http://www.cronos.ne.jp/~natumiya/de/
Plot: Doctor experiments on girl to give her a wang and/or larger breasts.
On the site, check the Character gallery for a bunch of shots of her in various stages of the processes. There's also a demo available, but it contains no BE.
You can purchase it at
http://maniax.dlsite.com/work/=/prod.../RJ030397.html, if you can figure out how to order... my experience with Japanese DLsite is that it doesn't take most American credit cards, but your mileage may vary.