Not to harp on about this, but I feel like this is a recurring thing with bondage-focused games, and I just don't get it. If the bondage is a major feature, then actual sex seems to be a rarity; If sex is significantly featured, then the bondage side tends to be fairly weak, or nothing but set-dressing. Sometimes that seems to be a weird attempt at avoiding an explicit rating, or is just a pure interest in bondage, but it far more seems to be the case that they do have sexual content (vibrators and fucking machines and all that), and do actually have the bad endings be "then they were sold off into sex slavery and raped for eternity (or w/e)", but don't show much actual sex with another man or woman.
Oh well, at least this one came with a warning. Not going to turn it down for not having much sex, just feels like a lot of foreplay but having to make my own climax.