Starting with Wood Release, he survives in Konoha Hospital and becomes a big shot.

"Haha, Little Temple Brother is really amazing. Tsunade-sensei doesn't usually praise people much," Yao Xingji said with a laugh from the side.

His prediction was correct. Kodera, who came from the Senju clan, had a unique talent for using superhuman strength. This talent was not usually apparent, but it was immediately displayed after Tsunade's guidance. This is the importance of a teacher.

In essence, superhuman strength is a form of chakra manipulation. In Naruto, superhuman strength isn't a ninjutsu or taijutsu, but rather the precise control of chakra. This extraordinary power comes from the technique of adjusting chakra, which involves gathering chakra in one's fists and fingers in an instant to achieve destructive power that cannot be exerted by physical strength alone.

This ability is particularly evident among the Senju clan, with figures like Hashirama Senju and Tsunade displaying terrifying strength. In Naruto, besides the Senju clan, Sakura is the one who uses superhuman strength the most. However, Sakura's identity is questionable. While the original work doesn't explicitly state her connection to the Senju clan, many passages suggest she may possess Senju blood; for example, her family crest closely resembles the mark on Hashirama Senju's forehead when he activated Sage Mode.

Besides, Shizune had been with Tsunade for so long, there was no reason why Tsunade wouldn't pass on her superhuman strength. As a medical ninja, Shizune's chakra control was definitely not weak, and she had the potential to cultivate superhuman strength. However, she never managed to cultivate superhuman strength, which also shows that the cultivation of superhuman strength has a certain hereditary component. Without the bloodline of the Senju clan, it is very difficult to cultivate superhuman strength.

At this moment, the extraordinary strength that Koji is displaying is sure to pique Tsunade's interest.

As expected, after carefully examining Koji for a while, Tsunade asked, "Koji, right? Do you remember your family? I mean, their background or something?"

Koji was taken aback by the question, and after a moment of hesitation, he said, "I'm sorry, Lady Tsunade, I was too young when my parents passed away, and I have almost no memory of them. So I don't know their background, or even their surnames. I only know that my name is Koji, and I don't have a surname."

Tsunade nodded and didn't ask any further questions.

The Senju clan has basically been completely integrated into Konoha Village. No one uses the surname Senju anymore. Even she, following her grandfather's will, does not mention the Senju surname. So this question is actually meaningless.

However, judging from the extraordinary strength that Koji has shown, this child is indeed very likely to have the bloodline of the Senju clan.

It was one thing to not know before, but now that she does, and he's her disciple's brother, Tsunade plans to teach him a lesson, as a way of helping the Senju clan.

"You have a great talent for training in superhuman strength. From now on, you will come with Xingji. I will teach you all the techniques for superhuman strength. As for how much you can learn, that depends on your own comprehension ability," Tsunade said gently.

Koji suddenly opened his eyes wide and looked at Tsunade, his expression full of shock.

"Hurry up and thank Tsunade-sensei," Yao Xingji nudged Koji, reminding him.

"Thank you... thank you, Lady Tsunade," Kodera said.

"Okay, that's enough for today. I'll take you back," Tsunade said.

After finishing their training for the day, Tsunade escorted the two to the Chinese home before leaving.

Inside the room, Koji looked somewhat dazed.

"Am I dreaming?"

"What do you think?" Yao Xing asked with a helpless smile.

"Hey, Hoshino, is my talent for superhuman strength really that high? Higher than yours?" Koji asked, holding the medicine Hoshino.

"Tsunade-sensei said that you have a great talent for superhuman strength, and I can't compare to you," Yao Xingji said with a smile.

During his previous training, Yao Xingji had already mastered the technique of using superhuman strength. He was indeed very talented in ninjutsu training, and could even easily master superhuman strength.

However, Yao Xingji did not fully demonstrate his talent, but deliberately suppressed it, resulting in a relatively mediocre performance.

Firstly, he wanted to highlight Koji's talent, and secondly, he didn't want to stand out too much in areas other than medical ninjutsu, lest he attract too much attention, which wouldn't be a good thing for him.

