Jeff was curious about something and used the chronivac's usual capabilities with the package, and added something the human race could do... with knowledge and maybe a little practice. Changing Sex. Simply put most developed nations mandated a course that taught kids how to change their sex. It was possible for a kid to discover this on their own via instinct or a pedo on the net, but the general consensus was around 16 kids were developed and knowledgeable enough that they could be trusted to change their sex. Thus they would usually be given a class that tended to be pass fail on whether or not they could change their sex. The chronivac would add in more details, but this was kind of what Jeff wanted as a base. The chronivac started it's worldwide change...
His mom and dad would still be his mom and dad right? He did set the date a bit so he'd be starting the school year and the class tomorrow... how different would everything be? He felt odd tinglings in himself as he knew the capabilities of becoming female were now being installed into his flesh, he just didn't know how to access it yet... and there'd be an entire government mandated class trying to bring that side of himself out, and then bring his male self back out... It did make him a bit scared, but also aroused... his dick ended up a middle ground of being a little chubby.
Jeff woke up to find...