Ty gasped as she came to a climax, it felt so much more satisfying than when she'd played with himself as a boy.
"Ty?" It was Dustin. Ty automitically knew that he had not been affected by the changes, so far. He knocked on the door sheepishly. "Can I come in?"
"Not yet," first Ty rearranged his room to better reflect her new species and gender. Then she wished that nobody would ever frown on nudity on any species, she had no intention of ever wearing clothes again. Though ty had intended to go through all of the species and change himself (now herself) to them on a whim she'd decided to remain like this for a while. "Now."
Ty rubbed her paws all over her new body, luxurating in the sensation of the fur all over her body and ehr new sex organs. Dustin entered and gasped. "Come in and close the door behind you," Dustin was completely under her control and did as he was told, "you will do what I say when I say."
Ty wished away Dustin's clothes and frowned at his puny dick. That just wouldn't do for what she had planned. She wished it was bigger, Dustin's dick grew to one foot in length and his balls swelled to the size of baseballs. While she was at it she gave him back his foreskin.
Dustin gasped again and reached down to grab his new cock. Ty made him even more muscular than before, purring with pleasure as she imagined what she had planned for him.
"What the hell?" She made her brother a cat man, the only cat man on earth as it was. Dustin became a half man half lion, complete with a mane.
"Ty what are you doing?" Dustin clearly enjoyed these new changes and his raging member showed that he knew and appreciated what was coming next.
Ty threw herself down on her new bed and spread ehr legs wide. She screamed. "Fuck me!" Dustin had been waiting for this since he'd realized what Ty had planned for him.
Dustin roared like the animal he was in every sense of the world as he ejaculated into Ty. Ty gasped from the sensation, he could never have imagined anything like this. She wished that she too could roar to demonstrate her feelings.
Dustin fucked her for almost an hour before his erection collapsed. Ty had been about to with that Dustin ahd more endurance before falling asleep.