Apathetic coworker Rena visits my room every day to play games, letting me touch and fuck her in exchange for using the place. She barely reacts even during penetration and keeps gaming while casually telling me to clean up afterward. Then I pinch her nipples and discover she is incredibly sensitive. Her breathing turns ragged, her pussy floods, and she clings to me through her first orgasm. From then on, Rena forgets the games and comes over to ride me, becoming addicted to climaxing on my cock.