My Sheltered Sister's Keeper

When my sister turned 18, our parents decided she would be mine. They had too many kids, and raised her innocent and sheltered from the real world. I was mad at first, I liked living on my own and having women over, but then I realized I could make this work for me. My sister was going to be my sex toy. Raised to be obedient, I'd train her to do whatever it took to make me happy. It wasn't going to be easy for her.