Ninja World: I, Kisame Hoshigaki, am no longer human!

“…Tell me.” Obito sighed, speaking with a heavy heart.

“Look me in the eyes.”

As Madara spoke, his expression became extremely solemn, and he released a genjutsu on Obito.

He brought Obito into his illusion space and explained to him the principles of Infinite Tsukuyomi, as well as the insane yet grand Eye of the Moon plan.

The world of Infinite Tsukuyomi is a truly ideal world, free from war and strife, filled only with peace and happiness.

In the illusion space, Madara also taught Obito all of the Uchiha's forbidden techniques, Six Paths Techniques, and Yin-Yang Release Techniques.

After a period of time.

I promise you.

After digesting Madara's thoughts, Obito made a promise with burning eyes and took over Madara's mantle.

He didn't believe in Uchiha Madara, but he was interested in the world the latter described because he... wanted to create a world with Rin.

"very good."

Madara smiled with satisfaction, then ordered the spiked White Zetsu to come over and infused his will into the latter's body, turning half of the White Zetsu's body black.

Black Zetsu was "born" in this way.

Madara tells Obito that Black Zetsu is the embodiment of his will and will assist Obito in realizing the grand plan of the Eye of the Moon.

In addition, Madara also handed over the physical form of his consciousness—a black rod—to Obito.

Finally, he gave Obito some advice:

"Be very careful of Kisame Hoshigaki. I have a feeling he will be your greatest enemy. Remember, don't provoke him until you have enough power. Go to Amegakure and find Nagato first..."

After making these final arrangements, Madara Uchiha had no more regrets and, in front of Obito and Zetsu, pulled out his oxygen tube.

A legend has finally come to an end.

Obito retrieved Madara's Sharingan, buried Madara's body, and then took Madara's place, sitting in the huge wooden chair.

He became the new master of White Zetsu and Black Zetsu.

"Kisame Hoshigaki, you just wait..."

Sitting in the chair, Obito lowered his head, clenched his fists, and muttered to himself.

Kisame was his lifelong enemy.

He had already learned from Madara that Kisame had also stolen the Uchiha clan's ancestral Flame Fan. He was determined to kill Kisame and retrieve the fan.

But before that.

To be on the safe side, Obito decided to first heal his injuries and master the forbidden techniques and ninjutsu taught by Madara before heading to the Land of Rain to subdue Nagato, as Madara had instructed...

After that, I'll go find Kisame to settle the score.

the other side.

After escaping the coast of the Land of Fire, Kisame quickly crossed the ocean and returned to the Land of Water.

They meet up with Yuki-onna and Yokura in the town.

He began to tally the spoils.

First is Nohara Rin.

Kisame knew that Madara had planted a cursed seal on her heart, and her life or death was in his hands. Fortunately, after Rin was put into the Box of Elysium, Madara's chakra was temporarily isolated, preventing him from killing her through remote techniques.

Therefore, Kisame decided to let Rin sleep in the Box of Elysium for a while longer, until he estimated that Madara was almost dead and the cursed seal should have worn off.

Then we'll wake up Nohara Rin again.

Then there's Kakashi's Mangekyou Sharingan.

Kamui's two eyes, Obito's right eye is characterized by its ability to become intangible, allowing him to teleport himself to another dimension and avoid all attacks.

In addition, it can also transfer objects it comes into contact with.

Kakashi's left eye does not have the ability to intangible itself, but it can transfer specific targets to another dimension from a distance.

In general, this is a combination of near and far vision, defense and offense for the eyes.

Only when both eyes are combined can Kamui be considered complete, and to some extent, it can unleash power comparable to the Rinnegan.

Kisame stood in front of the mirror.

He took a deep breath, suddenly raised his left hand, and then... forcibly gouged out his left eye and put it into a test tube.

Then, he placed Kamui's left eye into his own eye socket and waited for it to fuse with the socket.

There are two methods for transplanting the Sharingan.

The first method relies on medical ninjutsu. For example, Kakashi's Sharingan was created through surgery performed by Rin-Dou Nohara.

In contrast, the second method is much simpler. It utilizes interstitial cells for automatic medical treatment and wound healing, thus enabling hot-swappable operation—simply remove and replace them for immediate use.

Although Kisame did not have Hashirama's cells, he was born with a strong physique, and his chakra reserves were on par with Nagato, a descendant of the "Senju + Uzumaki" lineage.

