My step-sister, who I suddenly got after my father's remarriage, is super defenseless at home and shows off her panties! Her boobs are completely visible and it makes me horny all the time! I can't think of her as my sister and I see her as a woman, so I prepared to destroy my family by attacking my sleeping step-sister...but she's actually a super masochist! I strangled her and slapped her, and she was completely obedient, so I did all sorts of naughty things to her!