Deep beneath the Shinobi World, in Uchiha Madara's cavern.
Uchiha Obito and Namikaze Minato, both from the future, sat there.
"So what exactly is going on with our current timeline?" Uchiha Obito asked softly. He felt dazed, confused by the information Namikaze Minato had suddenly explained.
After all, time travel was not linear. That meant people who had never truly experienced time travel—or had experienced it only rarely—found it difficult to understand.
"...Let me think about how to explain this to you..." Minato pondered for a moment, then formed hand seals and quickly summoned a whiteboard. "First, you should know that we returned to Hiroki's present during his childhood—which is our past—in order to alter the bad future of the spacetime we came from... You understand that much clearly, right?" Minato drew a straight line on the board.
→Current Timeline→
Minato pointed at the line and looked toward Obito.
"Yeah, I know." Obito nodded seriously. Though he had not done well in school and often skipped class, as someone who had at least attended the middle and high schools reformed under the Fourth Hokage, he could still understand this easily enough.
"Then there's our future, which comes after the current timeline. It's not easy to explain, but you've watched short videos before, right..." Minato continued asking.
"Of course I have! That was a form of media created by Lord Hiroki, the Fourth Hokage!" Obito patted his chest, even looking a little proud.
"Very good..." Minato nodded at Obito's words, but when he thought of how Hiroki had created them, his expression turned complicated again. They were still using something Hiroki had created in the future to deal with Hiroki...
Sigh...
But there was nothing they could do about it.
Minato sighed softly, but without much hesitation, he continued