So I'm not expecting much from this suggestion, but I recently thought about this one and wondered "... hmm, what if..."
Alice in Sexland by Juubaori Mashumaro
An oldie but a goodie.
While it was an officially localized hmanga, this was twenty years ago. (very surprising for the time!)
Most scans are of... questionable quality and subpar resolution, and while some good souls have tried to make some better high res scans you can only do so much with books that old and were almost certainly printed on the cheap. (so it might even be more ideal to just request an original copy directly from the artist and redo the whole thing) Those "newer" scans also have censoring. ouch
The physical books themselves obviously have also been out of print for a loooong time and fetch absurd prices on ebay and such.
I believe old school degenerates such as myself would be elated to get their hands on a newer print of a high quality book with the whole collection.
But what publisher still owns it, if anyone still does or if they're even still around, I couldn't guess.