Recently, my sister was dumped by her boyfriend and I'm in trouble. She's always been Rina, but she's been taking out her desires on me. She asks me to kiss her and hold her, which is honestly pretty awkward. She escalates further and puts her fingers in and licks her pussy! She even makes the forbidden request, "Just put it in a little!" I refuse, but my dick is rock hard and I can't avoid insertion. Now I'm doing my best to satisfy my sister's sexual desires, like a brothel for women.