Board Thread:Project Discussion Board/@comment-25436862-20160616030804/@comment-2185383-20160618210853

No time travel, I was suggesting an alternate world like the one in Road to Ninja, however it is set in the past during the Warring States, prior to Hashirama and Madara. How about this: if the Jashinists win in that world, the true reality is basically rewritten to the one in that world like a sort of Izanagi, changing history altogether in favor of the Jashinists? This gives a very good motivation for the characters from the true reality to stop the Jashinists at all costs.

I believe this is the best way to have characters from both timelines working simultaneously, with the setting being in the past.