They traveled through time at the same time, but the villainous scientist

Chapter 66 Senju and Uchiha
And so, without anyone knowing, the Second Hokage, Tobirama Senju, officially "joined" Orochimaru's secret experimental project.

Orochimaru naturally wouldn't tell anyone about successfully summoning the Second Hokage.

Once this is exposed, it will inevitably cause a lot of trouble.

With the full support of Tobirama Senju, a "research giant," the research project on combining Hashirama cells and the Sharingan progressed at an astonishing pace.

After all, most of his knowledge came from other worlds, while Tobirama Senju was a ruthless person who developed a series of overpowered ninjutsu such as the Flying Thunder God Technique, Shadow Clone Technique, and Impure World Reincarnation all by his own power!

His understanding of chakra and his approach to developing techniques far surpasses Orochimaru's.

"This idea... is simply genius!"

Meanwhile, in the laboratory, Tobirama Senju's exclamations of amazement could be heard from time to time.

The more he interacted with Orochimaru, the more shocked he became.

Orochimaru's knowledge system was far beyond his comprehension.

Those systematic theoretical frameworks and those ingenious logical deductions opened a door to a new world for him.

The clash of their ideas was like Mars colliding with Earth!

All sorts of novel ideas and bold hypotheses are emerging one after another.

Tobirama Senju even felt a sense of regret, lamenting that they hadn't met before Tobirama's death.

If he had met a fellow comrade who was equally passionate about exploring the truth earlier, perhaps he could have found a breakthrough in many of his unfinished studies.

"Orochimaru, what's wrong with your head?"

On one occasion, after solving a long-standing problem of energy stability, Tobirama Senju couldn't help but stare at Orochimaru and ask him a soul-searching question.

"I guess... I just tend to overthink things."

Orochimaru shrugged and brushed it off lightly.

He can't very well say that much of his knowledge comes from "advanced experiences" from other parts of the world, can he?

However, to their surprise, the experiment of fusing Hashirama cells with the Sharingan quickly hit a bottleneck.

They tried various solutions, but the results were never satisfactory.

The Sharingan eyes that were transplanted onto the clone bodies, apart from exhibiting pupil activity far exceeding that of the normal state under the nourishment of Hashirama cells, did not undergo any essential transformation.

Not only did it not transform from Sharingan to Mangekyou Sharingan, it didn't even transform from a single tomoe to a double tomoe.

"Strange...this is so strange..."

Tobirama Senju frowned, staring at the Sharingan in the petri dish that remained unchanged, completely baffled.

Based on his previous research on the Uchiha clan, the principle behind the awakening and evolution of the Sharingan is that Uchiha clan members generate a special kind of chakra after receiving a great stimulus.

This chakra's nature leans towards Yin attribute chakra, so his initial guess was that because his older brother's cells possessed the ultimate Yang Release power, the combination of the two might cause some kind of special change.

However, judging from the results of their experiments over this period, it seems that his initial speculation was wrong.

But if that's the case, why would Madara Uchiha bite his older brother for no reason?

Orochimaru was also puzzled. According to the plot of the "original work" that he knew, Madara Uchiha did evolve his Eternal Mangekyou Sharingan into the Rinnegan after transplanting Hashirama's flesh and blood.

There is no doubt about this.

His initial guess was based on this point.

The power of both the Rinnegan and the Sharingan, when traced back to their origins, comes from the Divine Tree.

According to botanical principles, in order to produce strong fruit, there must be a sufficiently strong root system and branches to provide nutrients.

A strong physique is the foundation for bearing and exerting this power.

Just like in the original work, Kakashi Hatake only had one ordinary Sharingan transplanted, and he had to lie half-dead every time he used it.

Nagato, who possesses the physique of a Sage of the Uzumaki clan, is able to directly wield the immense power of the Gedo Mazo.

However, the current situation is that the "wonderful chemical reaction" he had anticipated did not seem to occur between the Hashirama cells and the Sharingan.

