Amanuensis's Journal

This isn't true for your very darkest stories, but: a sense of humor and an appreciation of the absurd. And usually an honesty about the morality of what is going on. This "honesty" ties into the way you get into the reality of a fantasy, like, say, non-con, and observe all these little truths... which somehow usually ends up in making the realistic-fantasy hotter rather than ruining it.