I sneak into my stepsister's room and pleasure myself as she wears only her underwear - the complete narrative

In the heat of a steamy summer, I found myself in my stepsister's room, her only attire being her skimpy underwear. The sight of her voluptuous ebony body was too tempting to resist, and I couldn't help but reach for my throbbing member. My hands danced over my length, my strokes growing more frantic as I imagined the taste of her luscious skin. The sensation was overwhelming, and I released my hot load, painting her walls with my essence. This intimate moment was not meant for her eyes, but the memory would forever be etched in my mind. As a young student, I've had my fair share of encounters, but none quite like this. The thrill of the forbidden, coupled with the sight of her ample curves, pushed me to the edge. And now, I can only hope she never discovers my secret visit.