This hentai(in the loosest definition) is great for anyone rather picky about what they watch.
Story:
Great storyline, as the synopsis says, it is a collection of multiple stories. However, I suggest that you read the Manga before watching this.
Art:
Great art, a rather generic character design but visually pleasing nonetheless.
Sound:
the voice actors and actresses did a great job with this, rarely any cheesy areas, quite unlike many other series of this genre
Character:
Character development is top-of-the-line for a hentai series. It is rather simple to understand and they do a great job of foreshadowing.
Enjoyment:
Have to say this is one of the most enjoyable hentai I've ever watched.
Overall:
A must-watch for newcomers.