I find my little stepsister's diary and discover all the sexual secrets she writes about me.

One day I was resting quietly on the sofa until my stepsister came to wake me up and ask me to leave the furniture that she needed to do something. When I go to the room since she woke me up, I discover that she has her personal diary on a cushion of the sofa. When she leaves I read and discover that she writes a lot of sexual and hot things about me and I fuck her in exchange for keeping the secret.