Naruto: My version is ahead of the ninja world

"What exactly happened?"

Jiraiya paused at the cave entrance for a moment, then asked Orochimaru a question.

"Explosive tag".

Orochimaru's answer was concise and to the point.

Jiraiya glanced at the two injured people, then followed behind Tsunade.

Yu Gen didn't follow immediately. He asked Orochimaru, "Lord Orochimaru, should we send these two injured people back to Konoha? The situation in the village is hard to assess right now."

Although Tsunade is an excellent medical ninja, she probably doesn't have the energy to help these two right now.

"Let's stay here; they won't die anytime soon."

Temporarily? How long exactly is "temporarily"? Yu Xian felt that these two were closer to death than to surviving.

However, this decision not to send people to Konoha cannot be said to be wrong. For the wounded, it is safer to stay away from Konoha at this time.

Some sounds came from inside the cave. These sounds were hard to describe, but they could be summed up in one sentence: "The collapse of a human being."

After waiting a short while, Yugen went back into the cave. When he arrived at the location of the rope tree, Jiraiya turned around and glanced at him, his expression clearly not good.

Tsunade was completely unaware of the situation around her. She pressed her hands against the wound on Nawaki's abdomen, but the abundant life energy surrounding it had no effect on such an exaggeratedly open wound.

For a medical ninja of Tsunade's caliber, how could she not understand that she was doing futile work? Yet, this was all she could do; she was merely mechanically performing the rescue.

It's not that Tsunade's skill level is insufficient, but rather that her treatment methods are too conventional.

Yu Xian stopped beside her and said to Tsunade, "Conventional medical treatments are pointless; you can't handle this kind of injury."

"Hagoromo!"

Tsunade ignored Yugen, but Jiraiya spoke up to stop him... Jiraiya saw Tsunade's treatment as a sister's end-of-life care for her brother, and at this point, Yugen really shouldn't disturb her.

However, Yu Xian shook his head. If it were a dead person, he certainly shouldn't say anything at this moment. But isn't there still a possibility of survival?

"Lady Tsunade, what I mean is that in this extreme situation, the only option left is to take a gamble... I can give it a try."

He wouldn't help Nawaki before Tsunade intervened, but once Tsunade was at a loss, he could try anything as a last resort.

"you……"

Tsunade finally looked up at Yugen. On one hand, as a medical expert, she did not trust an amateur like Yugen. On the other hand, she really had no other choice at this point, so she was quite conflicted.

She hasn't forgotten about Yu Xian learning basic medical ninjutsu, so he could be her last lifeline?

"I have mastered a secret technique. Although it cannot achieve super-fast cell regeneration, it can enable rapid transplantation and functional reprogramming of autologous cells." Yu Xian could only say this much; he could not explain the more detailed principles.

After all, he can only answer questions about whether he can or cannot do it.

This kind of piecemeal medical approach was something Tsunade had never heard of before, but at least what Yugen had just said made her realize that he wasn't joking.

Yugen noticed Tsunade's hesitation, so he should be decisive. Therefore, without waiting for her reply, he placed his palm on Nawaki's chest.

"Lady Tsunade, do you think a ninja's hands or legs are more important?"

"hand?"

"it is good."

Tsunade wasn't answering the question; she was just baffled by it. Was this question even necessary? What kind of time was this?

But Yu Xian felt that he had received an answer. If the hands were more important, then losing one or two legs wouldn't matter.

It was only then that Tsunade noticed the black markings on Yugen's body. Then, to her disbelief, Yugen disappeared directly into Nawaki's body, just like he disappeared into the water.

Regardless of what Yu Xian was doing, it was clear that this was not traditional medical practice and looked rather strange. But strange as it was, Tsunade had a glimmer of hope... Only unseen methods could possibly treat such a serious injury.

Jiraiya was equally shocked. He was shocked by the concentration of natural energy in Yugen's body. Wasn't he afraid of being petrified by absorbing it so intensely?

However, Ryūchi-dong never petrifies; at most, it causes people to become mentally excited to the point of madness.

"I'm transferring somatic cells from his left leg to compensate for the organs and tissues he lost in his chest and abdomen," Yu Gen explained to Tsunade amidst his busy schedule.

Tsunade turned her gaze to Nawaki's legs and saw that his left leg was "melting" at a visible speed, becoming thinner and thinner, with a slimming effect even more obvious than liposuction.

"Even if cells from different organs and tissues are transferred, they can't replace them, right...?"

Tsunade was noticeably calmer; she was even able to discuss medical issues.

"Of course we will do our best to transform it, which involves a step of recompiling genetic information."

Tsunade clearly wanted to ask how this was achieved, but since Hagen couldn't answer that question, he preemptively said, "This process consumes a lot of chakra, so I have to stay focused."

Upon hearing him say that, Tsunade indeed quieted down.

This method of robbing Peter to pay Paul is something Yu Xian is confident about if he uses it on himself, but he can't guarantee 100% success if he uses it on others, though the principle is the same.

Just like how Jugo used his own body to heal Sasuke's wounds, "self-compensation" at least eliminates the problem of rejection.

This brick-moving-style treatment method is indeed quite exhausting for Yugen, consuming far more energy and chakra than treating himself.

After a while, once Nawaki's left leg had completely turned into skin and bones, Jiraiya suddenly spoke up, saying, "His heartbeat has returned."

Is this even possible? Is this what medical ninjutsu is all about?

"Thank goodness," Yu Xian breathed a sigh of relief, "but his leg is definitely beyond repair."

People should have come back to life, and they should be able to earn favors.

There should be an amputation surgery later on, and Tsunade should be able to do it herself, but that shouldn't make her hands shake... Trading a leg for a life, it's a very good deal no matter how you look at it.

After repairing Nawaki's internal organs, Yugen did not immediately heal the external wounds. He took out his hand, raised his arm to wipe the sweat from his forehead, and then said to Tsunade, "Lady Tsunade, please handle the follow-up attacks."

The fatal wound was treated by Yugen, and the aftermath was left to Tsunade to check and confirm the treatment progress.

Tsunade nodded, continuing to treat the injuries while simultaneously offering her praise:

"Your...medical ninjutsu is incredibly advanced."

The tone was certainly one of deep gratitude, but the praise for the technical expertise seemed somewhat forced.