The world was a graveyard.

The Fourth Great Ninja War had ended, but victory had been hollow. Kaguya Ōtsutsuki, the moon goddess who had caused the calamity, was defeated. Naruto Uzumaki and Sasuke Uchiha, two souls bound by destiny and the reincarnations of Indra and Ashura, had fought side by side to end her reign of terror. But their victory had come at a devastating cost.

The moment Kaguya fell, the world she had once ruled was erased. Her final curse, born from her desperation, wiped out all life from the planet—leaving only Naruto and Sasuke to witness the desolation. The people they had fought for, the friends they had once protected—gone in an instant.

And in the midst of the wreckage, they stood. Two warriors, exhausted and broken, facing an empty world.

The days that followed blurred together in a haze of grief. For three years, they searched for a way to undo the destruction Kaguya had caused. Sasuke, his eyes always cold but now heavy with regret, helped Naruto develop a time-traveling jutsu. But every attempt to change the past failed. The barriers of time were too strong, and each failure only deepened their despair.

Naruto, who had always believed in the power of his will to overcome anything, felt his resolve waver. The despair was like a thick fog that clouded his every thought. Sasuke, too, had changed in those three years. His once fiery ambition had been extinguished, replaced by an eerie calm.

One day, as Naruto was trying once again to open a portal to the past, Sasuke approached him, a strange look in his eyes.

"Naruto," Sasuke spoke softly, almost as if he were considering his words carefully for the first time in a long while. "There is no changing the past. We both know that."

Naruto clenched his fists, frustration mounting. "I can't accept it, Sasuke! We can't just let everything we fought for be wiped away. We have to fix it."

Sasuke stood still, his expression unreadable, but there was a quiet resignation in his eyes. "I know that better than anyone. But we can't always change things, Naruto. Some things... they're beyond our control."

There was a long silence. Naruto struggled with the weight of Sasuke's words, the truth that he hadn't been ready to accept.

Then Sasuke stepped forward, his gaze locking with Naruto's.

"I've been searching for peace my whole life," Sasuke said, his voice steady. "But in the end, it's always been about atonement. I've done so many things... things I can never take back. And now, in the end, there's nothing left but this endless emptiness."

Naruto looked at him, confused. "What do you mean? You don't—"

"Sasuke," Sasuke interrupted, his voice firm yet calm, "I've made my peace. With everything I've done, with everything I've lost. I have nothing left to hold onto."

Naruto felt the world tilt beneath him. "No. You can't... Sasuke! You can't just give up like this. There's still so much to do. We can still—"

But Sasuke shook his head, cutting him off. "There's nothing more I can do. This is the only way."

Before Naruto could protest, Sasuke extended his hand, and the dark power of his Sharingan flared to life. He transferred a surge of chakra to Naruto, the energy coursing through him with an intensity that left him breathless. The power of Indra, the chakra of the Sage of the Six Paths, surged into Naruto's body, filling him with an overwhelming strength. But it wasn't just power—it was a transfer of something far more profound. Sasuke's regret, his acceptance, his final gift to the world.

"Sasuke," Naruto gasped, his voice trembling. "Don't do this. Don't—"

But Sasuke's expression was calm now, peaceful even. "You will carry this burden, Naruto. Take this power, and make sure you bring light back to the world. It's the only way to atone... for both of us."

Sasuke smiled, a bitter but genuine smile, and then his eyes closed for the final time. His body fell to the ground, lifeless. Naruto screamed his name, his heart shattering with the weight of it all. Sasuke, his friend, his rival, the one person who had shared his pain—gone.

But Sasuke's chakra, now within him, was more than just power. It was a testament to his journey, his struggles, and the fragile peace he had found in the end.

Naruto held onto it, the tears that had been threatening to fall finally breaking free. "I won't let you down, Sasuke. I swear... I'll carry your will forward."

He buried his face in his hands, grief overwhelming him. The world had taken so much from him, but now, more than ever, Naruto understood that he couldn't just give up. He had to keep going. For Sasuke. For everyone they had lost.

But as he stood there, in the vast emptiness of the world as he tried to open a portal, something began to change. The power inside him surged, overwhelming and strange. Something deep within the chakra Sasuke had given him seemed to pull at him, opening a doorway to another dimension. He tried to focus, to control the energy, but it was too much.

The dimensional rift pulled him in