Chapter 154: A Medical Ninjutsu Surpassing the Yin Seal is Born
The Ōtsutsuki Clan planted the Divine Tree on this planet, absorbing the planet's natural energy to convert it into chakra and nurture the Divine Tree's fruit.
After Kaguya ate the Divine Tree's fruit and gave birth to two children, one of them, the Sage of Six Paths, established the Ninja Sect, attempting to use chakra to achieve connection between people, so that there would be no more conflict and misunderstanding among humans.
It's just a pity that the Sage of Six Paths failed later; people actively severed the connection, injecting their own will into chakra, turning it into a weapon for conflict.
From this perspective, Nojuro Ryun's two abilities, Cellular Activation and Spiritual Fetus, do indeed have a similar operational logic.
But the gap in strength level is too vast.
The ultimate limit of these two abilities of Ryun's is at the Kage level; to go further, one would need to integrate Sage Art and the power of Yin-Yang to even touch the fringes of the Six Paths' power.
[Remember this domain name, read Taiwanese novels and go to the Taiwanese Novel Network, twkan dot com, for you to read.]
Ascending to the Six Paths level would also require a massive infusion of energy, a gap that cannot be bridged by talent alone.
What is certain is that these two techniques have great future potential, and they might become the key to Ryun's further advancement.
Next, we'll see if the version of him in the simulation can develop the Spiritual Fetus technique.
[At a critical moment in your research, the Fourth Great Ninja War breaks out. Although you are not a ninja, your lover, Haruno Sakura, participates in the war, so naturally, you cannot stand idly by.]
[During the war, you fully demonstrate your power of the Flying Thunder God. Although it's difficult to enter the core battlefield to assist Naruto and Sasuke, you play a significant role on the periphery and in logistics.]
[You assist in Orochimaru's revival and witness him summoning the four Hokage. The four Hokage are also astonished by your existence. After the First Hokage hears from Orochimaru that you have inherited his will, he laughs heartily with joy.]
[You help Sasuke and Itachi subdue Yakushi Kabuto, causing the Impure World Reanimated army to disappear earlier and reducing casualties in the ninja world. You also save Ino and Shikamaru's father, which finally earns you Yamanaka Inoichi's recognition.]
[Finally, you witness the Six Paths battle by the side of the four Hokage, thereby gaining some insights into the utilization of Yang Release chakra and the transformation of life force.]
[You even find the time to ask the First Hokage questions, and he ungrudgingly tells you some application techniques for Cellular Activation, Sage Mode, and Wood Release.]
Ryun was shocked again. So this is how it could be done!
Right, in Konoha, he was already the inheritor of the First Hokage's Will of Fire. How could the First Hokage possibly be stingy with his new experiences?
Once the simulation ended, he definitely had to check these new experiences immediately.
At the very least, with these, Ryun wouldn't need to take detours.
[The Fourth Great Ninja War ends with the combined efforts of Naruto and Sasuke. The two of them are also severely injured by their final battle at the Valley of the End. You, having already advanced your research on Yang Release and life force, directly join Sakura and Tsunade to regenerate their arms for them.]
[You even heal Guy's leg, but his physical condition is still far from what it was; he can no longer use power beyond the Sixth Gate in combat. Guy is already satisfied with this, and in the short term, there are no powerful enemies left that would require Guy to go all out.]
[At this point, your reputation is completely solidified. Your fame in the field of medical ninja, thanks to the Healing Resurrection Technique, even surpasses Tsunade's, making you the new God of Medical Ninja. Coupled with your hidden Flying Thunder God abilities, many speculate that your strength is not inferior to that of the previous Hokage.]
[Unfortunately, the universally acknowledged strongest in the ninja world at this time are Naruto and Sasuke. You have no intention of competing with them for the top position and instead continue to focus on the research and development of ninjutsu.]
[In the year 70 of Konoha, you get married. Your marriage partners are Yamanaka Ino, Haruno Sakura, Hyūga Hinata, and Mitarashi Anko. The wedding of five people shocks the ninja world, but all factions come to offer their congratulations, and no one dares to raise any objection to your wedding.]
Seeing this, Ryun was slightly stunned.
How did he end up marrying four at once?
Had he not been focused on courting Sakura and researching ninjutsu? Well, it seemed his foundation had been laid too solidly.
As the main push of this simulation, Sakura needed no further explanation.
