Generic rape is all well and good, but I don't just want to see girls getting raped. I want to see Sako being creatively sadistic, not just relying on her dick to do all the work.
It's a new factor in the equation, therefore it must, by necessity, be the focus. Instead of her taking pleasure in the pain of others directly, we'll see her getting normal sexual pleasure with pain as a minor side effect. Also, it's Japan, so once the fucking starts, everybody will be enjoying it in three pages or less.
I am putting way to much thought into this. I don't know why but something about this show makes me really opinionated.