Itachi sat in the darkness of the old Uchiha headquarters. A quiet and serene scene, he awaits his final destiny. The clash of him and his little brother was almost imminent as he heard footsteps enter the long hallway. Continuing to sit on the rock-like throne, his eyes open slowly the Sharingan activated already. His eyes already clouded by the overuse of the Magekyou, he makes out the image of his younger family member. He could tell though that he had at least gotten taller.
"Sasuke… you've really grown little brother. I wish I could see you clearly this last time."
Sitting up fully he looks at his sibling and asks.
"So what does your Sharingan see?"
Without the slightest hesitation Sasuke replies.
"I see only one thing. Your death."
Itachi lowers his head trying to comprehend all of this. He had to continue to put up his false act of not caring. Deep down he did not want to fight the only family member left that he loved.
"Perhaps it is my death that you see. I welcome it Sasuke. I'm tired of this regret of what I did to our clan and to you."
After the fight starts they both revert to shuriken tossing. Each ninja reached into what seemed like an infinite supply as black metallic objects flew threw the air bouncing off each other and landing on the floor below.
"Amazing! Sasuke you could barely throw a star when I left you. You really are an outstanding ninja."
The top of the building blown off by Sasuke's fire attack, both ninja stand on the remaining parts staring each other down. Sasuke calls up for his next attack which was the lightning. A fierce dragon's appearance overtakes the skies as Itachi stands in awe looking up at it.
"What! This cant be! I must summon Susanoo!"
Activating that technique at the last moment saved his life for now until he could give his final words to his brother.
"Sasuke...I couldn't be more proud. Such power. However, it's your hatred towards me that gave you this. I'm so sorry."
Sasuke expanding all of his chakra after this attack allows for Orochimaru's release from the cursed seal. The snake-like villain appears wanting to put an end to Itachi.
"Monster. Leave my brother be! Don't worry Sasuke I will save you from this madman as my final act."
Susanoo stabs Orochimaru sealing him away into Totsuka and ridding his little brother of the cursed seal.
Itachi weakened from his efforts and by his plaguing disaease slowly stepped towards Sasuke. His thoughts were still active as he made the final approach.
"All my efforts...for this. Don't worry Sasuke go home to Konoha. Be free from this hate and lead a simple ninja life. In case Madara wants to bring up the past I'll get him with this."
His bloody fingers rose as he faced his brother and tapped his forehead secretly giving him his technique the Amaterasu. Falling to his knees he finally gets to smile, happy to see his sibling for the last time. His emotion at this time was not faked but real.
"Forgive me little brother. There won't be a next time."
Falling over he looks at the sky and draws his final breath.
"Thank you Sasuke. I love you."
With that his eyes grew dark his spirit leaving this world.