With the power of the Flying Thunder God, Ryun could not possibly stand by and let Ino's father die, and that probably constituted the key condition for Ino marrying Ryun.
As for Anko, she was a woman who had already changed her surname to Nojuro in her heart.
And Hinata's personality determined that once she set her sights on Ryun, she would not change; she might have been privately preparing herself to be a bride for many years already.
Four it is, then. Marrying four beautiful women at once, what more could Ryun ask for?
This almost certainly meant that, from now on, Ryun could try to leave behind even more descendants at once.
Ryun thought contentedly, clearly forgetting one thing.
[After marrying, you are not in a hurry to have children. Instead, you tell Sakura and the others that you want to continue researching medical ninjutsu. The girls agree. Two years pass, and you still have made no progress in the direction of the Spiritual Fetus.]
[Because you helped Orochimaru revive, you have maintained correspondence with him. After learning about your research difficulties, he invites you to visit his laboratory. You are surprised to discover that Orochimaru has already cloned a boy as his successor, and he even wants another one.]
[Orochimaru tells you that since you want to create a spiritual fetus, you need to observe a real fetus. You look at Orochimaru's cloned son, but Orochimaru laughs and says you should make your own wife pregnant, not look at his son.]
[You are inspired and return to Konoha. That night, you take your four wives to soak in a hot spring together. Everyone just thinks you are in a bad mood and does their best to comfort you. It is only when you discard the safety tools Ino brings out that they realize you are ready for everything.]
[You apply medical ninjutsu, getting all four wives pregnant on the same day. This incident is spread by Tsunade after she has been drinking. For a time, a steady stream of people comes to you for treatment, and you gradually begin to increase the number of patients you see, experiencing the meaning of life through this.]
[Furthermore, every day, you spend half a day engaging in chakra exchange with your several wives. In this way, you silently experience the nurturing and formation of life, meticulously recording the laws governing the generation and operation of their life force.]
[Nine months later, you finally gain an insight and inscribe a complex curse seal. Then, using your own and the girls' spiritual energy as seeds, and the sealing technique as the maternal body, you nurture a living ninjutsu that possesses spiritual fluctuations. You name this pure spiritual entity the True Spirit, and name the entire ninjutsu system the True Spirit Seal.]
[As you predicted, the True Spirit Seal can controllably and continuously convert one's own physical energy into life force. This life force can be directly absorbed by the human body, thereby nourishing it, granting eternal youth, and greatly extending lifespan. The accumulated life force can also be used to heal others, and even regenerating severed limbs is not a problem.]
[The only issue is that the existence of the True Spirit is too weak, far inferior to a ninja's own spiritual will. This leads to its conversion efficiency being very low; it might take a month of accumulation to perform a single ninjutsu. This is unavoidable. Once the True Spirit strengthens, it would gain its own will, and then it would no longer be able to generate life force. This is a paradox that currently cannot be solved.]
Seeing this, the surprise on Ryun's face was completely unconcealed.
It had actually worked.
A ninjutsu comparable to Cellular Activation, and even surpassing Tsunade's Yin Seal in terms of development difficulty, had been successfully researched by him.
Theoretically, this could no longer even be called a ninjutsu; it could be considered a kind of demigod technique that transcended mortal limits.
However, this technique is also quite dangerous ethically, because it mimics the life force conversion process of a fetus and also requires the spiritual energy of both a male and a female ninja as a primer.
If it were to acquire a certain degree of will, it might truly be born as a living being, just like Black Zetsu and Kaguya Otsutsuki.
But there are plenty of ninjutsu in the ninja world with similar risks; Ryun's is just a drop in the bucket.
With the simulator, Ryun does not need large scale human experimentation either. As long as he does not talk about it, no one will know the principle of this technique.
As for whether others might see through the technique's secrets, there's even less need to worry about that.
Even Tsunade's Yin Seal was unique before she taught it to Sakura, let alone the True Spirit Seal, which is theoretically more difficult than the Yin Seal.
[A month later, your children are born.]
[You have daughters with Haruno Sakura and Mitarashi Anko, and sons with Yamanaka Ino and Hyūga Hinata.]
[You name them Nojuro Ren, Nojuro Nuo Mi, Yamanaka Tetsu, and Nojuro Teru respectively.]
[Congratulations, simulation successful. Calculating the bloodline power of your descendants...]
Seeing this, the smile on Ryun's lips froze slightly—Hinata had also given birth to a child?
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