If I ignore this opportunity, I will not be able to escape from the new life for the rest of my life. Not knowing what to do, my sister offered to help me by... let me practice fucking her!! And then I got out of my new life, her huge soft breasts rubbing against me made my cock erect instantly, she sat on my cock, thrust it deep inside her so I couldn't stand it and quickly cummed inside her. This was supposed to be just to train me, but I couldn't stop anymore, I was addicted to the feeling of having sex with her, I liked her and wanted her to be my own woman...