So Ji Sub and Son Je Jin both have wonderful voices, which was perfect for the voice-over work that was done in this film. This was a beautifully sad, yet uplifting movie, about the power of love, and choices we make - even knowing how things will end. The little boy in this was marvelous as well. I don't want to give anything away, but I will suggest you have tissues handy and watch for the surprise cameo at the end (seeing a recognizable face was fun, but it kind of took me out of the show.