The Secret of the Eternal Eye

Izuna was injured? Uchiha Yuan was somewhat shocked, though it was also within his expectations.

In the original history of Naruto, Izuna had indeed died from untreatable severe injuries. Uchiha Yuan knew that well. What shocked him was that, even with all the ninjutsu intelligence and logistical supplies he had provided, history had still followed its original course.

"Take me to him!"

At the third-floor hospital in the Clan Land, Uchiha Yuan saw Madara standing outside the glass doors, still wearing his armor.

"What happened? Was it Tobirama?"

"Yeah!" Madara's expression was grim. His heart was a tangled mess—on one side was his brother, on the other his dream. Things had somehow reached this point. "I didn't see exactly what happened. I don't know what technique Senju Tobirama used."

Uchiha Yuan nodded. If he was right, it was probably still the Flying Thunder God. Izuna had ultimately failed to escape this calamity.

At that moment, the door opened, and a clan member in a white coat came out drenched in sweat.

"Clan Head, Acting Clan Head, Lord Yuan, he..."

Uchiha Yuan ignored him. He had to see Izuna's injuries himself. Madara followed closely behind. Izuna lay on the hospital bed, pale-faced and frail, a sight that made one's heart tighten.

Uchiha Yuan gestured, and the perceptive clan member immediately handed him the report.

"Hmm... half his intestines have been burned away, his spleen has ruptured, his stomach is torn... his internal organs are a complete mess..."

Just hearing it left Madara's mind in turmoil.

"Yuan! Can he be saved or not?!"

Uchiha Yuan did not answer as he studied the report. He walked to the bedside and looked at his foolish second brother, who was usually the best at livening the mood. It would have been impossible not to feel heartbroken.

"With current medical technology, organ transplants are impossible. And Second Brother has suffered injuries in multiple places. You could say he would need even more replaced."

"...So there's no saving him?"

"I'll check his condition first."

Uchiha Yuan extended both hands, covering them in Chakra as he sent it into Izuna's body. He slowly closed his eyes and felt the flow of Chakra.

"What's going on? Why is Izuna's cellular activity so low? Didn't he learn my Chakra Breathing Method?"

Madara opened his mouth, somewhat regretful that he had not pushed Izuna harder.

"Izuna said that technique required too much control, so he never learned it."

"His cellular activity isn't sufficient. He can't even endure the process of selecting compatible organs. Under the current conditions... there's nothing I can do."

Izuna had been pierced through by the Thunder God Sword. Most of the tissue around the wound had been carbonized and necrotized. To treat him, nearly all of his internal organs would have to be replaced.

Izuna had no secret self-healing technique. The Uchiha Clan had never excelled physically; at most, they were more agile. Moreover, Uchiha Yuan had only established the medical department a few years ago. Technology for replacing organs had not even been developed yet, let alone an organ bank.

"Cough... cough!"

As they spoke, a flush rose on Izuna's face, and his breathing briefly steadied.

"Where... am I?"

"Second Brother... you're home."

Madara silently walked to the other side of the bed and grasped Izuna's icy hand, unable to stop trembling.

"Second Brother!"

"...Big Brother, don't cry. Third Brother... I..."

Tears began to flow from Uchiha Yuan's eyes on their own. Was this outcome truly what he wanted? Looking at Izuna, who was having a final burst of life and lingering on the brink of death, he could no longer tell.

"Second Brother, say whatever you want to say. We're listening."

"Cough, cough! Tobirama... that bastard, cough, cough! Tobirama mastered the Flying Thunder God technique! You must... be careful. He's a sinister and cunning..."

"Mm-hmm, I'll definitely avenge you."

"...No, Third Brother, that's not what I meant."

"I understand. I'll preserve Tobirama's head and let you see it with your own eyes."

"..."

Izuna nodded with his mouth half-open, then slowly turned his head to look at Madara.

"Big Brother, I know your eyes... are almost blind. We have the same eyes. You can't fool me. Big Brother... I'll leave my eyes... to you."

After entrusting his final words, Izuna's eyes nearly closed. He felt unbearably sleepy, but Uchiha Yuan forcefully poured a wave of Chakra into him, stabilizing his heart meridians.

"Second Brother, don't die yet. I still have something to ask you."

"..."

Madara: ...

Izuna pursed his lips and said dryly:

"Ask."

"It's like this. If you had a chance to be revived in the future, but it might be decades from now, what would you think?"

"Revived?"

"Yes!"

Madara also looked up at Uchiha Yuan. This third brother of his always said astonishing things.

"Forget it. Once you're dead, you're dead. What meaning is there in coming back to life?"

"All right, I'll take that as your agreement."

"Huh? I..."

Before Izuna could object, Uchiha Yuan had already cut off the connection. Then he raised his head and said to Madara:

"Change the eyes while they're fresh. Are we doing surgery or what?"

"Sigh... no need. I learned your technique."

Madara sighed and raised a hand to touch his eyes. The Mangekyō Sharingan's blindness was inseparable from his uncontrolled overuse. Even if he replaced them with Izuna's eyes, how long could they last?

"Big Brother, don't hesitate. Replace them while they're fresh so I can preserve Second Brother's body as soon as possible."

"...Do you really have a way to revive him?"

"I can't guarantee it. I can only say there's a chance. Besides, even if revival proves impossible, I can still be buried beside Second Brother when the time comes, right?"

"All right."

After saying that, Madara wiped at his eyes with one hand, dug, and pulled out a pair of eyeballs himself. Uchiha Yuan watched closely. No blood spilled from this manual eye removal, which was a little unscientific, but he still offered guidance:

"When removing Second Brother's eyes, use Chakra to seal the blood vessels first. That way, the eyes won't be damaged by stress stimulation."

Madara nodded and raised his other hand to Izuna's face. After hesitating for a moment, he removed the eyes anyway. But Izuna was already dead, and blood splashed all over Madara's face when the eyeballs were dug out. That was scientific again.

Even without eyes, Madara had no trouble observing his surroundings. After taking Izuna's eyeballs, he placed them into his empty eye sockets, gave them another wipe, and the eye replacement was complete.

"This method is really convenient~ Too bad it probably can't be used clinically."

"Yuan, eyes aren't actually controlled by the brain. They only have a one-way nerve for transmitting information, so they aren't difficult to operate on."

"So that's why those two forbidden techniques can't be spread around?"

"Right. If people with ill intentions learned of them, it would undoubtedly be a disaster for the Uchiha Clan."

Hearing that, Uchiha Yuan once again pictured Danzo with an entire arm covered in eyes. He wondered whether he should kill Danzo in the cradle while he was still a brat.

"I wonder whether my Mangekyō Sharingan has changed after receiving Izuna's eyes..."

Madara slowly opened his eyes and activated the Mangekyō Sharingan, but his eyes began spinning uncontrollably. He was slightly surprised by the sudden change, but he soon felt that the Mangekyō Sharingan was developing in a positive direction.

"Big Brother?"

Hearing him, Madara raised his head and looked at Uchiha Yuan. The Mangekyō Sharingan in his pupils seemed different from before. It was also Uchiha Yuan's first time seeing an Eternal Mangekyō Sharingan in person. His startled expression was no act; he was genuinely astonished.

"Big Brother, do you feel anything different?"

"I... my Mangekyō Sharingan abilities haven't changed! Also... my vision has recovered, and I can clearly feel my ocular power! It's recovering on its own!"

"What? Its ocular power is recovering on its own?!"

"That's right!"

Madara summoned a Susanoo arm in the open space beside them. He felt his ocular power drain away, then sensed a warm current. His eyes really were restoring their ocular power on their own!