Arafoo Kenja no Isekai Seikatsu Nikki

you can't really say much about there relationship since when Fl comesback to the real world they only have at least 7-10 chapters of interaction and it would be equal to 1-3 days of fl being "alive" and the other problem is the system, since it doesn't allow the fl to hear what the ml's dreams which are the things happening in Fl's transmigration since the system said something about it being forbidden i guess? and also the limited time of fl being "alive" if you were to read the part of where the fl and ml are in real life/world it would seem to be rushed so to answer your question it's a No

Don't worry, there will be side character chapters after each arc and almost every single one will hurt just as much as the previous one.

Glad to see everyone found their long lost twins here ?

Hope happy ending.