It is a very SFW-oriented harem anime that I like when I was in middle school and was recommended by my much older cousin saying "yo, here's an anime with awesome OP and ED themes". The whole story being somewhat incomplete in many ways completes the theme of the story. That is letting things go. The MC is definitely not the star of the show. But really and seriously. Who is the star of this anime series? My conclusion is that it is not a character in Sister Princess, but more like love, specifically about light-hearted love for others very close to you. I personally believe it'saccurate to say that the anime's plot, compare to the game's plot, emphasized the elements of criticizing the dog-eat-dog social attitudes in mid-late 1990s Japan much more than I expected. It nevertheless has a thinly-veiled criticism of mainstream Japanese socidety.

I still return to this anime series once every 3-4 years.