The says his parents run a family business in a 3 floors house, on the ground floor they run a restaurant, on the first floor is where his parents and his sister, with her husband and daughter live, and on the last floor is where he lives. Most of the day the first floor as no one, all family is working in the restaurant, but sometimes happens that some one comes up to pick up something, that's why it's better to have sex close to the stairs so they can listen if someone is on the first floor. He says his having sex with his niece for about a year and until now no one suspects a things.