But to add any more would ruin the movie, because even though there are a lot of things you might find missing, there's already more than enough there. The concept is original and poignant, and the presentation is such that it allows for viewers to put themselves into the story right alongside the characters and think, "What memory would I take with me?" If that thought even crosses your mind (as it apparently did even for those who thought the film "boring" or "poorly presented"), then Koreeda has succeeded. It leaves us not with an answer, but with a question.
If you want a movie that presents a complex story and ties up all its loose ends in a nice pretty bow at the end, go see the blockbuster-film-of-the-week at your local cinemegaplex. If you don't mind open-ended stories that require a little more from your higher-order brain functions, take the time to watch and wonder at Wandafuru raifu.