.
I'm sorry,
Nhocbu, this will be a tough one. You just had a fantastic expert from these parts look into the matter, and if he came up dry, the situation looks bleak.
If you want to keep at it, I wondered if I could come up with further clues. One problem is that the title doesn't come up much in the search engines, given that it's out of print (according to this
translated page of the
original).
(But we can also see that whomever put up the
Xvideos footage put up the whole thing, given that the running length is 60 minutes. That's fortunate; often one only gets clips with Xvideos.)
Ezepietro's translations in English for 専業主婦 is "Stay at Home Mom," along the lines of what we've been informed, "professional mother." The film's title {ザ・同性愛母娘 禁断の性の地獄) is translated as "Hell of forbidden homosexual The mother and daughter." A
blog dedicated to the lesbian movies of FA-PRO translated it as "Erotic Lesbian Hell."
This site has made the movie available as a (I suppose) higher quality direct download, if you're interested. It also features screen shots.
Two of the keywords the Xvideos uploader included were "
musume" and "
okasan," and I wondered if they may offer clues for the actress' name. Unfortunately it seems the words mean daughter and mother.
I did not watch the whole movie, but it seemed to me the actress didn't resemble the model on the back cover... where the lady looks very hot.
I glimpsed at the 19 min. clip on Xhamster, about comforting the "stepmother till father comes back from the prison." If you're sure the actress is the same, maybe you can focus on the origin of that one. It's a very long shot, but you could sign up and send a private message to the
uploader; maybe he will shed some light on the clip's origin. I see there were forty comments for this clip, but nothing educated.
You may also try performing frame grabs from both films where the actress' face is nice and clear, and post in the other JAV Idol Identification section; perhaps she will be recognized.
.