When Naruto and Young Obito experienced Naruto Uzumaki's life in the main storyline world, they had heard Madara Uchiha say with their own ears that all of this had been his plan.
From the moment Madara Uchiha chose Obito Uchiha, who was full of love for the Ninja World, his comrades, his clan, and Konoha, Kakashi and Rin had already become sacrifices meant to manipulate Obito Uchiha.
Obito Uchiha in the footage had no idea what was about to happen.
The unease in his heart grew stronger and stronger, and at that moment, rain began to fall.
He kept speeding up.
Lightning flashed and thunder roared.
The empty eye socket where the eye he had given to Kakashi once sat suddenly began to ache for no reason.
An image that made him, and everyone watching the footage, widen their eyes in shock suddenly appeared across the entire sky.
["Don't show me weird images!"]
In the footage, Obito Uchiha clutched his left eye, which had lost its eyeball, and cursed.
["I'm almost there!"]
As he spoke, he had already rushed out of the forest and arrived in a clearing amid the pouring rain.
Just as Young Kakashi was using Lightning Release: Chidori against the enemy, Rin Nohara, his comrade, suddenly rushed out. She used his hand to end her own life.
And that scene...
Less than thirty meters away, Young Obito Uchiha, who had desperately rushed over to save them, saw it clearly.
So Obito had been there back then.
Even the sound of rain disappeared.
Everything fell silent.
It took a long time before Adult Kakashi finally reacted. His lips trembled as he said to Adult Obito beside him, "So you were there back then..."
Obito Uchiha did not answer him. He only stared blankly up at the footage in the sky.
Inside the footage, rain poured down in sheets. Outside, the real sky had grown darker with the passage of time.
The footage was embedded in the night sky.
Lightning flashed through the curtain of rain and illuminated reality.
["Ka... Kakashi..."]
In the footage, Young Kakashi's hand was still buried in Rin Nohara's chest. Adult Kakashi still remembered the sticky feeling on his hand, the sensation that would not wash away for a very long time.
Adult Kakashi's throat moved.
Only now, seeing it with his own eyes, did he finally understand where Obito Uchiha's hatred and despair had come from.
The people watching were stunned.
For those watching a "movie" for the first time, where was the triumphant comeback of the dead-last protagonist they had been eagerly expecting?!
Where was the heroic rescue they had been waiting for?!
Why?
Why had that brown-haired girl named Rin Nohara been killed by that boy named Kakashi?!
They had seen it. More precisely, they had seen the girl throw herself into the Lightning Release ninjutsu of the boy desperately trying to save her. Both of them had fought so hard to save her! So why did she choose to kill herself in the end?! What had those Kirigakure ninjas done to her?!
"Rin! Kakashi! Stop watching!"
Although Young Obito himself had once awakened his eyes after being stimulated by this scene in a dream, he still did not forget to try to stop the silver-haired boy and brown-haired girl beside him, urging them not to keep watching.
But neither of them listened.
They wanted to know what happened next.
["Thud."]
That was the first sound after the footage entered a pale, silent void.
Rin Nohara, whose heart had been destroyed, fell to the ground.
Fugaku Uchiha's eyes widened. He watched as the two tomoe in Obito Uchiha's Sharingan twisted in the chaos.
The right eye in Obito Uchiha's socket and the left eye in Kakashi Hatake's socket changed at the exact same time.
The special chakra born from utter despair flowed toward the nerves at the back of Obito Uchiha's eye. From a distance of dozens of meters, it drove the Sharingan in Kakashi's eye to change as well.
In the chaos, it swayed and transformed into a new pattern.
The Mangekyō Sharingan.
"Two tomoe directly turning into the Mangekyō Sharingan?!"
Tajima Uchiha was astonished. Even he had never seen anything like this.
Like him, the Tajima Uchiha inside the Uchiha Clan compound and the Uchiha Clan ninjas also found it hard to believe that someone could awaken both eyes straight to two tomoe, then skip three tomoe altogether and become the Mangekyō Sharingan.
