I think that this film is beautiful, some times this kind of film can seem overley sentimental but the writer/director got it absolutely right.
Park Hae Jin and Lee Young Ha played it beautifully, I totally recommend this film.
I will certainly look out for more work by this director as he has made me want to see more of his work, he also must have a good team around him.
Some have said in reviews that it was a bit Art House but I totally disagree,I thought the pace of the film was spot on as I don't think a film of this nature should be rushed.