NPH-154 - My step-sister's exposed large buttocks in revealing underwear is causing a strong erection. Asuhi Mai.

My father remarried and I began living with my stepmother's child. That sister is too exposed at home, always showing her mini-skirt underwear. She has a cute face but a large buttocks and clings to me, coming to bathe with me and showing me masturbation. My erection wouldn't subside, and I thrust my nearly exploding penis deep into my sister's throat, engaging in incest secretly from my parents.