Naruto: Dual-Pupil Uchiha

On the experimental table, Genya's cells and the Uzumaki cells were devouring each other in the petri dish.

It was actually Genya's cells devouring the Uzumaki cells, and they were doing so quickly.

Genya's cells quickly consumed the Uzumaki cells entirely, and after the transformation, the cells seemed to have become contagious, consuming the remaining cells and then dividing!

Soon, only the transformed super cells remained in the petri dish.

These super cells had fully absorbed the power of the Uzumaki cells. They could independently absorb chakra, and the cells became more active. Even individual cells had healing abilities!

Genya's eyes lit up. If he really managed to fuse these cells, he already predicted that he would become even stronger in the future.

"Hikari, now that this cell serum has been successfully developed, does this mean others could adapt to it as well?" Genya asked curiously, his eyes filled with anticipation.

In the world of Naruto, bloodlines were incredibly important. If everyone could fuse with Uzumaki cells, it might even lead to the creation of a powerful clan — a clan that Genya himself could build.

Hikari shook her head, "Genya-sama, your cells are very special. It's easy for them to absorb and fuse with the traits of other cells. But for others, it's a bit more difficult."

"I see!" Genya nodded, not expecting too much.

Hikari noticed Genya's disappointment and added, "However, in my recent experiments, I found that the green chakra within me not only enhances cell activity, but also improves cell fusion. I will keep researching."

"Good!" Genya nodded. "In a few days, I'll send some blood samples over. Take your time with the research, don't rush."

Hikari nodded solemnly.

"When can I merge with the Uzumaki cell serum?" Genya asked Hikari, eager to try. If it were possible, he wanted to merge with the Uzumaki cells right now.

"Genya-sama, I've just refined the perfect cells that fit your body, but it will take three more days to turn it into a serum," Hikari said after some thought.

"Alright, I'll wait for three days then," Genya agreed.

The next three days passed without incident, and Genya enjoyed the peace and quiet.

For the past three days, Genya had mostly stayed in the Uchiha Hospital, hardly leaving at all!

Above was the hospital, and below was the silent laboratory. The two were clearly separated.

On the third day at noon, the sun was shining brightly, but the laboratory downstairs remained dim, lit only by the harsh white incandescent lights, giving the space a chilly feel.

"Genya-sama, the cell serum has been successfully prepared!" Hikari, holding a syringe, had a heavy expression on her face. She had tested this serum countless times over the past three days, but she still felt uneasy. After all, it had only been tested in cells, but this time, it was to be injected directly into Genya-sama Genya's body.

Any small mistake could put him in grave danger.

"Don't worry. You don't need to be so tense!" Genya noticed Hikari's nervousness and patted her head. "Do you not trust me?"

"Yes, Genya-sama will be fine!" Hikari nodded seriously but was still nervous.

The whole basement was eerily silent. Genya could even hear Hikari's uneasy heartbeat. He held her hand and gave her an encouraging look, signaling her to proceed.

With Genya's steady gaze, Hikari gulped and injected the serum into his arm, slowly pushing it in.

At first, there was no problem. But as the serum was gradually injected, Genya began to feel his cells becoming restless, attempting to devour the foreign substance. 

As soon as Hikari finished the injection, Genya could see the spot where the serum had been injected start to swell, his muscles eagerly pulsing, absorbing the serum.

Within moments, the serum had been completely absorbed by his cells.

He could feel his arm's cells undergoing a significant change, as though they had advanced to a higher level, leaving him with a strange feeling.

Huh?

Just as he sighed in relief, an intense, searing pain suddenly shot through his arm, causing his brows to furrow involuntarily.

By all logic, with his physique, normal pain shouldn't even reach his pain receptors. But this time, it was excruciating, bone-deep pain!

"Genya-sama, what's wrong?" Hikari had been watching Genya closely. As soon as she noticed something was off with his expression, she rushed over to check on him, fearing something might happen.

Genya also activated his Dual Pupil, using it to peer inside his body!

He immediately discovered that the cells that had evolved earlier were now devouring other cells and dividing. 

The old cells were being consumed, and new ones were being created? 

This was a correct evolution!

"Genya-sama, the cells are devouring the ones inside your body and dividing. We succeeded, but the speed of this cell division and consumption is too fast. I'm afraid you…" Hikari looked at her Genya-sama with concern, but couldn't bring herself to finish the sentence.

She placed her palm on Genya's body, trying to stop the rapid division of the cells!

If everything had gone according to her previous plans, the cells injected into Genya's body would slowly assimilate the cells in the rest of his body, starting from his arm. 

This process could take one to two months, or even three to four months! 

But Genya's cells were special. Their consumption and division were happening at such an alarming rate, it was almost like a slow and painful execution.

If it continued this way, by the time the midnight hour arrived, Genya's cells would completely assimilate the rest of his body. But there was a catch: Genya would have to endure a pain a hundred times worse than any normal person could handle!

"I'm fine. Let the cells continue to divide and consume," Genya said, noticing Hikari's hesitation. He gritted his teeth and spoke with determination. 

He knew that this was the path to a beneficial transformation, and if he could endure, he would succeed!

He would become stronger!

"I understand, Genya-sama, I understand. I will help you!" Hikari, seeing Genya twitching from the pain, felt powerless. She could only use her healing ninjutsu desperately to alleviate his suffering.

Time passed, second by second. 

But at that moment, every second felt like an eternity to Genya. The transformed cells spread from the area on his shoulder and rapidly expanded, moving outward.

The pain was so unbearable that Genya could only grit his teeth, his eyes turning bloodshot! 

The agony was overwhelming, to the point that he could barely stay conscious.

"Genya-sama, it's my fault. I never expected you to endure such immense pain!"

"If only I could conduct a few more experiments, I could slow down the rate at which these cells are devouring!" 

"I'm sorry, Genya-sama, I'm so sorry, sob~~!" 

Hikari looked at the pained Genya and held him tightly in her arms, using her own chakra to soothe his body and ease some of his pain. 

"Don't cry, silly girl. The places where I've transformed don't hurt anymore. Your potion worked!" Genya wiped away Hikari's tears while enduring the pain. He then said, "If you keep making improvements, won't the cells I've fused with become weaker?" 

"Stop crying, it will be over soon... very soon."

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