Only Young Madara Uchiha and his younger brothers quietly watched the footage, worried about the despair in Obito Uchiha's heart at that moment.
"So..." Naruto stared at the footage in surprise. "This is why Obito Uchiha in our world awakened the Mangekyō Sharingan."
Young Obito awakened two tomoe because he saw Rin's death. He awakened the Mangekyō Sharingan after learning that he was the "Masked Man," unable to face the pain of what had happened to Minato-sensei's family.
Adult Obito awakened two tomoe in order to protect Kakashi. He awakened the Mangekyō Sharingan after seeing Kakashi kill Rin, losing the two most important things to him all at once and having his faith collapse.
His trust in Kakashi, and his dependence on Rin.
After losing both at the same time, only darkness remained in Obito's heart. Not a single ray of sunlight could shine through.
In the footage.
White Zetsu wrapped around Obito Uchiha's head, leaving only one hole on the right side. In that red Sharingan, madness hid behind the windmill-like pattern of the Mangekyō Sharingan.
Kakashi fainted.
Obito, who had turned into the Masked Man, let out a monster-like roar.
["Aaaaaah!!!"]
Naruto, Sasuke, and Sakura of Team Kakashi said nothing. Even their hearts clenched watching it.
That hysterical roar sent chills down everyone's spine.
At that moment, Young Obito no longer had the energy to think about how Kakashi and Rin beside him felt.
It was as though Adult Obito's sorrow had been transmitted to him.
That despair.
It reminded him of the moment he learned that he was the Masked Man, when the painful images of Kushina-nee and Minato-sensei before their deaths flashed before his eyes, along with the furious hatred that had made him want to kill himself.
If the two had anything in common...
It was that they hated, yet were powerless and had nowhere to vent it.
["This place..."]
["What exactly is this place?"]
Normally, Obito's roar could not possibly have gone unnoticed by Kirigakure.
Those were all elites of Kirigakure's ANBU. Seeing that the only reinforcement was a strange figure who was not even especially tall, they did not take him seriously.
But they never imagined that what awaited them next...
Was a one-sided slaughter.
["I won't accept it!"]
At that moment, the hundred clans of the Ninja World were all watching the footage in the sky.
Seeing the Wood Release Kekkei Genkai burst uncontrollably from Obito's body, the ninjas of the major clans were all shocked.
"Uchiha?! Why would an Uchiha have Senju Wood Release?!"
"The shuriken actually passed through his body?!"
"What's going on?!"
"It seems to be his special Dōjutsu! It isn't an ordinary Sharingan!"
["Who would believe a world like this is real?!"]
In the footage, Obito Uchiha attacked like a monster.
Constantly absorbing chakra from White Zetsu's body and converting it into his own strength, the already maddened Obito Uchiha charged at the more than fifty Kirigakure ANBU before him.
["Don't underestimate our Bloody Mist Village!"]
The ANBU who spoke drew his sword as he said it, but the monster moved like a ghost and touched his body.
The next instant, everyone saw wooden spikes burst out of the Kirigakure ANBU's back and knew he had been pierced through by Wood Release.
Blood splattered across White Zetsu's armor and the black robe Obito Uchiha had taken from Madara.
It was that insane.
Rin, Kakashi, Naruto, Sasuke, Sakura, and even Young Obito Uchiha himself were all frozen in shock.
They had never seen Obito like this.
If anything could describe Obito's state...
It was the Nine-Tails' power bursting out when Naruto thought Sasuke had died.
It was Naruto angrily donning the demon fox cloak when he heard Orochimaru speak of Sasuke as though he were one of his possessions.
That kind of...
Terrifying.
And yet...
Pitiful.
Filled with...
Despair.
This was everything Obito Uchiha of the mission scroll world had personally experienced.
When the blades in the hands of the other Kirigakure ninjas stabbed toward him, he used Intangibility and made their blades stab their own comrades instead.
He leapt into the air, and the instant he released Intangibility, he killed the enemies with one strike.
Wooden spikes grew from his hands.
He hurled them viciously into the Kirigakure ninjas.
