Warlock Invasion of Naruto.

Sasuke glanced at Orochimaru, who understood and nodded at him, indicating that he could rest assured.

"Let's go then." Having received Orochimaru's assurance, Sasuke had nothing more to say.

The group arrived at the Anbu office building in the center of Konoha.

Led by Naruto, the group quickly arrived at the warehouse on the first basement floor. The warehouse door looked no different from the wooden door of an ordinary room, but it was covered with a light purple thin film-like barrier that emitted powerful energy fluctuations.

"Seventh Generation."

The two ANBU ninja guards bowed respectfully upon seeing Naruto.

"Open the warehouse," Naruto said.

"Yes!"

Two ANBU ninjas simultaneously used a barrier-type sealing technique to open the barrier outside the warehouse.

Almost the instant the barrier opened, Issei sensed a large number of energy particles brimming with vitality through his passive perception ability of "sixth sense".

The source of these energy particles was a small piece of meat in a petri dish located in the center of the warehouse.

---Aside---

P.S.: I feel terrible.

10421191

[229. The Possibility of Advancing to Level Three Ahead of Schedule (Chapter 223)]

The dark warehouse didn't contain as many items as one might expect. Occupying more than a third of the warehouse's space were two cylindrical glass petri dishes, each three meters tall, filled with a light green liquid.

The petri dish on the left contained only a palm-sized piece of meat, while the petri dish on the right contained a much larger piece of body tissue.

Of course, the difference in the intensity of the energy particles emitted by the two sides is enormous.

Looking at the body tissue in the petri dish on the right, the energy particles it emits and the powerful cellular activity that Issei senses are comparable to the highly active interstitial cells that the original body has studied. However, when compared with the small piece of meat on the left, the difference is immediately apparent.

Ichisei walked into the warehouse and came to two huge petri dishes to observe them carefully.

"The cells on the right are highly active First Hokage cells cultivated by Granny Tsunade. My right arm was cultivated using First Hokage cells. The cells on the left are Urashiki's body tissue collected by Sasuke. Because of its strong phagocytic ability, even Granny Tsunade could not study it thoroughly and could not apply it."

Naruto approached Issei and began to explain.

Orochimaru and Kabuto also arrived beside the two.

Kabuto's expression remained relatively calm. After learning the Sage Mode of Ryuchi Cave, his sensory abilities were greatly enhanced. Furthermore, after undergoing cell transplantation and modification, his body was extremely sensitive to natural energy, allowing him to clearly sense the powerful energy emanating from his body tissues.

However, Kabuto is no longer as obsessed with becoming stronger and conducting experiments as he was during the Fourth Shinobi World War.

Orochimaru, on the other hand, looked at Urashiki's body with a keen interest in his eyes.

The Otsutsuki clan's body tissues are so much more cellularly active than the first generation. Even without strong sensory abilities, just entering the warehouse is enough to clearly feel the difference. The barrier outside the warehouse is not only for protection, but more importantly, it isolates such powerful life energy.

This power is as obvious to ninjas with strong energy perception as a spotlight in the dark.

Noticing Orochimaru's expression, Issei's heart stirred. It seemed that no matter which world Orochimaru was from, he was always filled with a desire to explore the unknown.

Thinking of this, Issei turned to Sasuke and asked, "Are these all the Otsutsuki cells you've collected?"

“Hmm.” Sasuke nodded and explained, “The earliest Momoshiki cells I collected failed to be used for research, and they almost devoured the medical ninja who was conducting the experiment. So I only collected a small part of Urashiki’s body tissue. I hope that someone might be able to find a way to deal with the Otsutsuki through cell research in the future.”

"Did you let Kabuto and Orochimaru conduct experiments?" Issei asked, but noticing Naruto and Sasuke's expressions, the answer was obvious. It was clear that because of what happened during the Fourth Shinobi World War, the Otsutsuki cells could not be easily given to the two of them for research. Even if Naruto and Sasuke agreed, the other high-ranking officials in Konoha probably would not agree.

Issei gently tapped the special glass surface of the huge culture dish, then turned to Kabuto and Orochimaru and said, "Get ready, I want to see just how high the cell activity of Otsutsuki Urashiki really is."

Although this world has even developed cloning technology, Orochimaru and Kabuto do not possess the technology for cell experiments, especially bloodline experiments. Many of their cell technologies are breakthroughs achieved because of Shin Uchiha's special physique, unlike Shiraha who has progressed step by step, their systems are not as complete.

