Why IS violence so present in the majority of accessible sexual fantasies?
A better question would be why is violence present PERIOD?
Bare in mind that a lot of the "gushing" over such works of fiction are more just to be spiteful and get a rise from those they deem as normal. And doesn't have to be sexual violence; they gush over ANY violence (at least as their online personas).
If you want to understand violence, you need to separate it from sex. Otherwise, I'm sensing this is another fruitless search for a convenient boogieman where there isn't one, just like ever other anti-porn crusade over the centuries. Human nature isn't so simple, neither is violence.
I was thinking this myself, but I'm not sure what the tag convention would be.
I've seen people drawing Kanbaru's outfit (e.g. post #11205979) I've got a few queued up I could post. Also Ononoki. I haven't seen many of the others yet though.