While this isn't the best hentai, it's actually somewhat okay. The main thing that was hard about this review is the fact that there's only one episode. And I don't think they'll be adding more.
Now then, for the review.
Story: The story is simple, but it's way too short and simple. And that's what I really don't like about it.
Art: The artwork actually isn't too bad. That's all I can say about it.
Sound: Sound quality was good, Music was nice, and sex sounds were sexy. Not really any bad things to say about the sound.
Character: There isn't really much character development, other than the fact that Risa is running away from home and apparently has a boyfriend, and the uncle is a pervert who hasn't had sex with a girl in a LONG time.
Enjoyment: I enjoyed it well enough. Like I said, the main problems were the story and character development.
That's pretty much all I have to write about for this one.