transmigrated as Obito

After everything that had happened with Toneri Ōtsutsuki, Obito Uchiha realized something that deeply troubled him: the Rinnegan weakened him. Although it was an eye of incalculable power, he couldn't fully exploit its potential. Every time he used it, he felt his body strain, as if the eye were too much for him. It wasn't like when Madara or Nagato used it; something was missing.

—I need to recover my other eye —murmured Obito, as he walked along a lonely path—. Kakashi hasn't given me any indication that it still exists... Did he destroy it? —he sighed, pausing for a moment—. I hope not. But if I recover it, what will I do with this Rinnegan? I can't waste such great power.

Obito fell silent, reflecting. He knew the Rinnegan was an invaluable tool, but he also understood that he couldn't use it to its fullest without risking his own life. He needed a solution, a way to balance his power without sacrificing his body.

Suddenly, a memory crossed his mind. The Ōtsutsuki, powerful beings who had left an indelible mark on the ninja world. Momoshiki and Urashiki, both had eyes in their hands, something that had always seemed strange but fascinating to him. And then there was Danzo, with his arm full of Sharingan. That arm, created by Orochimaru, was capable of supporting multiple eyes without collapsing.

—Danzo's arm... —murmured Obito, looking at his own arm—. This arm is from one of the Zetsu. What's different about it? The best thing is to go there directly.

Without wasting any more time, Obito activated his Kamui, teleporting to one of the hideouts the original Obito had used. It was a secret place, hidden from most, even from Obito's closest allies. A place where time seemed to have stood still.

Upon appearing in the large cave, Obito was met with a desolate but familiar scene. The air was thick with dust, and the silence was almost absolute. The walls of the cave were lined with shelves filled with jars containing eyes, hundreds of them, glowing faintly in the darkness.

—Just as I thought —said Obito, with a mix of satisfaction and nostalgia—. No one knows about this place. It's just as intact.

He walked to the center of the cave, where a rusty stretcher held the body of Danzo Shimura. Obito stopped in front of it, observing carefully. Something didn't add up.

—How strange —murmured Obito, leaning in to examine the body—. After five years, his body hasn't decomposed at all.

It was as if time hadn't passed for Danzo. His skin was pale but intact, and his right arm, the one containing the Sharingan, seemed as vital as the day he had died. Obito extended his hand, feeling the flow of chakra still emanating from the arm.

—This arm... —said Obito, with a mix of awe and greed—. It has an impressive amount of chakra. It's perfect.

Obito fell silent, contemplating his options. He knew transplanting Danzo's arm wouldn't be an easy task, but he also understood it was the only way to balance the power of the Rinnegan without weakening himself. Besides, the Zetsu arm he had now wasn't enough; he needed something more.

—I'll transplant it —Obito decided, firmly—. There's no other option.

However, a part of him still felt a slight terror at the thought of ripping off his own arm. It wasn't the pain that worried him, but the act itself. Even though he had been through worse, the idea of mutilating himself voluntarily was still unsettling.

With a quick motion, Obito pulled out a kunai and, without hesitation, cut off his right arm in a clean and precise motion. He expected to feel unbearable pain, but to his surprise, he felt nothing.

—AHHHHH!... Wait, it didn't hurt —said Obito, looking at his severed arm in disbelief—. Why didn't it hurt? Well, it doesn't matter.

Obito didn't have time for questions. With determination, he took Danzo's arm and began the transplant process. He knew this act would change everything, but he also understood it was necessary. The power he would gain would be invaluable, and with it, he could protect the world from threats like the Ōtsutsuki.

Once Danzo's arm was in place, Obito felt a wave of energy course through his body. The wound began to heal on its own, as if the Hashirama cells in the arm were accelerating his regeneration.

—How strange —murmured Obito, moving his newly transplanted arm—. It must be the Hashirama cells. But... why did the face of Hashirama on the shoulder disappear?

Obito paused to reflect. Apparently, his body had a much greater affinity with Hashirama's cells than Danzo's. After all, his body was almost entirely composed of those cells, and now, with this new arm, that connection had grown even stronger.

—I feel much better with this arm —said Obito, extending his hand and feeling his chakra flow more intensely—. My chakra has increased considerably, and I feel like I can control the Wood Release much more easily.

To test his new power, Obito focused his chakra, and in an instant, large tree trunks began to grow around him, destroying everything except the large collection of Sharingan on the cave wall.

—If I have this in my power —said Obito, looking at the eyes glowing in the darkness—, I have no reason to waste all these Sharingan.

He walked over to the shelves and began placing the Sharingan one by one in his new arm. Although he felt a great weight in his body, he gradually grew accustomed to the sensation.

—Even though they consume a lot of chakra, having ten Sharingan in one arm is impressive —murmured Obito—. I wonder what would happen if I put the Rinnegan in this arm.

However, Obito knew he had to be cautious. He wasn't the original owner of those eyes, and accessing abilities like Limbo would be nearly impossible without Madara's DNA.

—Limbo would be amazing —said Obito, thinking aloud—, but I doubt there's a way to achieve it. Unless...

Suddenly, a thought crossed his mind. Danzo's arm was made from the cells of Shin, an experiment by Orochimaru whose body was capable of accepting any type of cell. If Obito could obtain Madara's DNA, maybe he could access that power.

—But who would have Madara's DNA? —Obito wondered—. Most likely, the village destroyed it, or Kabuto has it. He was the one who summoned Madara during the war.

Obito sighed, knowing that asking Kabuto for help wasn't a viable option. He also couldn't turn to Kakashi; he would distrust him, and Obito couldn't risk losing what he had worked so hard to regain.

—I can't let the entire village turn against me again —said Obito, with determination—. I need to grow stronger, prepare for what's coming. Or maybe... I could destroy them now, but there are too many. I can't do it alone. The best thing is to wait, keep growing stronger, and maybe... start a family.

As Obito left the cave, his mind was filled with plans and doubts. He knew the path he had chosen wouldn't be easy, but he also understood it was necessary. With his new arm and the power of the Sharingan, he was closer than ever to achieving his goal.

—The world isn't ready for what's coming —murmured Obito, looking toward the horizon—. But I will be.

And so, with new power and unshakable determination, Obito prepared to face whatever the future held. He knew the battles to come would be harder than anything he had faced before, but he was sure of one thing: he wouldn't stop until he ensured the world was safe.