I just watched episode 1 and I actually liked it more than I thought I would. Yoona isn't so bad in it either, I'm actually liking her character and I too love the umbrella symbolism. Judging from the first episode, I really don't like his friend, but I have a feeling this'll get really complicated pretty fast so I'll probably end up liking both of them and end up heartbroken either way. Oh well, I'm used to that in dramas.