When I was at home with my sister, my hand accidentally touched the tip of her breast. Shit! Before I knew it, she twitched and started shaking violently, soaking her crotch and losing control. What!? Just from a slight touch, sis, your nipples are that sensitive??? Her nipples were too soft, and their reactions were interesting. So I touched them, pinched them, pulled them… relentlessly tormenting her weak spot, the nipples, to heighten her sensitivity. Then she started begging for my cock, so I got to have sex with her and finish inside！！