He formed hand seals, controlling the chakra within the wooden spikes from a distance.
The wooden spikes, which had not been fatal at first, exploded inside the Kirigakure ninjas' bodies. Like eerie plants from the underworld, after feeding on human blood and internal organs, they suddenly grew wildly, taking over their hosts' entire bodies.
["That monster's techniques are too bizarre!"]
["Retreat! Retreat now!"]
["At least recover that woman's corpse! We can't let 'that thing' fall into enemy hands!"]
The ninja clans of the Warring States Period noticed it. The "thing" the Kirigakure ninjas mentioned was likely something they had placed inside the girl named Rin Nohara, using her as a vessel. The only things worthy of so many ninjas doing this were the monsters known as "Natural Disasters."
In the footage, more than fifty Kirigakure ANBU stood before Obito Uchiha.
And behind them were the unconscious Kakashi and Rin, whose heart was gone.
He gave up all attacks.
He fully entered Intangibility.
Obito Uchiha rushed straight toward Rin and Kakashi.
Anyone who tried to touch Rin or Kakashi was killed by that Wood Release technique.
At the time, Obito Uchiha could not hear White Zetsu's thoughts.
But now, as he watched the footage, Adult Obito finally knew that when he acted back then, White Zetsu had not been helping him.
It had been watching him under the intentions of Black Zetsu and Madara.
["He suddenly used Wood Release: Cutting Technique?!"]
["Obito, I know why Madara chose you now!"]
["Only you can become the new Madara Uchiha! For the Eye of the Moon Plan, sacrifice everything!"]
Everyone watching was stunned.
Obito Uchiha, who had failed to save his comrade in time, had turned into a monster. A madman. Beside the girl's corpse, he slaughtered and tore apart the enemy like a wild beast.
Even after the enemies were dead, he did not stop.
That technique, Wood Release: Revolt of Hell, nearly dyed even the moon in the sky red with blood.
The sheer madness left everyone watching unable to say a word.
In Fugaku Uchiha's heart, an especially uneasy premonition rose.
At this moment, he still did not know what the Eye of the Moon was, nor did he know about the Fourth Shinobi World War. He did not even know who had released the Nine-Tails and caused the death of the Fourth Hokage.
From where he stood, he could see the backs of Adult Kakashi and Adult Obito as they looked up at the footage in the sky.
He could see many ordinary civilians covering their eyes, no longer daring to watch. He could hear Wood Release: Revolt of Hell grinding the bones and organs of those Kirigakure ninjas to pieces like a meat grinder, turning the place into purgatory, with minced flesh and organs everywhere, and blood winding across the ground like a river.
As the Clan Head of the Uchiha Clan, how could he not know?
When an Uchiha lost love and fell into the deepest, darkest moment, just how terrifying could they become?
Young Obito looked at Adult Obito's back.
He could not imagine losing Rin and Kakashi, nor could he imagine turning into someone like him.
But reality was exactly that.
The "Obito Uchiha" from Naruto's world had lost everything. Under Black Zetsu, White Zetsu, and Madara Uchiha's scheme, he had become the next Madara Uchiha. For the sake of the Eye of the Moon Plan, he betrayed the village, killed his teacher, and slaughtered his clan...
Precisely because he was Obito Uchiha, no one understood better than Young Obito the feeling of losing everything, only to discover in the end that it had all been a trap.
Kill the Masked Man.
Save the Masked Man.
If this were a choice question…
…
It's building up! Young Obito is about to cause trouble!
Both the manga and the anime say here, "Don't underestimate the Bloody Mist Village," which is enough to prove that when Obito used his Sharingan to control Yagura Karatachi, Kirigakure already had tyrannical rule and the title of the Bloody Mist Village.
But I think this likely has something to do with Madara Uchiha too. Maybe he was dissatisfied with Hashirama's Konoha, so he used the Sharingan to control Kirigakure and tried to prove that the village he governed was stronger and better. At the same time, the fact that Kirigakure ANBU obeyed Madara Uchiha's orders to abduct Rin and make her a Jinchūriki also supports that analysis.