After my father remarried and a new stepmother and stepsister arrived, I was caught masturbating when the whole family was out. Suddenly, my stepsister came home, and I panicked, trying to hide my erect cock. Seemingly exhausted from work, she asked me to massage her sweaty thigh-highs. As she sweetly urged me on, I began firmly kneading the soles of her feet—until my fully erect cock was discovered. Flustered, I tried to hide it, but she teased, "If you're jerking off in secret, you must be a virgin," while closely inspecting my cock. Though she claimed she couldn't do anything sexual because she had a boyfriend, she started giving me a footjob by wrapping her legs around my shaft. Seeing my excitement, she provocatively kissed me. Unable to resist, I groped her breasts, ignoring her half-hearted protest, "No... I'll get too excited..." At this first intimate moment, I watched as she used her fingers to stimulate her clit while teasing my nipples with her toes in thigh-highs, then began sucking my cock. With her gorgeous legs in black thigh-high socks swaying, she delivered an intense blowjob. Then, spreading her legs into a wide M shape, she couldn't resist her own arousal and whispered, "Hey... just putting it in doesn't count as cheating, right? This stays a secret, promise," before mounting me in cowgirl position with bare penetration. My cock plunged into her virgin pussy, dripping with first-time arousal, and the fit was so perfect that she immediately climaxed, her legs trembling violently. Throughout the night, I was forced to cum inside her again and again—pleasuring her insatiable desires in positions like wide-legged rear cowgirl and missionary with her soles flaunted in my face. [Binaural Recording 3D HQ High-Quality VR]