you start the experiment on her butt.

you realize that you still have some time before you feel the need to sleep yourself, so you decide to put a video camera in front of the one way glass and start the test. Koa is lying face down, so you decide it is in your best interest to make her butt grow. you program the nanobots to make it so her butt will grow for an hour before stopping the growth.

you don't really notice the growth, until the 10 minute mark is coming up, when she stirs a bit, and angles herself to the side a bit. her hips and butt looking just slightly flared. you decide you can review the footage tomorrow, and decide to go to sleep as well.

when you awaken, you quickly make yourself a cup of coffee and move toward the room with Koa in it. Koa is still asleep, but her gray tights are looking like they're about to rip, her white shirt is getting pushed away by the mountain that is now behind her back, and her black underwear seems to have become a thong. her denim skirt lies on the ground, with the zipper broken apart.

you decide to look at the footage. you also decide it is in your best interest to speed it up a bit, so you speed up the video times 6, making the video around ten minutes long. you can definitly see that Koa's butt is steadily growing, but it doesn't seem to bothering Koa in her sleep. she rummages around in the bed a bit every so often, but doesn't seem that impacted by the new bubble of fat on her body, however lying on her back is someting which isn't possible anymore.