I watch my stepsister masturbate, unable to tear my eyes away (she desired me to penetrate her anus)

My stepsister caught my eye as she indulged in some self-pleasure, her fingers exploring every inch of her body. I found myself unable to look away, my gaze fixed on her as she reached a climax. When she hinted at wanting more, I couldn\'t resist the urge to satisfy her desires, even if it meant taking her from front to back.