Whoosh!
A space-time vortex spun, and Obito and Tobi appeared atop a lofty mountain outside Amegakure!
During his time in hiding, Obito had used the severed arm Sasuke left behind and Tobirama's forbidden technique to make himself Sasuke Uchiha's biological brother.
He had also transplanted the eyes of Sasuke's father, Uchiha Fugaku, which he had collected on the night of the massacre, awakening the eternal Mangekyō Sharingan!
Tobi asked, "Are we attacking right away?"
Obito replied cautiously, "No. After the lessons of our last two encounters, I know all too well how unpredictable he is! First, I need to see how much Naruto Uzumaki has grown!"
Obito partially covered his left eye with his hand. Through the gaps between his fingers, he looked toward the tower-filled Southern District of Amegakure, his pupil adjusting its focus!
Telescope was a supplementary ability available only when using a particular dōjutsu of this eye!
With this ability, Obito could even see every pore on someone's face from thousands of meters away!
Soon, he spotted Naruto walking through the rain alongside Konan!
Obito was surprised. "Oh? So that's Naruto now? He's replaced both eyes with Sharingan, and after obtaining a pair of Rinnegan, he moved them to his hands. That has to be Orochimaru's work. But surely there's more to it than that!"
Bzzzt!
A red glow lit up his left eye.
Great Debate!
This had originally been Uchiha Fugaku's left-eye dōjutsu. Like taking a photograph, it recorded the target's chakra, techniques, combat intelligence, hidden abilities... every combat-related quality the target possessed at that moment!
Once recorded, the information was stored in the eye's database!
It could then be accessed at any time to run simulated battles on Great Debate's own mental battlefield!
After completing the recording, Obito Uchiha closed his eyes!
Snap!
Ten minutes