After meeting Itachi, Obito seemed to have dismissed his doubts and returned to his "normal" life.
But no one knew that he had written down these fragmented pieces of information in a notebook...
Sasuke...
Kakashi...
Naruto...
A punch...
A sudden headache...
And one more coherent memory point with a clear purpose:
Go investigate the cause of Itachi's death!
Below that, Obito wrote some of his guesses about these fragmented clues:
Itachi wasn't dead? Why would I investigate the cause of his death? Could it really be as Black Zetsu said—that there's nothing wrong with me, and everything is just my imagination?
Illusionary Realm? ×
After "Illusionary Realm," Obito had drawn a red "×." It was this "×" that kept him deep in thought through many nights.
Because this world was so real.
Pain, sight, taste, everything... everything was real. There was no way he had fallen under an illusion. Whose illusion could leave him unable to find even the slightest flaw?
How much stronger would that person have to be than him to cast such an illusion?
With these doubts buried deep inside him, Obito had once infiltrated Konoha and secretly observed his old friend Kakashi. Kakashi was still the same old fool. At that point in time, he had just taken charge of the three stupid brats in Team 7.
He was often late, and he would tell Obito's "Memorial Stone" about what had happened to him, as though he were sharing it with an old friend.
At that sight, Obito's heart had stirred slightly. He sighed inwardly. Unfortunately, nothing could go back to the way it was. After Rin died, nothing could ever return to how it had been.
Kakashi, it was you. You destroyed our friendship, made it impossible for us to ever go back to how