Thank you both! I appreciate the help very much. I had clicked through about 40 pages of the Molester genre on JAVLibrary but didn't come up with anything. Would you be willing to divulge any info on your methodology for ID ing the vids. I have a few other JAV clips that I need identification on and I'd rather do it myself than bother others with my problems. thanks again.
Hopefully Electromog will see your post and answer because he is the god of IDing JAV actresses and titles!
Mere mortals like myself rely mostly on our memory, which, in my case, is rather short, but in this case, I simply recalled having watched a title like this that starred Hatsumi Saki. I even remembered that she was on the cover, so I went to her JavLibrary page and browsed through her videos until I found it. The funny thing is that I knew Miyase Riko but somehow didn't recognise her on those pictures that you posted.
Apart from your memory, there are a couple sites that can help. I see you already know
JavLibrary. There's also
dmm (I use the digital version) and
sougouwiki. And then there are google image reverse search or whatever that's called.
If you found a video on a Japanese site, you could also use google translate to see if it gives you a name or just copy/paste the name of the video into google and do a search. Click on the first 5-10 links depending on how badly you want to know the answer - some sites might give you a source by naming the title that the scene is from, although they very rarely do that in my experience.
And sometimes you can do what you did looking for this title: going through a category that you think the title might be listed under and hoping to find it eventually. It's time-consuming, for the most part, but it might yield results.
I hope I could help!
EDIT: oh, and also, feel free to post the rest of those ID requests! I might not know everything (and that's the understatement of the year) but I'm here to help!