It's certainly amateurish production quality whatever its origin, which is equally consistent with real or fake, and JAV has plentiful amateur productions that look like this.
Yes, most of the supposed pairs do not resemble one another, but this is what one would expect from a set of real pairs. Some children strongly resemble a parent, others do not.
One can't tell from the cover, but one or two pairs, maybe three, have what I felt was a striking resemblance plus distinctive features and expressions once you see the faces close-up.
Not that I'm saying it's impossible for them to find lookalikes.
However I'm afraid I would have to disagree that it's hard to believe that some blackmail like this would happen repeatedly if it happened. I don't know of any
documented cases of incest-blackmail, apart from one claim that it does happen which I saw on a Japan discussion board by a member who claimed to live in Japan as a foreigner and
to know a lot about how things work in that society. But *repeated* sexual blackmail, using rank or power to pressure a woman, seems to be the norm among those people who do that sort of thing.
There are many news stories about that sort of problem, in many countries. Whenever a fellow is caught, it always seems that he had many victims.
As for the legality of the videos, if somebody wanted to make some extra money by selling his blackmail videos as his own amateur vids to some low-budget company,
I'm not sure the company would try to contact and personally interview all the women to make sure all was above board. In most countries it's not hard to fake paperwork like
model permissions. Also I'm not sure how effective the government there is at policing all the many new JAVs. I wonder too if perhaps the man had only a few
videos to sell which were later supplemented by some real fakes mixed in.
Well, I looked at it expecting a typical low-budget fantasy, and was surprised by a few of the scenes and actresses. I still can't fault anybody for thinking it too far fetched of a possibility.