Board Thread:Boruto Discussions/@comment-3568954-20161104001832/@comment-2006510-20161104022944

Just because it's called chinese medicine in-universe doesn't mean China as a nation exists in the shinobi world... and even if it did, it'd be different from the one we know

But anyway, I think the reason Boruto and Himawari didn't know about Naruto's abilities is simple: he never showcased them. Ie, there were no battles that required such power on his part (if any at all), and thus all they know about were Shadow Clones - regularly used - as well as general-but-not-specific statements that their father is strong

And also, for what reason would there need to be more jinchuruki anymore? There is no more need for a balance of power, and without any known threats, there's no reason to force the Tailed Beasts (or any hosts) to be forced to reside within each other. If they choose to do so, that's one thing, but there's no real need for them anymore either... especially since 'what if this happens' only goes so far

^That's what I think