Kyle and his half-sister Cassie were separated by a good ten years of age. They were never super close because of this, but that didn't really become important until it became apparent Cassie was one of The Special Ones at age six. Witch, was the more popular term, no one knew how or why they started coming into existence, but some people were born and when they reached a certain age they suddenly gained magical powers. There wasn't really a lot anyone could do about it then other than hope The Special One wasn't too cruel, they had pretty much free reign over what they did.
This was rough because Kyle and Cassie's father had sort of spoiled Cassie rotten. She was used to just getting whatever she wanted, and now that she had magic powers this was much worse. Kyle was old enough and mature enough to know to not fight with his sister, but that wasn't enough.
About a year after her powers came in Cassie strolled into Kyle's room and said she wanted an older sister, not an older brother. Kyle swallowed hard as he felt his body start to change, getting smaller, smoother. His hair grew longer and his chest started to tingle. He watched in awe as a pair of massive breasts grew on his chest. As a teenage boy he couldn't help but get turned on staring at them. He felt his cock get hard and press against his jeans, but then start to shrink down smaller and smaller. He felt a sudden rush of sensation of there being... space between his legs.
He tried not to freak out and gently asked Cassie to turn him back into a boy. Cassie just smiled and said no way. She wanted her sister to teach her all about clothes and make up and boys. Kyle swallowed hard as he thought about that last one. What would all his friends say when he saw them at school tomorrow. He knew better than to throw a tantrum over this though. After all that's how his step mother had ended up a dog. She'd been stuck that way for a good four months now as Kyle and Cassie's father gently kept asking for Cassie to turn her back. Kyle would have to try for the same strategy and hope he had more success.
Cassie's father showed up in the doorway and his eyes went wide, but he didn't say anything. Instead he tapped Cassie on the shoulder and told her it was time for ballet practice. Her eyes lit up and she smiled, telling `Kylie' that she'd be back and they could go shopping later. Kyle caught his father's gaze and knew better than to complain.
When they were gone, Kyle realized something. He was closer and had more access to a girl's body now than he'd ever had before. He stripped and looked at himself in the mirror, amazed at how hot he was and how big his tits were. He felt a warm, needy sensation between his legs and reached down to touch himself. He let out a loud moan as he did, amazed at how sensitive he felt. He moved on auto pilot to his parent's room and pulled out his step mother's vibrator. He'd found it a few months ago by accident while he was looking for something in her dresser. He stared at it and wondered if he could really use it. His body was telling him to. He wanted to have something inside him, to be full.
He headed back to his room and dropped the vibrator onto his bed, not yet possessing the courage to plunge it inside him. Instead he reached his hands down and started exploring with his fingers. Soon enough the vibrator was forgotten as he gasped and moaned, his tits jiggling as he worked his pussy with both his hands, one thrusting in and out and the other rubbing the sensitive little nub of flesh just above it. As a teenage guy he'd masturbated a lot, but when he came as a woman he literally screamed and shook the pleasure was so great.
As he lay there in the afterglow, his whole body feeling like there was electricity dancing on his skin, he turned and looked over at the vibrator. He wondered what it would feel like. Then he wondered what a real cock would feel like. He realized suddenly he could have sex. Real, actual sex. Not a single one of his friends would pass up an opportunity to stick their dicks inside him.
Kylie looked over at the vibrator and thought about the life she could lead now. Maybe she'd hold off on asking Cassie to change her back for awhile...
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This is a post from the original opentgcaptions, saved by CuriousMelony, who kindly sent it to me to repost here. Original author: Joeberan Captions by CuriousMelony
Repost of a caption already on this site to add the missing image.