... but there is no Buroto. You stole hinata
in fact you stole a lot of the mothers of the buroto gen
I can think of a few ways that that
could work...
1. You get news from Saru, Toneri, etc that the future is doomed without those children, so you reluctantly have to send them to marry/get knocked up by their canon husbands. (Arguably NTR/Cucking, so.. Unlikely but the most logically possible.)
2. The same Jutsu that is currently being used in act 3 to resurrect dead shinobi will be completed via other means in the original timeline, and it (or another like it) will be used on the you of the future, dragging your soul back to that timeline. (It'd be a shame to lose all we've worked up to that point, but it works...?)
3. All the relevant fathers marry and have kids with different mothers, (ex. Naruto x Hanabi, and/or Sasuke x OC who may or may not be named or drawn) and those kids will just
happen to be the same as they are in Boruto in every relevant way. (Might explain why certain characters haven't been introduced (Hanabi), but otherwise is a major cop-out that spits in the face of science.)
4. ...
Something, whether it be the events of act 3 changing the timeline too much, or some new high level (shin?)jutsu, will cause some kind of
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-esque course correction/collision of the timelines, which will make it so that the events of both timelines are true despite it not logically being possible, and (almost?) nobody will question it on some kind of omnipotence-esque fuckery with their memories. (Quite a reach, I know, but this is the only way I personally can think of that gives us the new cast without costing us anything. (Except potentially 3, but I don't like that one.))