It's peak. I really enjoy that Nayu and the boy relationship being as far as it is right now allows for a sincere conversation between the two. The curiousity about the difference between the two environments, the need to help them both because that's the best that you can do and even if you cannot be there physically adds to the romantic atmosphere that would not have been possible if the two were at the same school.
The author explores this side of the romance genre really well, kudos to them.