..."I wish Corey would grow massive tits!" Corey crossed her arms over her chest and blushed. Then slapped Sean on his face in outrage.
"What kind of wish was that Perv!.. here I thought the room was kind of romantic..." Corey then started to walk and continued "I should be going home anyways. Good night!" Then walked off saying a happy good night to Sean's parents. Sean sighed and thought it was a good joke pretty sure that the wish would've accomplished more or less nothing. They were just words after all, and words they were indeed. Nothing magical besides them besides being able to implant an idea in some fairy's head. Alterna was silently watching the two and that gave him a good idea.
Alterna thought "A couple making a wish under a shooting star. how could I not make this come true." then with her alternate universe powers slightly merged a universe where Corey's breasts grew really large with the one they were currently in. No one really felt anything. Corey back home went to the bathroom to get ready for bed with a change of pajamas. As she took off her coat she noted that she could see her nipples through her shirt. The girl hadn't needed a training bra according to her mom, but she was wondering whether or not they were that big a little bit ago. Taking off her clothes Corey looked at her figure and her mind was deceiving her enough to see a curve in her body when it was more straight than curvy.
Corey sighed and thought "Damn Sean putting these ideas in my head... Either way time for bed..." Corey yawned and then getting to bed pulled herself under the cozy comforter and went to sleep. The following morning she woke up and pulling off the covers and jumping out of bed felt the slightest jiggle on her chest. Looking she saw two somewhat large A-cups. It was early in the morning so she stifled a curse towards Sean a few houses down. Somewhat curious she touched her own breasts that were rather sensitive after the night of expansion and sent shivers down her spine. Then looking at her pajama top remembered something that may be a slight problem. She didn't have a bra and her shirts were a little tight, showing as her nipples were very visible and her breasts. The frustrated preteen put her clothes on and seeing her very visible breasts put a vest on.
School that day people didn't notice Corey's breasts as she kept to herself and the vest did a good job covering the nipples. That said Corey did nearly strangle Sean as the wish actually seemed to be coming true. following school she went out with her mother to get her first bras. Turns out though that she was a pretty fast grower gaining a cup a year being the only 13 year old with C-cups. She couldn't really hide those and started getting more attention by those around her.
In high school she still hung out with Sean after school, and even shared an elective or two along with some normal classes, but during breaks when she had gotten pissed at Sean staring at her breasts she had gotten her lunch and found a spot to eat. She had bumped into a group that had an old crush Corey had in her original universe, but here she managed to get inducted into the group. Her once crush jokingly teasing Corey about her boobs although also a bit jealous a freshman had bigger ones than her.
During this time Sean had a feeling in the back of his mind that he needed to stop teasing Corey around, and maybe try confessing his love for her. However could he, Corey was hanging out with all the other pretty girls and... Sean then decided to actually try some self improvement. He got a gym membership and actually started using using it. Then...