We met on the way home from the convenience store. I was walking through a park in the middle of the night when a woman called out to me. We then had a drink together in the park, and the next thing I knew, she was at my house. I didn't know her name. I didn't know what she was doing. But I was drawn to her more and more, despite her mysterious side. This is a record of the three days of crazy sex I had with the older sister who came to stay with me.