there was one..check it out http://www.mangago.zone/read-manga/never_days/uu/tr_chapter-1/pg-10/ the seme was giving hints
The problem with it is that it's a very forced discussion, and it's only one. There are a lot other distractions that makes this a very passable, at least odd comment. So Minato makes one forgettable comment about the dangers of construction, it's not enough. There's nothing sci-fi mentioned nor anything that really punches a foreboding feeling.
TRUTHS
The time travel reveal isn't that bad, but honestly it could have been done better. The mangaka could have included hints here and there that Minato isn't who he claims to be, yet there was nothing at all. Just a sudden sci-fi turn that felt like whiplash. I don't even feel bad that the future Minato disappeared because the build up didn't leave much for emotional attachment.
The art is kinda cute though. c: