"Itachi Uchiha, what exactly are you trying to do!"
The Mangekyo Sharingan in Danzo Shimura's eye socket spun wildly. He couldn't even tell if this Tsukuyomi world was ninjutsu or genjutsu. Most importantly, how long would this jutsu last?
No one could remain calm after seeing their own head cut off, especially when the fallen heads were piling up on a table, all speaking in unison.
"In the world of Tsukuyomi, everything is under my control."
Itachi Uchiha once again swung the sword in his hand, slicing off another of Danzo's heads. "Consider this a gift, Lord Danzo," he continued coldly, "for guiding me to kill my own clan. I will make you personally feel the pain of losing your life."
Countless Danzos grew new heads and looked down at the heads on the table, which spoke at the same time as him: "If it weren't for me, the Uchiha clan would have been wiped out completely!"
"There's no need to argue about that..." Itachi's eyes flashed, his Mangekyo Sharingan glowing faintly.
The blade turned.
This time, Itachi didn't cut off Danzo's head. Instead, he pressed the tip of the blade against Danzo's right eye. "After you took Shisui's Kotoamatsukami," he said coldly, "I swore that one day I would kill you."
"Hah!"
Danzo's face twisted in agony as he felt his right eye shatter. He felt it crack instantly, the blade piercing through into his brain. This was cruel torture.
He took a long breath, trying to ease the pain and think clearly. This had to be a high-level genjutsu. And if it was genjutsu, it couldn't last forever.
Standing beside him, Itachi Uchiha said something that made him despair: "The Tsukuyomi space will last for seventy-two hours..."
Danzo's spirit was on the verge of collapse. "..."
As a ninja, he had a good sense of time. From the beheading to his eye being stabbed, about ten minutes had passed. That meant he still had nearly three days of torture left to endure. For three days, he would have to continuously suffer Itachi's torment.
"Have you accepted the passage of time?"
Itachi swung his sword again, this time cutting off Danzo's arm. "But in this world," he said coldly, "all of time is controlled by me. The first second hasn't even passed... hmm?"
As the arm fell, Itachi sensed something strange about it. It contained the power of life. Although it was far weaker than the Yang Power Naruto Uzumaki had given him, it had similar properties.
Itachi raised his sword and cut open the arm, revealing pure white flesh and the densely packed Sharingan embedded within it. One of the Sharingan was already closed.
In an instant, Itachi understood. An arm that could bear so many Sharingan had to be made of something extraordinary. And Danzo had ignored the black flames of Amaterasu back in the underground base. He must have used the Sharingan on his arm as a medium for Izanagi. With this arm, Danzo could use Izanagi repeatedly to escape death, giving him a long period of invincibility.
"It seems you still have many secrets..."
The blade's light flashed again. This time, a long gash was cut across Danzo's chest, deep enough to expose the bone and the Reverse Four Symbols Sealing formula prepared on his skin.
A dismemberment began in the world of Tsukuyomi. Danzo's consciousness could only watch as Itachi cut his body apart. Endless pain stabbed at his mind, causing his spirit to break several times.
On the grassy field behind Konoha, only a single second had passed. Kisame Hoshigaki hadn't even reached Danzo's side when he saw the leader of Konoha's Root collapse to his knees, his spirit utterly broken.
The repeated torment of Tsukuyomi was not something a sixty-nine-year-old man could bear. Danzo's spirit simply couldn't support him enough to continue fighting. Even as his will screamed at him to hold on, he could only barely use his sword to prop himself up.
Just then, a black shape suddenly appeared in Danzo's line of sight.
A completely black crow flapped its wings, extended a sharp claw, and plucked Danzo's right eye from its socket.
Danzo wretchedly covered the empty socket, watching the crow fly away with his stolen eye. "A mere ninja crow..." he hissed.
After the torment of Tsukuyomi, Danzo couldn't mount any real resistance. He couldn't even deal with a crow, and Shisui's Mangekyo Sharingan was easily taken from him.
Itachi shifted his shoulder, allowing the crow to land on it. He reached out and took the eyeball from its claw.
"This is not my crow. It was left to me by Shisui." Itachi stroked the crow's feathers, looking into its own blood-red eyes. "I'm letting it reclaim the eye for its former master."
"Caw~" The crow cawed and preened its feathers.
Before his death, Shisui Uchiha had left Itachi two gifts: his only remaining Kotoamatsukami Mangekyo Sharingan, and his flock of summoned ninja crows.
Now, having left the Tsukuyomi space, Itachi could tell that the mentally broken Danzo was unable to perform any jutsu. He had sent the crow to retrieve the transplanted eye. As for what came next... he would personally collect the debt for the sins Danzo had committed.
Itachi gripped a kunai and rushed toward Danzo, raising it to cut off his arm. Even if Danzo could only sit and wait for death, Itachi would take back the eyes that belonged to his clansmen.
"Do you think you can kill me?"
Danzo looked at Itachi and suddenly pulled open his collar, revealing the sealing formula on his chest. It was the Reverse Four Symbols Sealing Technique, prepared long ago and ready to be activated at any moment.
As the leader of Root, Danzo knew his body held too many secrets. Neither the arm made of the First Hokage's cells nor the Kotoamatsukami could fall into enemy hands. Shisui's eye had been unexpectedly snatched away by the crow, but the arm absolutely could not fall into Itachi's hands. Danzo knew that the First Hokage's cells were a great help to a Mangekyo user, as they reduced the strain of using their visual powers and enhanced their abilities.
"Sorry, I prefer to keep everything under my control."
The Sharingan in Itachi's eyes glowed red, making Danzo's mind even more dazed. He couldn't tell if this was reality or another genjutsu.
Itachi shook his head, looking at the unmoving Danzo kneeling on the ground. He sighed softly, "Lord Danzo, without Shisui's Mangekyo Sharingan, how will you resist a Uchiha's genjutsu?"
As his voice fell, the kunai swung.
A white arm flew into the air.
-----
Bonus:
Kisame: Mr. Itachi, that summoned crow of yours is truly amazing...
Itachi: This crow isn't strong enough.
Kisame: It even plucked out Danzo's eye!
Itachi: No, no, it's still too useless.
Kisame: How strong a crow are you trying to raise?
Itachi: One that can shoot a Tailed Beast Bomb from its mouth.
Kisame: ...