Well not really surprised it's ending soon, this all seems to go towards the inevitable conclusion :P
... by the way, maybe I shouldn't be surprised that the main pair of characters was indeed selected for that quadrille thing, but I really thought at some point that Mona and Shion might be winning it - they had that whole arc of getting really invested, meanwhile Kiki had that subplot with the sister, with one of the messages being that she shouldn't necessarily try to imitate her sister at everything, and has someone important by her side and whatnot.
Oh well, simpler is probably better anyway :P This was a nice chapter.