Well, the whole time travel thing makes no sense anyway. So far as I see it, the future people returned to a future that does not exist anymore since the future had already been changed which makes it a parallel universe. So basically the Lulu Emiru meets in the future is not her but a identical copy created in the new future. Same goes to a potential meeting between the Lulu back in the future and Emiru in the old future that has never met Lulu. So yes, they basically never meet again but meet each other anew in a parallel dimension. Hope that makes sense…