Nino arc is still no done ? she didn't say shes going back to the sisters she could probably run off to another hotel or someplace, again Nino arc is still no done. At least 2 or 3 more chapters until we get back to the rest of the sisters.
Puting Fuutarou to sleep is as inconsequential as the trope where the girl sends the guy flying with a punch because of some stupid reason. I'd even say it's even more meaningless as none of the characters comment nor care about it. Fuutarou especially.
i really hope he end up with miku but because there is some rule like:
the first girl introduced win or the tsundere plot
it's kinda of piss me of so please make miku win or a list ichika