Vampires
You walk into the great hall of you parents mansion and bow before them. Your mother eyes you with a look of skepticism, but proceeds. "Aro, today is your eighteenth birthday." your mother says. "You are now ready to take the test of manhood. Later tonight, you will choose one of the maids to turn into your first slave. You will try to control your hunger, and if successful, you will be a man. If you fail to control your hunger and kill her, you will fail your test and retake it next month....
Fantasy