However, given their experimental skills, after acquiring the memories of cell experiments shared by Issei, they should be able to master this technique during the cell culture process.

It will only take a few months.

The cells of Urashiki Otsutsuki alone cannot be thoroughly studied in a short period of time.

With the help of two professionals, Kabuto and Orochimaru, Issei quickly organized the experimental equipment in the storeroom and began his research on the spot.

He carefully removed Urashiki Ōtsutsuki's body tissue, then cut off a thin slice of flesh the size of a fingernail and placed it under a microscope.

Unfortunately, the experiments here were not sufficient, so at first, Ichisei only wanted to determine how strong the activity of Purkinje cells was and the difference between them and the host cell.

After confirming Urashiki's cell activity, Issei looked at Boruto standing behind him, waved to him, and said, "Kid, come here."

"Me?" Boruto paused for a moment, then walked up to Issei.

Yicheng took out a glass syringe about the thickness of a thumb and said with a smile, "It's your turn to help."

"Come on, come on!" Boruto was a little scared when he saw the thick syringe and the long needle, but he still gritted his teeth and stretched out his hand in front of Issei, lifting his shirt to reveal his fair arm.

"This is good for you too, it's just a shot."

One-Sincerity Way.

"Stop talking nonsense and hurry up..." Before Boruto could finish speaking, Issei's needle had already been inserted.

After drawing a full vial of blood, Ichisei patted Boruto on the shoulder with satisfaction and said, "Go stand over there for now, you can come back if you need more."

"Huh?!" Boruto looked surprised. Were they going to drain him dry?

Seeing Boruto's pained expression, Issei chuckled inwardly. Of course, he was just teasing him. The current experiment didn't actually require that much blood, but he planned to keep some for himself after the experiment was over.

After all, according to the characteristics of the Otsutsuki clan's 'Karma', although chakra carries the power of the soul, it will slowly erode and transform the body. Therefore, Boruto's cells will slowly become more like Momoshiki Otsutsuki, which is somewhat similar to the bloodline atavism of the descendants of bloodline sorcerers.

Of course, this process will probably take a long time.

Ignoring Boruto's conflicted expression, Issei turned back to the lab table, injected Boruto's blood into a test tube, and then dripped a drop onto the pork slices.

Urashiki's slices of meat, like dry sponges, absorbed Boruto's blood almost instantly.

At the same time, under the enhanced perception of the "sixth sense," the radiation field emitted by this piece of meat also increased. Although the increase was not high, Ichisei could still sense it, since wizards are exceptionally sensitive to radiation.

Seeing this, Issei continued to drip Boruto's blood into the slice of meat from Otsutsuki Urashiki. In a short while, all the blood in the test tube was consumed by Issei, while the thin slice of meat, about the size of a fingernail, remained unchanged.

Kabuto and Orochimaru, standing nearby, were also intently watching Issei's experiment.

Just then, the meat slices placed in the petri dish suddenly seemed to come alive, trembling slightly. They then gradually grew and expanded, quickly increasing in size five or six times, until they absorbed all the Boruto blood remaining in the petri dish. The entire petri dish looked as if it had been cleaned, without a trace of blood.

Furthermore, there was a noticeable fluctuation of chakra within the meat slices, giving the impression that they had suddenly transformed from inanimate objects into living beings.

Issei wasn't surprised by this, after all, Boruto was too weak right now. His body hadn't fully developed yet, and his cell activity was so much lower than Urashiki's that he had no ability to fight back.

Even decades after the First Hokage died, his cells were still alive and highly active. As for Urashiki Otsutsuki, a complete member of the Otsutsuki clan, even if his combat power was weak, his cell activity was far superior to Boruto's.

What I want to figure out is what strength of cells and nutrients Urashiki's cells actually need.

"You guys try to see if Naruto and Sasuke's cells can fuse with Urashiki's cells first." Issei looked at Orochimaru and Kabuto beside him.

"Ah."

Orochimaru and Kabuto also drew blood from Naruto and Sasuke on the spot, then each cut off a piece of Urashiki's flesh and placed it in a petri dish, then dripped Naruto and Sasuke's blood into it for observation.

Sizzle sizzle sizzle...

The moment Naruto and Sasuke's blood and Urashiki's body tissue came into contact, it was like water being poured into a hot oil pan, causing a violent reaction.

