Not many people cared for some very early Risa gravure (it accompanied her CD, above)? Definitely your loss!
It feels like it hasn't happened in years, but here is an image from Risa's most productive gravure period that I have not seen (or even knew existed). Oozing sex appeal. Found it on a very serious Risa fan's Tumblr (the image was linked from yet another Tumblr).
And here are some others to pad the post. They may be posted elsewhere.