I need money, and then I purpose my sister

I’m unemployed and I need money urgently. My parents don’t want to help me because I left the school. So my last resort is my older sister. We have lived together for a few years, when our parents were married and then she went to live with a man. I knew that he had strange fetishes, I discovered in those years of living together. But I never thought that his sex addiction, he would take her to ask me to scoparmela. Was his condition, he gave me the money and I had to give her my cock. Even if it is my half-sister, knew me from when I was a child, so for me it was really weird. But I needed money and I had no choice.