However, Naruto's blood reacted more violently with Urashiki's flesh, while Sasuke's blood reacted more gently with Urashiki's flesh.

Soon, Naruto and Sasuke's blood was completely depleted, and Urashiki's flesh slices shrank into a dry, crumpled ball, like crumpled pieces of paper.

However, there is a slight difference between the two slices of meat. The slice of meat from Urashiki, which absorbed Naruto's blood, has a significantly reduced cell activity, while the slice from Sasuke's has a slightly reduced cell activity.

"One side cannot absorb the other side, so it can only suffer internal strife?" After a brief observation, Yicheng realized that this was very similar to the result of the first-generation cell experiment that his main body conducted when he was an apprentice and preparing to advance to the first level of sorcerer. The difference in cell activity was not too great, which would cause this result.

However, given the current situation, it would be relatively simpler to cultivate a new arm for Sasuke using Urashiki's cells. All that's needed is to reduce the activity of Urashiki's cells and then fuse them with Sasuke's cells.

As for Naruto, the cells taken from the living Naruto and the cells from the body tissue left by the already dead Urashiki were both highly active, and in their head-to-head confrontation, they were almost completely consumed by each other.

Thinking of this, Issei seemed to have thought of something and took out a storage scroll from his pocket.

He took out a transparent glass bottle from the scroll, which was still more than half full of blood. It was the blood of his true form, Bai Yu, which he had previously injected into An Lushan.

While his current energy level is certainly not as high as that of the Otsutsuki clan, in terms of bloodline purity and cell activity, the gap between him and these Otsutsuki clan members should not be particularly large.

Unlike Naruto, Urashiki's original body, which has been promoted to the second level "Spirit Summoner", has a high degree of cell compatibility. Therefore, Issei is prepared to try it out and see what the reaction would be if Urashiki's cells were fused with the original body's cells.

"This is?"

Orochimaru asked, puzzled.

“This is Shiraha’s blood,” Issei replied, then took out another piece of Urashiki’s body tissue and dripped his own blood onto it.

"Huh?" Orochimaru and Kabuto suddenly widened their eyes.

As soon as Bai Yu's blood dripped onto it, it seemed to come alive, then completely covered the surface of the Pu Shi meat slices like a thin film, enveloping them entirely.

Urashiki's body tissues seemed to have encountered their nemesis, rapidly shrinking in his bloodstream.

At this moment, Issei dripped in more of Shiraha's blood, while Urashiki's body tissues were completely devoured under the siege of Shiraha's cells.

"As expected!" Issei's eyes lit up as he sensed a slight increase in the activity of the cells in Shirayu's blood. He had a guess in his mind: if he could bring back a living Otsutsuki and have his main body experiment and absorb it, the process of advancing to the third level of "Summoning Sorcerer" would be greatly shortened.

This trip to another world was worthwhile just for the large amount of information we obtained, not to mention the acquisition of the Otsutsuki clan's body tissues and many experimental techniques.

"What kind of creature's blood is this? It can actually devour the cells of the Otsutsuki clan," Orochimaru couldn't help but ask.

"More important than that is helping Sasuke cultivate a new arm." Issei kept everyone in suspense for a moment, then changed the subject, saying, "I already have a general idea, and what we need now is a fully equipped laboratory."

"My base should be able to meet your needs in this regard."

Orochimaru responded that he had been exonerated because of his outstanding contributions in the Fourth Shinobi World War. Although he was now living a semi-closed life under Yamato's surveillance, he was still able to receive financial support from Konoha.

Therefore, his laboratory was even more complete than Konoha's, since Konoha had many experiments that were not supported for in-depth research, while Orochimaru had no such concerns.

"Then what are we waiting for? Let's go!"

Yicheng nodded and carefully put away all the experimental materials.

The group left the Anbu warehouse and headed towards Orochimaru's stronghold.

"Issei, I have to stay in the village. Sasuke can go with you." When they arrived at the gate of Konoha Village, Naruto said that he would stay behind to guard the village.

"Okay, wait for my good news." Issei understood, after all, Naruto was the Seventh Hokage and had to stay in Konoha.

The subsequent cell experiments and cell culture cannot be completed in a short time; for now, Sasuke's assistance in the experiments is sufficient.

Naruto returned to the village only after their figures disappeared into the forest.

At the same time, voices suddenly came from deep within the dense forest.