Naruto: The Uchiha's Scientific Madman

After noticing the abnormality in the wall.

Uchiha Ao did not act rashly.

The Second Hokage, Tobirama Senju, was a very suspicious person. Hiding such a place on the wall meant either there was something good inside or it was a trap.

They don't want ordinary people to see it; it's specifically designed to harm people with ulterior motives.

To avoid being harmed by Tobirama Senju.

He checked it several times.

Any doubts were thoroughly investigated.

He discovered two hidden installations, but over time, some of the original facilities had become ineffective, leaving only some patterns on the walls.

The first one is the outermost concealment genjutsu. Without the support of chakra, only a trace of chakra remains, and it has no original effect.

That's when he discovered the traces of the hidden chamber.

The second type is a detonation trap. Without proper handling, it will cause the contents inside to explode. If not handled carefully, it can result in severed fingers or arms, or even death on the spot.

However, under the observation of the Sharingan, the explosion effect was removed after the detonation rune was cleared.

After dealing with these two issues.

Ao opened the place that Tobirama Senju had hidden.

It was a dark room of about sixty square centimeters, containing three items.

A notebook about two fingers thick, filled with writing, its pages showing signs of weathering over time.

Ao picked it up and glanced at the first and last pages. He found it to be Tobirama Senju's experimental diary, which recorded his research on ninjutsu from the age of ten until his last research project and its contents.

This reveals Tobirama Senju's research approach.

This is a very good resource that can provide a lot of inspiration and reference in future research.

The second item is a contract.

Contract object... Death

Contractor... Uzumaki Ashina

……

Ao looked at the contents and was puzzled. How could it be something like this? The Uzumaki family's contract, why would it be in Tobirama Senju's hands?

Could this be something Tobirama Senju obtained during the Uzumaki clan massacre?

Judging from the contents of this contract, it should be a contract signed between a former vortex clan chief and a demon god, exchanging his soul for a sealing technique.

Although the contract did not describe the name of the technique, Qing could tell from the hand seals described above that...

He immediately understood the name of the technique—the Corpse Demon Sealing Technique.

He had seen the hand seals and techniques for this technique in the materials provided by Orochimaru.

Si-hai-wei-mao-xu-zi-you-wu-si!

After forming the hand seals, one can summon the Grim Reaper, sacrifice one's own power, and obtain the Grim Reaper's help to devour the enemy's soul.

After carefully reading the contents above, Qing felt that there was nothing special about it; it simply described a very simple matter.

There weren't even detailed terms and conditions.

It only states that an exchange was made with the spirits using their souls.

Why would Tobirama Senju have placed it in a secret room?

Qing was very confused.

He thought for a moment...

I decided to try a different way of looking at it to see if I could uncover the secrets behind it.

Qing then sat cross-legged on the ground and quickly formed a hand seal with both hands!

"Spiritualization Technique!"

The soul, emitting a pale blue light, slowly floated up.

In a spirit form.

It allows you to see many hidden details in reality.

When he looked at the contract again in his spirit form.

They discovered that this piece of paper, made of some unknown material, was emitting a dark, black light.

A thread pulls at a certain place in the void.

As Qing followed the silk thread, a terrifying ghost face, a masked monster with a blue face and fangs, suddenly appeared before her eyes.

The monster seemed to sense his gaze, and suddenly turned its expression, staring straight at Uchiha Ao.

Just one glance from him sent a strong sense of crisis through Qing's heart.

A strange gravitational force faintly appeared in the void, slowly drawing him into it.

Something is wrong!

This thing will follow the silk thread to find its way here!?

Qing reacted instantly, immediately ending her astral projection state and returning to her body.

"Holy crap! Tobirama Senju... left behind something so terrifying, it scared me to death!"

"Is this research something I, a Jonin who has just left the beginner village, should be involved in?"

"That's Death!?"

After Qing's soul returned to his body, he cursed loudly with a livid face.

Tobirama Senju was indeed a cunning old fox.

I almost got infected!

This contract is similar to the Vortex Mask, and can directly connect to the Grim Reaper's true form, which may not be an incarnation, but the real body.

