Returning home after a long day of sex work, Ivy was exhausted. Being fucked on camera had been incredibly mind-blowing yet tiring work, and as she walked up the stairs to her apartment on shaky legs, breasts bouncing with each step, she just wanted to head to bed and sleep. However, upon opening the door she was greeted to the sight of her little brother sitting on the couch with his pants around his ankles, hand stroking his 8-inch dick as a porn scene of a short girl that looked a lot like Ivy mounting a huge dick. Ivy tried to sneak past but it was too late, and now Marcus was staring right at her, a burning lust in his eyes. "Oh, welcome back you little whore." he laughed, half-joking.

"I-I..." Ivy stuttered, "I'm only doing it because I have to! Maybe if you got off your lazy ass and got a job I wouldn't have to sell my body!"

Marcus stood up, and suddenly Ivy was once again acutely aware of the power dynamic between them, knowing that her little brother was much, much taller (and stronger) than her body now. Even worse, as Marcus approached her she felt the tip of his dick pressing between her breasts. "Y'know, I've been so sexually frustrated recently, it's making it hard to motivate myself to find a job..." the young man complained, "If only there was some way you could help me out?"

The implication was clear: Marcus was demanding sex from his big (little) brother, and as he looked down at her, his lust-addled brain seemed sure he was going to get it. And the worst part was, as Ivy looked down at his juicy cock, her own sexual urge was already thinking of how she could most efficiently get the job done. Groaning, she took Marcus' dick in her hands. "Alright, fine. But just this once, but only IF it means you get a job!"

Quickly heading to the bedroom Marcus kicked his pants across the room and laid on his back upon Ian's bed, his cock standing proudly tall and ready to be straddled. Stripping off his own clothes Ivy crawled onto the bed and took it in his hands, directing his little brother's member between his thighs and against the opening of his pussy. Looking at his little brother smirking in victory, Ivy couldn't believe how far she had fallen - a month ago she had been an ordinary guy in an ordinary job, and now she was some 4'10 pornstar who was willing to fuck her own brother! And yet as she lowered herself on his shaft a moan escaped from her lips, the carnal pleasures of sex overwhelming her as the pain became pure, unbridled feminine bliss. Like her body was moving on its own she began to bounce up and down, her breasts slapping against her stomach as she fucked Marcus like her life depended on it, savouring each inch as her hips and ass moved up and down rhythmically. Soon needing to rebalance herself, she leaned forward which allowed her brother took a thick pink nipple in his mouth and began sucking, sending even more overwhelmingly irresistable gratification through her bloodstream.

Orgasm after orgasm racked her slutty body as she gave herself to him until eventually she was able to milk Marcus dry, her soaked pussy filling with his seed as the two collapsed, breathing heavily, next to each other. Worries of taboo, or pregnancy, or the problems of being a woman were in this moment a distant memory, as Ivy realized that what the witch had said was true: she wasn't so shy anymoire. Instead she had found her new purpose as a dedicated, sexy little cumslut, and that was a million times better than her boring old life. Rolling over and looking sensually at her brother, she grabbed his softening penis and winked. "When do you want to go again?"