Masturbation Caught, Blackmail Ensues

Handsomeben1, in a solo male roleplay, discovers his step-sister masturbating in the bathroom. He blackmails her, using his thick, hard cock as leverage. She's hesitant but intrigued, watching him stroke it, her eyes wide with curiosity and fear. He demands she watches him masturbate, her punishment for her secret pleasure. He moans, his cock throbbing, as she's forced to learn the power of his pleasure.

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