On his way towards the upper level he spotted a toddler in the store, apparently there while his mom looked for something for her nephew. The toddler boy was about two and wearing small jeans and a t-shirt, the former over a diaper or pull-up of some kind. He looked liked he was getting impatient too, hardly amused by anything in a comic store. "I guess Eve can wait a few more minutes," Ty said to himself.
As he watched the toddler he began to will him to grow older, making sure his mind aged as well, but that the kid was aware of the changes. But only the kid, who's name was Devon, would notice. And Ty himself of course. And so he watched as Devon went through a sudden burst of growth, aging from two years old to five in an instant. Suddenly he'd grown a whole foot taller, going from 2'7'' to 3'7''. Not only was he taller, but he was slimmer looking too, his babyfat diminished and looking more athletic. Devon could also feel lots more knowledge flow into his head, and he wasn't sure if he should be upset with the sudden growth, or excited. His clothes were smaller though, his shirt small enough to show some of his flatter stomach, and his jeans having ridden up his legs a little.
Devon was only barely getting used to the changes when Ty had him surge forwards again, growing another three years older. Devon, now an athletic eight year old, stood almost a foot taller yet again, now at 4'5'', and he was gaining definite tone to his slim body. His clothes were now much smaller, his jeans torn at many of the seams, showing the diaper that was now useless and equally as small. Finally his t-shirt was tight against his torso, leaving his midriff exposed, which was flat and slightly toned, showing a slight four pack when he breathed. "This is so cool," Devon muttered to himself, talking considerably better than he had been just seconds ago. "I wonder if it'll happen again."
As if in answer to his question, Ty aged Devon yet another three years. This time though he had the surge go a little slower and Devon looked down to see his legs lengthen and thicken, making him look odd for a second as an eight year old with the legs of an eleven year old. The rest of his body quickly caught up though, leaving him a lean and athletic eleven year old, standing 5'2'', and wearing torn clothes many sizes too small. His t-shirt was stretched and tearing and painted onto his upper body, defining his pecs somewhat and leaving most of his torso uncovered. He looked down to see his four pack was a good deal more visible. Then there were his jeans which were more like shorts now, stretched across his legs and butt, the latter of which still encased in the too small diaper. Devon's hair, which had been short and blond as a toddler, had retained its colour but grown out into messy skater style.
In an instant Ty made it so Devon knew what had happened to him, and who had done it. He also fixed Devon's clothes, resizing his jeans and t-shirt, and changing his diaper into a pair of boxers. He also made it so that Devon would now be able to change his age to anything that was younger than he currently was, and back. "You don't have to stick around while I look for something for your cousin Devon," the boy's mom explained, "You're eleven, you're old enough to leave mommy's side for a little bit."
Not needing any more confirmation that this was the new reality, Devon dashed over to Ty and thanked him profusely. "This is so cool," he said, "Thanks dude."
"Don't mention it," replied Ty, "See you later."
With that Ty turned towards the stairs to go get Eve.