This is one of the most beautiful animes that I have ever seen. The story is wonderful, as are the characters and the animation. I think a large part of the magic of this show is just in its simplicity, and its sweetness. There are tough issues that are brought up, but mixed in with the innocence of the young girl, Rin, they add to the story, rather than detract.
Everything isn't all tied together with a ribbon and a bow, but this anime wouldn't have worked well with that kind of ending. This anime was the story of a young girl, and of a middle-aged man, and how they changed and brought out the best in each other.
This is one of the best shows I have ever seen.