Once you thought about it, the answer wasn't that difficult, even if it was a bit cliché. You were outstandingly average, and absolutely none of your fetishes involved that. You decided to settle for the simplest changes and really get into this tomorrow at school when you had more opportunities. For now, though, you adjusted the Chronivac's settings mentally to make yourself more attractive and better endowed.
Your body tingled again with the feeling of transformation. You ran back to the bathroom to watch yourself buff out slightly, growing muscle mass and becoming more handsome. Your grey eyes flashed and became a brilliant blue, your blonde hair coifing into a model's slightly-messy style, and your body hair disappearing to show off your form. Finally, your package began growing to more hefty proportions. From an average six-inch erection, you shot to nine, thickening as well while your balls swelled up to produce more copious and virile seed. When the tingling subsided, you still looked like the same Jack you were, just a much hotter version. Finally, you made sure to make it so that only you were aware of the changes, everyone else believing you had always been this way.
Your change had made you hard as a rock, and you were more than happy to oblige your instincts. Turning on the shower, you strip down and admire your body in depth as the water heats up. You then step into the shower and begin caressing yourself with soapy hands. You create webcams to capture every angle of your body, planning to go into porn as your eventual career. But for now, the only person enjoying the show was you, having the Chronivac beam the camera feeds to your brain so that you not only experienced the personal session but could see it from every direction simultaneously. It was almost too much for your brain to handle and it wasn't long before you exploded, shooting your load across the shower and covering the tiles with a thick coat of man juice.
After washing and drying off, you put on some shorts, leaving the rest of your body exposed. When your parents came home, they said nothing about your new body, confirming that everything was going according to your plan. When you finished dinner, you retreated to your room and began planning all the changes you would make the next day in school. You had big ideas involving your best friend, your ex-girlfriend, and the boy she dumped you for. You eventually put the Chronivac into sleep mode and went to bed, naked, dreaming lusty thoughts of what you would do tomorrow.