So, after looking at 1.7, the item that dev said he was adding, because many people asked to make the training not so long - is actually not for strength/technic with the master, where you need to hit things, but for the training where MC is molesting the girl. By using item it just skips and adds you the maximum possible lust value for the training... <_< I wonder if that's really what people were asking him for, or he just understood it wrong?
And as for that peeking thing, there is no any alternative that you may get before you bought the key. You can only peek through the cameras, which you can only place after you get the key and go into their houses. So i wonder if it's just that google translation of developer's words was wrong?
The only real difference is if boyfriend/husband are already broken(saw the NTR videos you sold) or not - there will be different animations on camera when they are at home, but that's all.