Considering the dark and mature topics in my work, as well as the graphic depictions of violence and soon to come sexual scenes, I'm gonna rate my work at NC-17 using the MPAA.
My target audience would be male and female ages 18 to 30; I want to entertain, frighten, and pump up people (thus violence, action, gore-porn, super-hero and anime like artwork + dialogue) while portraying intense sensual and sexual situations (adults flirting and displaying obvious lust) and discussing very dark theme and psychological topics (war on the impact on children, abandonment, love and co-dependency, etc).