Didnt find any mention of this in the thread yet, so I thought I should try to make some sort of post. The following are bits and pieces from an H-game that should be released on 25.1.2008(common date for various eroge releases)
The game(Himekami?) will feature various different
fetishes including breast expansion.
http://pinkquestion.com/main-menu.html
Meet the characters:
http://pinkquestion.com/himekami_kyara.html
As for the evil conversion, I might be reading into things bit too much but the first attachment should give some insight. