Well, my kind of breakfast and the one we have at hotels in France is on the sugar side. Croissant, pain au chocat, milk, coffee, jam, honey etc... You get ham, eggs and such things in hotels with more international customers. So I've always had the impression that a sugary breakfast is more traditional. But thing is it might vary a lot depending on your social class. Also it might change over time.
The thing that felt right was butter and bread.

Regarding their love for cheese, well I was a hardcore cheese lover, but never felt it right to have some for breakfast first thing in the morning.
They didn't give poor Yune "maroil" or blue cheese - the later shown on the table-.
With maroil, she wouldn't even enter the room harharhar.
The cheese they give her could be cantal cheese
http://en.wikipedia.org/wiki/Cantal_(cheese)
It's not that strong, somehow someone liking Natto should be able to adjust to the taste. But maybe Yune is too young to like Natto...
Somehow, the fish preparation she mistook that cheese for might be a strong taste too. I don't remember well, will have to check that whenever I have access to a real computer.