Simultaneously traversing from the beginning of the rampage in Konoha

Increase the Yin Release chakra to five times the amount used before, which is half the amount of Yin Release chakra used at the beginning.

This time, the dark incantation trembled slightly as it spread, as if it were approaching a critical point, but fortunately, the final step of sealing the stone coffin was successfully completed.

But the soul fluctuations were still fleeting, disappearing just as quickly as ever.

If it weren't for Uchiha Owl's exceptionally strong soul perception, he certainly wouldn't have noticed this anomaly.

Orochimaru's inability to master the Impure World Reincarnation technique is likely related to the flaws in his soul.

The strength of perception is closely related to the soul, and the lack of this crucial aspect of perception will multiply the workload of research.

"However, it wasn't a complete loss!"

Uchiha Owl muttered to himself, sensing the collapse of the experimental subject's body the instant the soul fluctuations disappeared.

It wasn't that the ninjutsu failed, causing the test subject to turn into dust; rather, the test subject turning into dust caused the ninjutsu to fail, which in turn affected other consumables.

"Then let's add Yang Release chakra."

Since the soul can be guided by Yin Release chakra, it should be correct to enhance the physical body that carries the soul using Yang Release chakra.

The idea is good, but figuring out how to use it is where the thought process diverges.

Is it to inject Yang Release chakra directly into the flesh, into the experimental subject's body, or both at the same time?

Fortunately, Orochimaru had prepared enough supplies to support Uchiha Owl's various ideas.

The flesh slices infused with Yang Release chakra and Yin Release chakra were found to repel each other, and the experiment encountered trouble right from the start.

Fortunately, the powerful control he gained over chakra attributes from the black rod prevented this step from becoming the end.

Under Uchiha Owl's control, there was only a slight disturbance, and the Yin Release and Yang Release chakra temporarily coexisted peacefully.

However, the meat slices, replenished with Yang Release chakra, started acting up again.

The flesh, which expanded and contracted like a heartbeat, resisted the activation of the Impure World Reincarnation technique and was unable to transform into incantations to seal the coffin.

After several attempts, the meat slices remained stubbornly firm, so Uchiha Owl had no choice but to place them in a new petri dish for future observation.

"In that case, there's only one path we can try."

As he muttered to himself, Uchiha Owl channeled Yang Release chakra into the unconscious test subject.

Having been nourished by Yang Release chakra, the anesthetic in the test subject's body seemed to be difficult to suppress.

The pupils began to move rapidly with small amplitude, the eyelids trembled slightly, and the eyelids tended to open.

Uchiha Owl remained unmoved, his movements still flowing smoothly and effortlessly.

bang~

The coffin lid closed, and the still unconscious experimental subject was plunged into darkness. Then, the piece of flesh that had been contaminated by Yin magic was placed in the center of the coffin lid.

"Summoning Jutsu: Impure World Reincarnation!"

The dark incantations sealed the coffin, followed by a rumbling, sluggish sound as the lid was opened.

This time, the experiment was a success.

Nothing unusual happened until the coffin lid was completely opened and the coffin fell to the ground.

"It worked?"

"That simple?"

Uchiha Owl was somewhat surprised by the results of the experiment, and then walked towards the coffin to observe it up close.

"Um……"

Looking at the twisted mass of flesh in the coffin and feeling the intense resentment emanating from it, Uchiha Owl fell silent.

"Too much Yang Release chakra was inputted."

Although it has not yet been a complete success, at least the key points have been grasped. As long as we continue to try, it won't be long before we can achieve complete success.

"Hahaha, hahahaha, Izumi-neechan, Aunt Hazuki, and Father and Mother, hahahaha, we're finally going to meet!"

An overwhelming joy welled up inside him, and the empty, gloomy laboratory was suddenly filled with joyful laughter.

After a long while, having fully released his joy, Uchiha Owl began repeating the experiment.

On the first day, through continuous trial and error, thirty-one experimental subjects were consumed.

The next day, his excitement gradually subsided, and he began to ponder the relationship between the changes in Yin Release and Yang Release and ninjutsu. Thirteen experimental subjects were consumed.

On the third day, seven bodies were found.

On the fourth day, eight bodies were found.

On the fifth day, a flash of inspiration led to a significant increase in progress, with twenty-one experimental subjects consumed.

The sixth day, the seventh day, and all the way to the twenty-first day.

"Summoning Jutsu: Impure World Reincarnation!"

Runes sealed the coffin lid, which slowly opened, and a figure, its body ashen and covered in dust, crawled out stiffly.

"Where am I?"

"Isn't I dead?"

The seemingly resurrected ninja was slow-witted and looked around with some confusion, while slowly drawing a kunai from his ninja tool pouch at his waist.

"Welcome back to the human world, Senju Xia Ling."

Uchiha Owl looked mockingly at the living dead before him, who was both alive and dead, with his pair of scarlet eyes.

Both being the two founding clans of the village, the Uchiha were at least slaughtered by traitors during their rebellion.

Even in the original work, there are only a few remaining members of the clan who are able to pass on the name of the Uchiha.

The Senju clan, on the other hand, was completely destroyed by their own leader and wiped out of the ninja world.

Although there are many descendants, who can still call themselves Thousand Hands now?

Even Tsunade herself never believed she could shoulder the burden of the Senju clan.

"Uchiha!"

"kaleidoscope!!"

When Senju Xia Ling saw those eerie scarlet eyes and the simple yet strange barrage of barrages, even her slow-witted mind reacted.

The current situation is definitely not a good thing!

After all, the Uchiha clan is full of lunatics, and those who have awakened the Mangekyou Sharingan are even more insane—this is an absolute consensus among the Senju clan.

The child in front of me who can activate the Mangekyou Sharingan is definitely a psychopath of the highest order.

Unfortunately, despite being filled with panic, I felt powerless; my mind was sluggish, but my even more sluggish body couldn't keep up at all.

She could only watch as Uchiha Owl walked over step by step and shoved a kunai covered in runes and talisman paper into her head as if it were a mud pit.

With the talisman entering her body, Qian Shou Xia Ling's dusty appearance instantly returned to normal, fair skin, making her look no different from an ordinary person.

"What is this?!"

"What did you do?"

Her tone shifted from doubt to terror. Senju Natsumi, feeling completely out of control and unable to move an inch, felt a chill run down her spine.

"This is the Impure World Reincarnation Technique, which can forcibly summon the souls of the dead and give them an immortal body, thereby controlling them."

Uchiha Owl chuckled as he introduced them, a playful glint in his eyes.

"As expected of the evil Uchiha clan, even their ninjutsu is so vicious!"

"Really? Is it that vicious?"

"...Otherwise, what else could it be but disturbing the soul of the deceased and corrupting their consciousness? Isn't that malicious enough?"

Although she sensed something was amiss, Senju Natsumi still spoke her mind without hesitation.

"Did you tell me everything that was on your mind?"

"I've added a little something extra to this ninjutsu, so you won't be able to hide anything from me."

"Oh right, I forgot to mention, this ninjutsu was invented by the evil Tobirama Senju."