This story is not for anyone under the age of 18 ( all though this is probably cleaner than most other MPCs)
This is not child erotica although it does feature Age progression from as young as eight.
This story does mention incest briefly although show disagreement with the concept.
There is not allot of explicit details but does contain amounts of small erotica.
This story was written by MC1R (nothing to do with the band abbreviated to MCR) and should always be featured as such.
Inspired by Master PC written by JR Praz

MASTER PC: Growing Up Fast part 1

Jessica walked into her brothers room an sat on his desk chair. He brother was skiing with some friends and she didn't think he'd mind her going on his computer whilst he was away. She clicked the power button and slowly her brothers computer flickered to life. It was an older model computer, made 2006 and it still ran windows XP. It had only 1GB of RAM and your basic 500GB hard drive. Of course Jessica knew none of this, she was eight. Once the old machine had finished loading Jessica took a look across the desktop. My computer was in the top right corner. Bellow that was My Music, My Photos, Rubbish Bin, and various computer games scattered across the screen. Jessica looked trough these games until she came across one that looked interesting. It had a smiler icon to the my computer file, except the fact it had "Master" written across it in large letters. Jessica opened the file and after a few seconds waiting a text box appeared on screen. "Welcome to Master Pc...... Please Enter user's name" Jessica inserted her own name and a 3D rendering of herself appeared on the screen. "Cool," she exclaimed "Must be one of the RPGs James is into.". To the left of the render there were various tools and above it was the standard "File, Edit, ect" menu. Jessica looked at the rendering, she looked scrawny. She considered using an eight year old avatar, but decided an older one would look better. She opened up one of the tool tabs labelled "age" and a slider appeared. Jessica played about with this for several minuets, sharing how she would look aged 15, 30, 45, 80. Finally she settled on 28. Her render was now five foot eight, with long brown hair and taught, perky D cup breasts. 28 year old Jessica also had high cheek bones and large shining lips. In Jessica's opinion, when she was older she would be HOT. Another text box appeared and read "Would you like to confirm changes?" Jessica pressed the OK box and waited for the other aspects of the character creator to load, but the never did. Jessica was just about to mutter a disappointed damn, when she felt a throbbing in her legs. She went to look down but before she could she was squirming as the throbbing spread across her body. She stubbed towards her brothers full length mirror to see some weird 16 year old girl staring back. Jessica went to turn to see who this girl was when she realised it was her. She was a taller, perkier, bettered endowed version of her self. The T shirt she had been wearing was now a belly-less tank top and her shorts were, well, short. She brought her hands up to her now B cup breasts only to feel them grow from within her hands. Her shirt, which was already under strain gave in and burst, leaving her D cup breasts uncovered and dangling free. When she looked at the mirror again she was shocked to see the 28 year old from the computer looking back. She inspected herself carefully, ever nook and carny identical to the render. She went over to the computer and clicked on a new tab this time it was one labelled: clothing. She scrolled through until she found a classy female business suit with a low cut top with jacket, and a knee length skirt. She chose a pair of 3 inch heels for her feet and when the conformation screen popped up she clicked OK. Suddenly, much quicker than before sheets of fabric appeared, first clinging to her breasts, then making its way back down the rest of her body. She looked over at the computer again then notices some tick boxes: View Defaults, Changes not noticed, Changes Pleasurable, Omnipotence. Jessica, still partly with the mind of an eight year old didn't know what the last word meant so didn't risk clicking it but she did tick the other three. Almost instantly new text appears in all boxes. Default clothing: None. Default age: 22. Jessica may not be the smartest kid but even she knew her own age, she was eight, not twenty two. She looked trough the tool until she found one titled bio, and opens it. It read:
Jessica Sarintano, born march 4 1990. Lived a normal life until June 13 2009 she was baby sitting her younger brother... 
That couldn't be right either, she only had one brother and James was ten years older than her
...And he used the Master PC.exe to reverse their ages and gain dominance over her. Before doing this he abused her 16 year old self in a 38 year old body of his own... 
This was sick Jessica thought, could her brother be so twisted?
....she has lived until this day ignorant of that change.
Jessica backed up and decided it was time to mess with someone else rather than herself, and she open an new window with her brother in it. His avatar was moving back and forth rhythmically. He was FUCKING, THAT LITTLE SHIT! She was about to reduce him to his original age when she had a better idea, first she needed to return to her own page though, she was still ignorant of allot of things on this page. She opened up her mental tab and slid intelligence up to full. Suddenly all knowledge in the world flooded into her brain. She screamed, it was too much, she shifted the slider down to half and relaxed, even though she wasn't all knowing any more, she was still the smartest person on the planet.
She went back to her brother page. He was still fucking. "Good," she thought, "Now it'll hurt him more" first thing she did was shrink his penis, at this point it was ten inches but she thought the original half was much better. Suddenly the motion on the screen stopped. The avatar appeared to be pleading with someone before it broke down crying. Jessica laughed then reduced him down to a fifteen year old. Jessica decided it was time to test out the "pleasure" side of the transformations. She clicked back onto her window and opened the breast size tab. She increased it to an E cup and also changed her clothing so it wouldn't burst. Then she saw it again the omnipotent tick box and she giggled. "I could have major fun being almighty" she ticked it and pressed enter. An orgasm of power flooded through her and her breasts started to swell before he glowing, deep blue eyes. "Yesssss" she screamed and pleasure took over. She grabbed her breasts again and she orgasmed again as they grew in her hands her once non existent breasts now weighed her down and fifteen minuets later, after relieving herself Jessica muttered, "Oh yeh, I could have some real fun with this."