While Keith and Ty recovered from their mutual orgasm and strange transformations Lizzie kept himself busy.
Ty's body was nothing to scoff at, but Liz felt it could be better. He had already improved the situation downstairs, so he turned his attention to sculpting broad shoulders and hard muscles, adding at least 6 inches of height to put his height at 6' 7"
The changes spread down his arms and legs, the bulk and weight almost catching Lizzie off guard. She was so used to that light and limber body Ty was stuck with, though minus the feline ears and the huge, melon sized tits. As if on queue the sexy and sultry slut that was Dustin made her way downstairs. She wiggled her round hips with unfamiliarity, but the way that Lizzie left her (female and wetter than high tide...) made dick and getting it the only thing she could focus on. Seeing Liz and the improved body he was sporting made her wobble.
"T-Ty? Is that you?" she trembled, but her voice seemed to maintain that sexy (or just slutty) tone.
"Mmmm, you bet little bro...err, sis." he smirked. Dustin never stood a chance, the big brute snagged her by the arm and pressed her up against the wall. His hands moved to her modest, yet plump B-cups and pinched the nipples hard. "Slut..." Lizzie whispered into her ear. He was starting to enjoy being on the other side of the gender barrier. "Your little pussy is going to stay hot and wet no matter how many times you get off. Speaking of, I want your skin to become more sensitive each time you cum, and every climax will be harder and harder to reach."
Dustin whimpered at his words, gasping when he tugged on her nipples. At his command her slit suddenly deluged with a sticky mess, like some strange little mini-orgasm, then another, and another! The pulsing sensation was starting to drive Dustie crazy. "Nnnn! No please Ty! Wh...why are you torturing me all of a sudden?"
Lizzie almost had to pause and think. Was it torture? Maybe a little, but he felt every right to turn a bully like Dustin into a slutty little sex pet, and a girl at that. "Don't worry Dustie, I'll make sure you have plenty of fun~" Liz tugged down on his pants and let his massive erection spring up, the tip wedged right between Dustin's thighs and making her squeal.
He pulled her up until he could take one of her nipples in his mouth, then set her back down so that his rock hard cock slid right into her tender, tight pussy. Dustie squealed and screamed, cumming hard and even squirting her hot mess into his lap. As promised, her skin suddenly tingled and even itched terribly in places. Suddenly just "Ty's" hand on her ass or his lips on her nipple gave her clitoris-level stimulation, and orgasm quickly builds...then fades!
Just as he said, climaxes were going to become more elusive even as her pleasure skyrockets! Dustie could only whimper and hold that his brother would come to his senses, even as he cums a quart of hot spunk into her. Nevertheless, that was a more sublime and powerful orgasm she ever had as a man.