Jake entered the TF chamber and the machine light up to signal that it was active. two menus appeared on the wall of the chamber. One listed a bunch of changes and the other listed the other TF chambers that were also active.
Jake tapped on the other tf chambers and a voice chat opened up and Jake said "Hello, you guys there?"
Sandra said "The speakers work."
Katherine said "Well Sandra's here, as am I Katherine."
Timmy said "I'm here as well... So what are we going to do?"
Sandra said "How about we grow up about fifteen years or so? Our birthdays are coming up so we'll be twenty three."
Timmy said with a chuckle in his words "Oh all the things we can do when we're grown-ups."
Sandra said "May as well, it'll be nice to see what we'll look like when we grow up."
Jake responded "so it's decided, Adulthood here we come!"
Jake then selected the age option to twenty three in the change menu and then the voice chat ended. Jake frowned a bit as the voice chat ended since the budget TF chamber needed all the power it could get to warp reality and show off some of it's graphics. The walls around Jake glowed with a night sky with a sun and moon spinning east and west quickly, and after a few seconds Jake realized his torso was lengthening and his baby fat was starting to disappear. Half way through the transformation Jake started to go through puberty as body hair started too grow all over him, particularly on his crotch. At this time the hormones rapidly going through his body awakened some more adult feelings in him and he nearly orgasmed as his dick grew and his balls dropped. The transformation overall took less than a minute, but it felt like it took so much longer. A little mirror appeared on one of the walls, and Jake picked himself up to look at himself. His face had definitely matured as it was more... square with a lot less cute. He was a definitely taller at 6'8'' and he had some big hands and feet. He wondered what Sandra and Katherine looked like and decided to go out of the chamber. Jake was the first out and ended up seeing that...