I got new stepsisters due to my parents' remarriage. I was honestly taken aback by suddenly having female siblings, but I thought I was mature enough to maintain a decent relationship for my parents' happiness... Only to find out that she was an outrageous bitch pretending to be a good girl in front of our parents. I was unfairly criticized, and it pushed me beyond my limits. After punishing her with a vibrator laced with an immediate-acting aphrodisiac, she ended up in a state of arousal, even seeking my dick...
