Are fox-ears okay? Is untranslated okay?
You could try
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or
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. Pretty sure I haven't seen any English versions of either, and the first one is kinda hard to muddle through. I'd just get a save from sagaoz if there's one there. As far s finding them, usually googling the RJ number is a way to find that kind of thing.
As far as English and yiff-yoff, I guess there's
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, which is pretty early in development, although the previous game Rack is more complete (and 2D). There's also Yiffalicious, which is more of an animation viewer/garrysmod kind of thing, if I remember right. I think it also has some weird online authentication thing that makes it sorta hard to pirate, but I think there's at least one old offline version I've seen somewhere. Maybe that perpetually-dying site yiff.party knows better than I do where it's at.