Meh. I don't know Japanese anyway.
I wasn't focusing strictly on slave type games - I was thinking more of just the XXX flash non-shitty genre. Most games seem to be those damn videos (which suck), or the choose-from-three-selections type (which suck worse, because now you can fail at watching a shitty animation), or a few dating sims (which, actually, I don't think are all that bad in the main... they're just kinda rare, often frustrating, and not usually worth replaying).
Of course, there are other media besides Flash. There are a couple browser type games (which follow in the path of shitty Flash choose-your-failure modes), but there is a pretty solid bunch of AIF (Adult Interactive Fiction) games. Of course, the vast majority of these are text-only; not a huge issue. Worse than that, these are mostly prone to the same failures of normal interactive fiction, which is that they can be incredibly annoying to play. There's also a huge gulf between the best and the worst.
But, anyway, before I got sidetracked: that sucks. I was hoping that someone else here had done a better job of Googling than I did.