you alright?" The girl's father also stepped forward. Seeing that the girl was unharmed, he breathed a sigh of relief and suddenly whispered in her ear.

The two arrived at a secluded spot, where Okisuke revealed that the samurai boy was a follower of an evil cult, that he wanted to elope with the young lady, and that he had dealt with the samurai boy privately.

"You did a great job, thank you for your hard work. We'll talk about the rest when we get back," the girl's father nodded gently, his gaze serious. The fact that they had arrived in the Land of Iron safely was the greatest victory. They would settle the score later.

At the same time, Bai Yun gathered his teammates in the morning and told them about Lin Chuan's achievements. He also asked everyone to keep Lin Chuan's secret and not to reveal anything about him.

After all, it's a shady deal. If the client's daughter finds out the truth, the mission level upgrade will definitely fall through, which affects everyone's interests.

Everyone risked their lives for this mission, all for this little bit of commission. Now that there's a chance to upgrade the mission level and commission, everyone's happy to see it happen. Otherwise, what's the point of working so hard to complete the mission?

"Understood, Captain Hayabusa," Hyuga Tokuma looked at Lin Chuan again. He hadn't expected Lin Chuan to kill a Cloud Ninja Chunin with a single blow. Although he had the advantage of a sneak attack, ninjas only care about the result. As long as the goal is achieved, the process is not important.

Based on Lin Chuan's contribution to the mission, which was basically on par with theirs, they would have no further objections to the distribution of mission commissions.

After everyone had spoken, they went directly to the capital of the Land of Iron and entered the hot spring resort arranged by the person in charge. The four of them were able to soak in the hot spring in the cold weather, which relieved their fatigue. It was truly enjoyable.

Lin Chuan was also surprised to find that the chef in the caravan was actually the real client. The client and the girl sitting in the two carriages were actually doubles who died in the previous battle in place of the client and the client's daughter.

That battle was extremely fierce. Most ordinary people died, and even the samurai hired by the commissioners were almost wiped out. The samurai of the Land of Iron suffered heavy losses, and the commissioners had to pay for the wounded and disabled.

Lin Chuan sighed inwardly. Even in times of peace, the ninja world was still so cruel. If he had to live here for the rest of his life, he really didn't know how the people here could sleep at night. Just thinking about losing his life at any moment made him unable to sleep at night.

After sighing, he thought of his own affairs. The most urgent thing was to buy a chakra blade. He asked Shirakumo Hayato, "Captain Hayato, when are we going to return to the village...?"

"No rush. In about two or three days, after the client finishes dealing with their work and gives us the final payment, we can go back," Bai Yun said, resting her hand on the edge of the pool without opening her eyes, enjoying a rare moment of peace.

"By the way, Kawa, what kind of chakra blade do you want?"

"A single-edged katana, not too long, about one meter in length is fine." Lin Chuan is currently a little over 1.6 meters tall. A weapon that is too long is not suitable for his sword-drawing technique, while a weapon that is too short reduces his attack range.

His height of a little over 1.6 meters is a perfect match for a 1-meter-long chakra blade. He can draw the blade and chop people down incredibly fast, practically one cut to the bone.

"There are many master blacksmiths here. I'll go ask them for you tomorrow or the day after," Bai Yun said, having noted Lin Chuan's needs in the morning, before settling into the comfort of a bath.

"Ogawa wants to buy a chakra sword? You've come to the right place," Tekuno chimed in. Buying swords and ninja tools in a samurai community was indeed a good choice.

"Yes, Kuno-senpai," Lin Chuan nodded slightly in response to Kuno. The mission they were undertaking, including the return trip, would take about a month. There were still nine months left until the Chunin Exams.

After returning to the village, he should find Master Maruboshi Kosuke and learn the Leaf-style sword technique, Willow. If he can master this technique before the Chunin Exams, his time travel will be complete.

Then he'd put on a show during the Chunin Exams and leave...

After a couple of days of rest back in the modern world, he can begin his planned White Zetsu possession scheme to increase his survival rate in the Naruto world after each time he travels through time. By possessing a White Zetsu, he would be an adult, instead of having to grow up from a child.