I secretly observed my stepsister indulging in anal play and she was unbothered by it

I stumbled upon my stepsister's secret anal play and joined in. She eagerly took me in her mouth, then we had intense anal sex. Post that, she rode me while changing positions.

I was casually hanging out at my place when I noticed my stepsister in the other room, indulging in some solo anal play. Initially taken aback by her unusual behavior, I decided to keep an eye on her without revealing my presence. As I observed her from a distance, I couldn't help but be captivated by the sight of her voluptuous figure and the intimate act she was performing. With her brunette locks cascading down, she seemed completely unfazed by her actions, which only served to heighten my curiosity and arousal. As I continued to watch, I couldn't help but imagine myself joining her, exploring the depths of her tight rear entrance with my throbbing member. The thought of penetrating her narrow, yet inviting, ass sent a wave of pleasure coursing through my body, leaving me yearning for the moment we could indulge in our desires together.