Even though it's only a set of six short almost-unrelated stories, it's a very touching series.
It is a highly enjoyable anime without a complex plot. The soundtrack is made only with synthesizer sounds but the themes are lovely and in perfect harmony with each story. Despite not having hyper dramatic scenes, it manages to create a very nostalgic atmosphere because of the contrast between the sad moments and the cuteness of the characters.
The only thing I've never liked about it is that it never got more episodes.
This series definitely needs more love. It's practically forgotten now despite how good it is. It should be considered a must-watch classic.