Is it possible there is something wrong with the WB in this frame?
My English is not too high to explain more,but in short,it may say that WB is related to the story.This one is a love-story,so WB and sharpness was modified to illustrate such kind of feeling.(You could easy imagine what kind of love-story would be in b/w low-key,for exemple.)
In the end thank both for the interest You have given.
