Kat Showing Some Muscle

Julie's parents were not home when Mark, Kat, and Julie arrived. In the ride over, Kat had used her power to transform her bikini into a red shirt and pants to Julie and Mark's amazement. As they stood in the apartment's kitchen, Kat explained how powerful she felt. How the energy seemed to absorb into her. Mark was nervous because of what his father was going to say. Kat just smiled and flexed one of her arms. Her muscles exploded on her arm as power rushed through her veins. She responded, "You don't need to worry how he or anyone else will react again." Seeing her simple display of power started giving Mark an erection again, which gave Kat a fun idea.