Qing flipped open the back of the contract and found it covered with a large number of names of the Uzumaki clan, seemingly the name of every caster.

What kind of paper is it that has maintained this texture for so many years?

Ao felt an invisible gaze watching him. He dared not delay any longer, quickly took out the box that Orochimaru had opened and put away earlier, put the contract inside, closed it, and used chakra to create an isolation barrier to simply conceal his aura.

Then it was sealed into a scroll.

Only then did I feel that the watchful gaze that felt like a thorn in my back had lessened somewhat.

hiss.

Qing gasped, feeling as if he had been tainted by something unclean.

Damn the Uzumaki clan.

He cursed inwardly, thinking how unlucky it was to be targeted by something like this.

Perhaps we should go to the Whirlpool Clan's territory and see if that mask can dispel this bad luck.

I also need to learn some sealing techniques...

It's better to be prepared.

He pondered silently, his gaze involuntarily falling on the last item placed in the secret room.

A specially made kunai, engraved with unique symbols.

The markings depicted on the talisman looked somewhat familiar.

After examining it closely, Qing noticed a striking resemblance to the contract she had just seen—what was its purpose? To control souls?

and many more……

Would Tobirama Senju put something so simple here?

Ask yourself.

If I were Tobirama Senju, I certainly wouldn't put such a simple and ordinary standard kunai here.

He pondered for a moment.

Suddenly I felt a noise behind me.

Turning around, I saw Orochimaru standing at the laboratory door.

"Qingjun, it seems you've discovered something incredible!"

Orochimaru asked greedily.

After a period of cultivation, his soul not only did not weaken due to the rebirth of the undead, but instead became even stronger.

He keenly noticed the commotion that Uchiha Ao was making in the laboratory.

He immediately dropped what he was doing and rushed over.

Just then, they saw Uchiha Ao examining a strange, specially made kunai.

"Teacher, this is something left behind by the Second Hokage. I don't understand what it does, but I was just about to send it to you."

Ao turned around, waved his hand, and immediately handed the kunai in his hand to Orochimaru.

Orochimaru glanced at the entire laboratory without leaving a trace. Compared to when he first came in, there were two fewer useless boxes.

Nothing else has been touched.

However, they discovered the Second Hokage's secret room in the empty laboratory.

This kid... he's really meticulous!

He discovered even such a well-hidden place.

Orochimaru was slightly surprised. He had been so focused on packing that he hadn't found anything after opening one of the two wooden boxes because he was in a hurry, and hadn't paid any more attention to it.

Unexpectedly, there was a hidden world behind the box.

"This kunai is a special version of the Flying Thunder God technique, engraved with the Second Hokage's signature..."

Orochimaru took the kunai, glanced at it briefly, and then spoke.

Suddenly, after careful observation, he noticed something different.

"Wait... no... it's not Flying Thunder God!"

Orochimaru suddenly pulled out a scroll, spread it out in his hand, and quickly skipped over the previous contents to the last page.

A pattern very similar to that on the kunai appeared on the scroll.

"Impure World Reincarnation: Soul Manipulation Technique!"

Orochimaru's face flushed an unnatural crimson as he spoke excitedly.

"I didn't expect the Second Hokage to have already figured it out! But he didn't describe it in the research data on Edo Tensei, and this mark is not perfect either..."

"What method did he come up with to solve the problem of soul control?"

"That completes the Impure World Reincarnation technique! But why didn't the Second Hokage use it during the First Shinobi World War?"

Orochimaru muttered to himself in confusion, the bewilderment on his face gradually fading, his eyes turning slightly red.

"The second generation..."

Orochimaru gritted his teeth and spat out a few words.

This technique, which can revive the dead and restore nearly half of their former fighting power, could easily quell the First Shinobi World War if the First Hokage were summoned, even with only half his power.

In this way, his parents would not have been killed in the war.

The second generation...

What are you thinking?!

Orochimaru's expression turned grim, and a hint of hatred even appeared in his eyes.

His usually calm demeanor suddenly became somewhat erratic.