A body modification serum

When K-T entered Emily's lab, his former room, he wasn't immediately able to spot what his sister was working on. The super genius syndrome was often accompanied by a tendency to start researching whatever struck their fancy. As such fancy machinery, supercomputers, half built gadgets and multiple chemistry sets were scattered around the room.

"What do you want, sis?" he asked his sister. She was wearing a sport bra and boxer shorts under an open labcoat.

"We got something to test out today. I got a huge grant from a pharmaceutic group. I developed a serum that uses mutated stem cells to create hyper accelerated body modifications after a single injection. It will render regular cosmetic surgery obsolete and might even let people regrow lost limbs. " She explained.

"That's awesome, you'll probably get a third Nobel prize for this. Not that they are worth much these days with how many they have to give out. I hope you don't expect me to let you cut a body part to see if it regrows though. I know our agreement, but there are limits." he warned her.

"As always the corpo side is more interested in the more lucrative aspects of the thing rather than the purely medical applications, no cutting required. This is a special request from the executives, you're not the ideal subject, but I have to do with what I have." She explained to him.

"Will this take more than today? You know that I have tomorrow off. Lily invited me to go to the beach with her. I cleared the date with you a week ago, I can't miss it for any reason." he reminded her.

"It should be fine. I'll give it to you now. It should take fully effect in less than 5 minutes and we'll do some light testing, after that you're free for tomorrow, we'll do the rest of the long term stuff in two days." She agreed and then without waiting any longer she jabbed him in the neck with an injector gun.

K-T instantly felt dizzy and had to sit down on a chair. He didn't lose consciousness, but his vision was blurry and his head spinning as the changes took effect. His sister gave him a tall glass of some sort of energy drink, telling him it would make things easier.