"It's you?" Mū cried out in shock, involuntarily recalling the scene from long ago, when he and the Second Mizukage had died at this man's hands.
That overwhelming advantage had left both him and the Second Mizukage utterly unable to respond. It was a despairing gap he had never been able to forget, even in death.
"Shin...!" he murmured. He had indeed just heard Uchiha Madara address him that way. After a brief turn of thought, he said, "Uchiha Shin? Then that explains it."
There might have been many shinobi named Shin in this world, but the only one Uchiha Madara would call Shin could only be the God of Time and Space from back then.
That also explained why he and the Second Mizukage had been unable to fight back even when they joined forces. He had heard of the Three Gods and had fought Senju Hashirama during the First Shinobi World War. Though Senju Hashirama's strength had shocked him at the time, it had not filled him with despair. Yet he had never expected that, despite both being among the Three Gods, he would not even have had a chance to flee when facing Uchiha Shin later on.
In this world, there were some slight differences from the original story. At the very least, Mū had never met Uchiha Madara while he was alive. He could recognize him only because Madara's attire was far too famous. If it had been Shin instead—especially since Mū had encountered Shin many years after the Valley of the End—he would have been unable to recognize him.
But there was no meaning in saying any of that now.
Uchiha Madara completely ignored Mū beside him. Striding forward, he asked coldly, "Shin, shouldn't you explain the current situation to me? What is this Impure