He grins, this is highly interesting not to mention sustaining for her fear and pain. He answers causally, because this is the sort of thing one picks up in millenia after millenia of being a mazoku Lord, "If you have skill enough to simple remove skin without hitting anything vital you can manage most of a human but they'll pass out from pain after you get the first hand done. They'll eventually die from blood loss but if you cauterize it they die of suffocation."
I'm sorry again for the delay, it seems as that's all I do but my computer just stopped working and I've only just gotten my new one. Also I have no idea if what Gaav says is true but he says it is so we'll go with it if that's ok? I am NOT going to search for such things as I don't want to know what I'd find or have the sheriff show up and tell my father he was arresting me for plotting some person's torture. :P