not the best drama i've ever watched, but i really enjoyed watching every episode. while you were sleeping is the first drama i've watched with the theme of knowing the future from dreams, especially not just one person, but three people whose futures are related to each other. the acting from the good actors (although I believe suzy can hone her skills even more in future projects.) combined perfectly with the ost that matches the vibe of this drama makes us enjoy watching this drama. but looking at the reviews about this drama, I think this drama is either you love it or hate it.