Step sibling stumbles upon step sister indulging in self-pleasure with a vibrator. Initially shocked, he can't resist joining in, exploring her body and bringing her to intense climax.

I stumbled upon my step sister pleasuring herself with a vibrator, her fingers spread wide on her soft belly as she rode the toy. The sight was both shocking and arousing, a mix of forbidden and familiar. I watched from the corner, my heart pounding in my chest as I tried to suppress the urge to join her. The sound of the toy buzzed through the room, a constant hum that seemed to echo in my ears. I could see her face contorted with pleasure, her eyes closed in ecstasy as she worked the vibrator deeper into her. The sight of her, lost in her own world, was intoxicating. I couldn't help but imagine what it would be like to touch her, to feel her heat against my skin. But I knew I shouldn't, she was not mine. I watched as she reached her climax, her body shuddering with pleasure as she found release. The sight was unforgettable, a memory that would stay with me for a long time.