However, Yao Xingji did not completely suppress his talent. There were still many people in Konoha Village who needed to be guarded against, and he needed to use his strength to deter them. He certainly could not expose ninjutsu such as Wood Release, so the monstrous strength that Tsunade taught him was the best and safest strength that he could show.

"I feel that there is still a lot of what Lady Tsunade taught me that I need to digest. I need to practice some more so that I can't let Lady Tsunade down."

Ignoring the late hour, Koji ran straight to the courtyard and resumed his cultivation.

"Diligence is truly wonderful..."

Yao Xingji glanced at Xiaosi's energetic cultivation, then turned and went back to his room to sleep.

On the other side, Orochimaru's base.

"Xia Chuan, what's wrong?"

Orochimaru glanced at his subordinate, whose expression seemed a bit off, and asked him a question.

"Lord Orochimaru... I might be seriously injured, I'm feeling a bit unwell..." Natsukawa said, his face pale.

"Is Tsunade really that ruthless?" Orochimaru flashed to Natsukawa's side and placed his hand on Natsukawa's chest.

Although he is not a medical ninja, Orochimaru's research on the human body is no less than Tsunade's.

“The internal injuries are quite serious.” Orochimaru withdrew his right hand, his golden vertical pupils narrowing slightly. “Alright, you don’t need to come over for the next couple of days. Just stay home and rest for a few days.”

"Thank you, Lord Orochimaru," Natsukawa quickly said.

"Go down." Orochimaru waved his hand.

Xia Chuan left respectfully.

Orochimaru was the only one left in the base.

"His heart is beating a little fast. He seems very nervous. His injuries are secondary," Orochimaru muttered to himself.

Orochimaru glanced in the direction Natsukawa had left, but didn't investigate further, turning back to continue his research.

His experiments have yielded some preliminary results, but some bottlenecks have also emerged.

"Ordinary people's physical fitness is ultimately not good enough. If we can study the bodies of ninjas, we should make a lot of breakthroughs. The stronger the ninja, the more valuable their bodies are for research," Orochimaru muttered to himself.

A figure slowly emerged in his mind; perhaps their cooperation could be deepened further.

------------

Chapter 89 Dark Guard Training Group

For the next few days, besides attending classes at the Ninja Academy, Koji spent his time learning how to use his superhuman strength from Tsunade, along with Yakusei.

Soon, the weekend arrived, and the two had some rare free time. Tsunade also had her own things to do. After teaching the two the basic applications of her super strength, she went to take care of her own business.

That day, Yao Xingji greeted Xiaosi, who was practicing his superhuman strength in the courtyard, and then went out, intending to continue to fleece people at Konoha Hospital.

Studying under Tsunade for a period of time has caused Yao Xingji's chakra growth rate to slow down significantly, so he has to make up for it on weekends.

Swish!

Just as Yao Xingji closed the door, a figure leaped down from a nearby tree and landed beside him.

"Kakashi-nii-san." Yao Xingji was slightly taken aback, then greeted him with a smile.

"The Flower Country, what a fitting name." Kakashi glanced at the plaque above the door, then patted Yao Xingji's head and said, "You haven't been to Konoha Hospital these past few days. I've looked for you several times but haven't seen you, so I had no choice but to wait for you at your door."

"I've been studying medicine with Tsunade-sensei these past few days, so I'm not in the emergency room," Yao Xingji explained.

"I see." Kakashi nodded. "So, do you have time today?"

“I have time, what’s up?” Yao Xingji asked.

“Several members of our ANBU special training group are injured. If you have time, I hope you can treat them,” Kakashi said bluntly.

"no problem!"

Just when Yao Xingji was worried about where to fleece people, the sheep came to him on their own.

"Then come with me." Kakashi led Yakusei towards a spot on the edge of Konoha Village.

"Where are we going?" Yao Xingji asked with some curiosity.

“Go to the Anbu, they’re all waiting over there,” Kakashi said.

"Can I enter the Dark Division?" Yao Xingji asked. He wasn't a member of the Dark Division either, so he probably couldn't enter such a confidential place.

