Jen smiled to herself, placing the rock next to her bed and laying down on the silk satin sheets that she had wished up for herself. Her need ever present, her hand slowly snaked its way down to her waiting pussy, which ached both from overuse that day, and from its desire to be filled. Slowly and deliberately she began to stroke her outer lips, before inserting three fingers into herself. She moaned in pleasure, her pace increasing as the feelings began to overwhelm her.
"What the fuck!?"
Jen glanced an eye towards her door, which she had unwisely left open. There she her younger sister Zoe standing, both somewhat repulsed and somewhat intrigued by what she was seeing her older sister doing. Jen got a nasty little idea in her sex-starved mind. She needed a cock, and she needed it now. In lieu of anything else, it seemed, Zoe would have to do.
"Wait till I tell mom about this.." Zoe said, about ready to walk away, when Jen grabbed the rock.
"I wish you'd come in here, close the door and lock it."
Zoe suddenly stopped halfway out the door and found herself drawn back into the room. She shut the door quickly and turned the deadbolt, preventing any unwanted entry into the room. "Wha...what are you doing?" Zoe asked, suddenly frightened.
"Having fun," Jen replied, a naughty smirk crossing her face. "And to that point, I wish you'd take off all your clothes."
"Wait...why am I...how are you..." Zoe kept stammering with questions all the while stripping off her clothes. Jen sat back and admired her sister's body. It was certainly smaller compared to her own exaggerated proportions, with a slightly poochy stomach and perky B-cup breasts. But as much as Jen wouldn't have minded some lesbian foreplay, she still wanted cock.
"Good...now...I wish that you would slowly transform into the boy I'm picturing right now."
"Wait stop!" Zoe screamed, before she was overcome with an intense wave of numbness. She watched the room shrink as she slowly grew ten inches, towering over the much smaller Jen who had stood up next to her. She looked down to her amazement, and saw her breasts melt away into her chest, replaced by hard firm muscle. Her abs were next, rounding out to a solid 8 pack, as she felt the muscles throughout her arms and her ever broadening shoulders expand and fill with power. A rush of wind went through her hair, and alarmed she glanced up at the full bodied mirror to the side. Her long black hair had ebbed away, replaced by a short, conservative cut, but retaining its black color. The makeup on her face disappeared, as hard angular lines chiseled themselves out of her rounded feminine features. She felt her chin, feeling the stubble that grew their, as hair sprouted all along her arms, chest and legs. She let out a huge gulp of air, seeing the Adam's Apple that had grown there, and then almost immediately let out a baritone moan of pleasure. She looked down as her vagina slowly closed up. Her clitoris extended, growing out several inches, while a sack formed beneath it. Two golfball sized objects fell into the sack, as her penis finished forming.
The transformation complete, Zoe stood back, flabbergasted at what had happened. "My," Jen said breathily, falling to her knees, "You turned out better than I thought you would."
Zoe was about to complain when she felt Jen's hand close around her shaft and slowly begin to stroke it back and forth. "Looks like you need some help with that," Jen said, before closing her lips over Zoe's newfound appendage. Zoe's mind turned to mush as it was soon lost in these newfound feelings. As Jen continued to suck Zoe's cock, she held the rock up and whispered in between strokes with her tongue... "I wish Zoe forgot she was ever a girl, and was instead my incestous brother, Zach." There was a flash of light.
Zach smiled as he felt himself building up in pressure. Reluctantly, but eager to finish off, he pulled his sister off his cock and placed her in the bed. He then mounted her and drove his penis straight into her waiting pussy. He smiled through the pleasure, thinking to himself how great an idea it had been to start an incestous relationship with his sister...
