The first time I met her sister, she was a shy and introverted girl. Unable to ignore the M-sadistic tendencies of this easily dominated younger sister, my interest and lust surged. As I fiddled with her unknowingly exposed nipples peeking through her loungewear, she instantly transformed into a masochistic face. Excited by that submissive expression, I thoroughly trained her nipples! With just a little stimulation, I developed her into an early ejaculator who orgasms from nipple play alone. In the end, I made her into an obedient nipple pet and fucked her modified pussy, cumming inside her!
