As Jimmy approached his home, he saw Ashley walking down the sidewalk in his direction. Ashley soon spotted him and ran over to him. "Hi, Jimmy," she said, "Is Jennifer here?"
"Uh, no, she's at violin practice," said Jimmy, "She won't be back for a while."
"Aw..." pouted Ashley in disappointment. As Jimmy looked at Ashley, he recalled the time he has seen her. He saw her grow up into a buxom blonde babe before proceeding to have sex with Bobby. At the time, Jimmy was confused about how this was all happening and disgusted by Bobby having sex with his grown sister. But now that he had a mature mind, Jimmy could definitely see the appeal in aging up a little girl into a sexy adult. And Ashley's adult form was particularly enticing. Jimmy quickly decided he wanted a piece of that for himself.
"You can play with me until she gets back," said Jimmy.
"Pway with a boy?" asked Ashley in confusion and slight disgust.
"Sure, I know a really fun game that takes both boys and girls to play," said Jimmy.
"Is it a good game?" asked Ashley.
"Once you start playing, you won't want to stop," said Jimmy.
Ashley smiled and said, "Ok, let's pway your game." With a grin, Jimmy lead Ashley inside the house and up to his room. Ashley looked around and asked, "So is this a video game or something?"
"No, it's a physical game," said Jimmy, "Let me show you how it starts." He made a silent wish that Ashley would age 4 years physically and mentally. Ashley gave a gasp as she started to grow. Her body stretched up taller as her limbs became longer. Her clothes soon started to look tight on her body as her shirt rose up and her shorts shrank against her bottom. She looked pretty uncomfortable in her shoes now. Jimmy knelt down and pulled off Ashley's socks and shoes, allowing her bigger feet out.
Ashley gave a sigh of relief before looking at herself. At 9 years old, she was the same age as Jimmy and she looked a bit different from her 5 year old self. Her baby fat had largely melted away as she had grown taller. She also felt smarter now that she was in the 4th grade. "Did I really just become older?" she asked.
"Not as old as we're gonna get," said Jimmy, "This game we're gonna play is one in which we're grown-ups. But we have to be as naked as possible so our clothes won't rip." He was already taking off his shirt and shoes as he spoke.
Ashley felt an odd sense of deja vu. She had a feeling she had played a game like this before and she had really enjoyed it. That was probably what encouraged her to strip down bare even though Jimmy was there. Besides, her clothes were getting really tight and she wanted to get them off. She still covered her privates and tried not to look at Jimmy's thing.
Jimmy was less embarrassed about stripping in front of a girl now. He didn't mind the shy looks that Ashley gave, she was going to be feeling a lot more confident real soon. "I wish that me and Ashley were 12 years older physically and Ashley 12 years older mentally," he said.
Ashley shivered as she felt the growth start. She could feel her feet slowly stretch across the floor as her body stretched upwards. Jimmy was also growing in front of her. She watched as the chubbiness on this body melted away to reveal lean muscles. Then she felt a tingle in her body and her expanding mind told her puberty was starting. Her nipples tingled before they started pushing out on top of cones of flesh. Her hips started to round out a little as her crotch started sprouting hair. Looking at Jimmy, she could see that his muscles were starting to grow bigger and more defined. His shoulders were broadening as his face starting to become squarer. Brown hair started appearing on his chest and on his groin. Ashley watched as Jimmy's balls started to swell as his penis started to stretch farther out. The more Ashley looked at it, the more turned on she felt.
Jimmy watched with interest as Ashley progressed through puberty. Her cone-shaped breasts were starting to fill out into lovely globes as her hips got wider, making her waist look tiny between them. He could tell that her ass was filling out into a supple bubble butt that was above a luscious set of legs. Ashley let out more moans with her maturing voice as her face changed from a cute kid's to a sexy woman, her long blonde hair growing down her back. As he felt his changes comes to an end, he said in his deeper voice, "You ready to play now?"
Ashley looked at the older Jimmy and smiled. Her mind had expanded more than enough to know what Jimmy mean by 'play'. In fact, she could now recall when Bobby had aged her up so they could 'play' right up until the rings had disappeared and she unexpectedly changed back into a little girl. But now it was clear that Jimmy had the rings and he was bigger and buffer as a 21 year old than 16 year old Bobby. "I'm more than ready," said Ashley in a husky voice before stepping into Jimmy's embrace.
The two of them moaned into each other's mouths as they locked lips. Jimmy could feel Ashley's large breasts pressing into his chest as she felt his big cock poking her hips. Ashley's hands gripped Jimmy's wide shoulders while his hands traced down her waist and squeezed her ass. Eventually, Ashley broke the kiss and backed up before lying on Jimmy's bed. It was smaller than her mom's bed, but it had just enough room for the both of them and it would hold their weight.
Jimmy climbed onto the bed and positioned himself over Ashley. He soon lowered himself down, his dick meeting and then entering Ashley's vagina. Ashley gave a lustful moan. This was just as good as what Bobby did. Jimmy soon started to pick up the pace, pounding into Ashley with great enthusiasm. Ashley's moans and gasps got higher until she let out a cry as her pussy clenched and pulsed. Jimmy waited until Ashley's breathing slowed down before he started to pull out. Her shapely legs lifted up and wrapped around his waist. "Where do you think you're going?" asked Ashley in a seductive purr.
"Well, I was thinking that we could finish with a blowjob," said Jimmy.
"I'm not finished and neither are you," said Ashley, "You'll get your blowjob later. Right now, I want the whole ride." With that, she started thrusting against Jimmy, using her legs to pull him in closer.
Jimmy gave a lustful groan. Ashley wasn't like the other girls he's fucked. Most were satisfied with just one orgasm, but Ashley clearly had a bigger sex drive. He soon started thrusting back in earnest, his dick going deeper into Ashley. His grunts and groans got louder at the same time as Ashley's gasps and moans. Finally, he could feel his peak building up. "Ashley, I'm gonna cum," he grunted.
"Cum with me," gasped Ashley before she pulled Jimmy in tightly. A few seconds later, they both let out an orgasmic cry. Ashley's body vibrated with waves of pleasure while Jimmy's balls contracted and start pumping, emptying his load into a woman for the first time.
The two of them panted as their bodies cooled down. Then Jimmy looked down at Ashley and said, "You were amazing."
"You better believe I am," said Ashley before she grasped Jimmy's head and pulled it to hers. The two started making out on the bed while Jimmy's cock slowly went soft in Ashley's pussy. It was only a matter of time before the two of them would be at it again, but then someone else came into the house...