The story is as good or better than most hentai, and there are some genuinely funny moments through out it, which most hentai never really have.
The art is good, and has a pretty distinctive style.
The sound is really good, or at least you're really paying attention to it at times because that's kinda what the story is about.
The characters are all likeable, which is better than how the characters are in most hentai.
Overall this was really enjoyable, I'd definitely recommend watching it!
