In the year 1000 of Konoha, a ninja named Sanzenin Yuyuko traveled through time to before Konoha was established for various reasons.
The world view of the future is generally that of a psychometric one, sometimes incorporating ALDNOAH. ZERO, Headless Horseman, Super Marines and the like.
In short, remember one sentence, all unreasonable plots are to make the article appear more reasonable.