Therefore, not to mention the Sharingan, even the Rinnegan, his body could sustain it.

Moreover, after absorbing so many ninja tools, especially the Box of Bliss, Kisame's body was repeatedly strengthened, far exceeding the realm of ordinary people.

That's why he dared to try this simple and brutal method to transplant the Sharingan.

Kisame was not disappointed.

After Obito's Sharingan writhed in his eye socket for a while, it gradually merged with his own cells and became one with them.

Kisame felt a sharp pain in his left eye.

That's because that Sharingan is constantly consuming his chakra, and it can't be turned off; it's constantly consuming chakra 24 hours a day.

This is the drawback of transplanting the Sharingan.

In the original work, when Itachi fought Kakashi, he said to the latter: "Your body does not belong to our clan after all. You are destined not to be able to use the powerful Sharingan as skillfully as the Uchiha."

After Kakashi transplanted Obito's Sharingan, he spent a lot of effort and chakra adapting to the eye, which caused his strength to stagnate for a time.

For a long time, Kakashi only used the Sharingan's "copying" ability superficially, and never truly controlled it.

Kisame took Kakashi's eyes not only because of his own greed for the Sharingan, but also for another reason—

He wanted to see if Kakashi, without the Sharingan, would become the second Sakumo Hatake of Konoha, or even surpass him, after returning to his original growth path.

It's important to know that, in terms of talent, Kakashi is stronger than his father, Sakumo Hatake.

Kisame's actions might actually help Kakashi.

Of course, it will take time to prove this.

Nagato's situation was similar to Kakashi's.

Nagato's situation was even worse. Despite possessing the strongest physique, he was almost drained dry by the Rinnegan. Even so, he was still unable to unleash the true power of the Rinnegan.

Ultimately, it all comes down to bloodline. After all, this is a world dominated by the theory of bloodline.

Back to Kisame.

Obito's left eye may not significantly enhance Kisame's strength in the current situation, but it does make him feel uncomfortable.

Therefore, Kisame does not intend to use this eye for an extended period of time.

Anyway, he's physically strong enough that he can just insert it when he needs it and remove it when he doesn't, which is very convenient.

So, how can we make the most of this Sharingan?

Kisame just happened to have an idea.

"Oh!"

He activated the "Change" character shoulder mark on his right shoulder, instantly transforming into the appearance of another man.

The man was about 1.8 meters tall, wearing a red armor in the style of the Warring States period, with long, black, punk-style hair. He exuded a cool and arrogant aura between his brows; he was none other than Uchiha Madara in his youth.

Next, Kisame took out the Flame Fan, held it in his hand, and examined himself in the mirror.

Advanced transformation technique, Sharingan, plus the Uchiha clan's ancestral treasure, the Flame Fan.

At this moment, he is Uchiha Madara.

"Why can Obito impersonate Madara, but I, Kisame Hoshigaki, can't?"

Kisame muttered to himself, a wicked smile spreading across his face. Obito would never have imagined that Kisame had already impersonated Madara Uchiha before he could.

Kisame might be able to do something interesting by using his identity as "Uchiha Madara".

Therefore, he does not intend to devour the Flame Fan for the time being, for the same reason as Samehada—he wants to keep it so that it can play a greater role.

For the next period of time.

Kisame worked hard to adapt to the power of the Sharingan and figure out how to use it.

Seven days later.

By the river, Kisame sat cross-legged, meditating on a large rock.

Suddenly, he opened his left eye.

In that instant, the crimson three-tomoe shape in his left pupil rapidly blurred and gradually evolved into the shape of three red scythes.

Kaleidoscope Sharingan, activated.

The next second, Kisame looked over ten meters away, focusing his gaze on a pile of dog poop by the roadside, and activated his Kamui ability.

Swish.

The surrounding space distorted, sending the pile of dog poop into another dimension.

Successful.

Kisame's face lit up with joy.

He's not a piece of trash like Kakashi. His chakra reserves are dozens, even hundreds of times greater than Kakashi's, which allows him to adapt to and use the Sharingan much faster than the latter.

Even so, after activating Kamui, Kisame still shed a tear of blood from his left eye, and he also felt a wave of dizziness.

This is the price outsiders pay for using the Sharingan.

With Kisame's powerful physique and regenerative abilities, this price is nothing and he can easily bear it.