Sacred Tradition Lets Me Breed My Virgin Daughter

My family and I lived on earth but we weren't of its people. We lived among them and partook in their customs, but we still retained many of our own. One such custom was a ritual that was meant to keep our bloodline pure, and my daughter was ripe and ready for it. Together my wife, our daughter, and I would engage in the kind of passions that humans could only dream of.