Step-sister urges her to pleasure herself and receive a creamy finish

My stepsister\'s got a juicy pussy that\'s begging to be fucked. She\'s always trying to seduce me, but I\'m not interested in her. So, I leave her alone to pleasure herself, hoping she\'ll finally give up. But when I catch her masturbating, I can\'t resist and join in, leading to a hot, steamy encounter.