"It's alright, we're just going to the outer area, not the core area, and I'll be taking you with me, no one will stop us," Kakashi said casually.

"Ok."

Yao Xingji suddenly realized that the guy in front of him was the captain of the Dark Army. Sure enough, the second generation of officials are different.

Before long, the two arrived at a secluded training ground.

As Kakashi said, this is just the outer area of ​​the Anbu, not a secret. It is only separated by a fence and no other defense measures are taken, so the level of secrecy is obviously not high.

"Kakashi-senpai."

After the two entered the training ground, several genin immediately came over.

"Have the injured gather here," Kakashi said.

The order was quickly relayed. The Dark Guard was strictly disciplined, and in no time, one figure after another appeared in front of Yao Xingji and Kakashi, all of them bearing injuries.

Some of these people were people Yao Xingji had met before; they were the group that Kakashi sent to him for treatment after he was injured. But there were others that Yao Xingji had never met before, and they were most likely members of other special training groups.

"Everyone is aware of the current situation in the ninja world; danger is approaching. In order to prevent everyone from dying on the battlefield, I have increased the intensity of training, which has resulted in many of you being injured during training."

"Now, I've brought Star Lord here to treat you. I hope that once your injuries improve, you'll immediately get back into training and not let me down, nor your special training group leader," Kakashi said solemnly.

As Kakashi's voice fell, the eyes of the more than forty ninjas gathered at the scene all fell on Yao Xingji.

Most of those who had met Yao Xingji before had considerable confidence in his medical ninjutsu, but the other ninjas didn't look so friendly; some even showed contempt and anger.

"Kakashi, what do you mean by bringing such a brat here? Expecting him to heal us? I might as well bandage my own wounds," one of the Chunin, who looked to be around fourteen years old, said coldly.

He wasn't a member of Kakashi's training group, and as a fellow Chunin, he was even a bit older than Kakashi. He had long disliked Kakashi, who was several years younger than him and yet still acted arrogantly. If their original training group leader hadn't been injured, they wouldn't have been temporarily transferred to Kakashi's training group.

However, their special training is almost over. Once he becomes a formal member of the Anbu, his status will not be much lower than Kakashi's, which has led to many members of this special training group not listening to Kakashi.

"Is it necessary to bring a child like this to fool us? If you don't want to treat our injuries, just say so. There's no need to use such methods to suppress us."

"You can't beat our group, so you resort to such underhanded tactics to limit our strength? Do you really think the Dark Guard is your private property?!"

From the crowd, voices came in twos and threes, mostly mocking.

“Starry Sky Lord’s medical ninjutsu is very strong. He treated us before. If you don’t want him to treat you, you can leave here.”

"So what if you're in Group One? You were just transferred to Group Five for special training. You're nothing but trash!"

"Your team leader's skills are just so-so. He got injured even with such a simple task. I don't think the people he trains are any good either!"

……

Upon hearing anyone question Kakashi, the members of Kakashi's team immediately launched into a sarcastic retort.

The two groups of members had only been training together for a few days, and they couldn't stand each other. In particular, the group that was transferred over would be the next group to finish their special training and officially become members of the Dark Division.

Kakashi's group ranked relatively low, and there were many conflicts between the two groups during training together.

Yao Xingji secretly glanced at Kakashi, who was watching coldly from the sidelines.

"His calm demeanor suggests he anticipated this situation. So, what was his purpose in bringing me here...?"

In a short time, the situation was spiraling out of control, with the two groups of members starting to fight and push each other, and it looked like it was about to escalate into a conflict.

"Enough! Let's settle our conflicts as ninjas." Kakashi's cold voice brought a moment of respite.

"Tanaka, do you dare to duel with me?" A ninja from Team 5 pointed angrily at the fourteen-year-old Chunin from Team 1.

"What's there to be afraid of! You're just a defeated opponent." Tanaka sneered. "Oh, by the way, you're injured. Why don't you have that brat treat you first before you fight again? Hahaha!"