My new stepsister seems to be constantly horny, always teasing and tempting me whenever something happens. We may not be related by blood but we are technically siblings, so I've been trying my best to resist her advances despite being aroused. One day after school, when I returned home, there she was waiting for me at the entrance! Before I knew it, she had pinned me down and started riding my face! It felt like I couldn't breathe, yet my crotch was throbbing with excitement! Seeing this opportunity, she eagerly wrapped her lips around my hardening penis, refusing to let go! Damn, that was low - taking advantage of someone like that! There's no more reason left for me to hold back now...