If all you do is like Danzo, implant more Sharingan eyes into your body and rely on the powerful vitality of Hashirama cells to survive...

Orochimaru was quite confident in his cloning technology.

The cloning technology he possesses comes from the worlds of "Guyver" and "EVA".

It should be more than enough to clone a human prototype, and shouldn't fail at crucial stages. "Do you think it's possible... that Hashirama Senju and Madara Uchiha were, in fact, somewhat special?"

After thinking for a while, Orochimaru came to this conclusion.

"Ok?"

Upon hearing this, Tobirama Senju was taken aback for a moment, then fell into deep thought.

Orochimaru's guess does offer a new perspective.

He thought about it carefully.

He, his elder brother Hashirama Senju, and Madara Uchiha were contemporaries, and he knew their growth trajectories all too well.

Initially, the difference in strength between him, his older brother, and the brothers Madara and Izuna Uchiha wasn't actually that significant.

The real turning point came after he personally killed Uchiha Izuna.

After Madara Uchiha transplanted Izuna's eyes, his strength increased dramatically, and he quickly left them behind.

But what happened next surprised him greatly.

His elder brother, Hashirama Senju, after several battles with Madara Uchiha who had awakened the Mangekyou Sharingan, inexplicably caught up in strength, and even showed signs of surpassing him!
As the battle between the two intensified, their combat power skyrocketed, as if they were on a rocket.

Ultimately, they both reached a terrifying state that he had never dared to imagine at the time.

That power was beyond the scope of ordinary ninjas.

"But... from a genetic point of view, the difference between my cells and my older brother's is not that big."

Tobirama Senju hesitated before speaking, saying that he had also secretly collected and analyzed his elder brother's cell samples back then.

As brothers, both of them inherited the bloodline of the Senju clan, and at the genetic level, he could not find any decisive differences.

But his older brother did indeed display incredible power, such as his abnormal regenerative ability, his enormous chakra reserves, and his miraculous Wood Release techniques...

In the end, he could only attribute it to "extraordinary talent".

After all, some people's talents are simply unreasonable.

"What if this gap doesn't originate entirely at the cellular level, but rather from... chakra itself?"

Orochimaru took a deep breath and then asked in return.

"Chakra?"

Tobirama Senju raised an eyebrow, somewhat puzzled.

"According to the consensus in the ninja world, chakra is formed by the combination of energy extracted from the body's cells and spiritual energy."

"Since my cellular structure and my elder brother's are similar, and we both possess the bloodline of the Senju clan, then theoretically, the essence of the chakra we extract should not be vastly different, right?"

This has always been his belief.

The body is the container and source of chakra, and DNA determines the upper limit of the body.

"That's not necessarily true, Second Generation Lord."

"Isn't the Impure World Reincarnation technique the best example?"

Orochimaru shook his head and asked in return.

Upon hearing this, Tobirama Senju fell into deep thought.

"This technique proves at least two things."

"First, chakra is an energy that can exist independently of a living physical body."

Secondly, these chakras store almost complete physical information about the individual during their lifetime.

Through specific techniques, this information can, in turn, influence the physical body of the sacrifice, allowing it to replicate the original owner of the chakra in form and ability to the greatest extent possible.

Seeing this, Orochimaru held up two fingers and added an explanation.

If he remembers correctly, in the original story, Hashirama Senju and Madara Uchiha, these two men standing at the pinnacle of the ninja world, possessed a unique characteristic beyond their talent and hard work—

They are the chakra reincarnations of Ashura and Indra, the two sons of the Sage of Six Paths...

(Although many fanfictions depict the Rinnegan being awakened using Hashirama cells and the Sharingan, according to the Sage of Six Paths, the Rinnegan was awakened through the fusion of Ashura's and Indra's chakra, obtaining the power of the Six Paths, rather than simply through the fusion of the Senju and Uchiha clans.)
(End of this chapter)