When I went to her house to play, I encountered her incredibly cute younger sister. I was more interested in her than the girlfriend. So I decided to assault her. She seemed to dislike it but had little resistance. I started by groping her breasts, manual stimulation, and forced blowjob. With the momentum, I fucked her. Since that day, her younger sister has become addicted to my dick, and we secretly have sex just short of getting caught by her.
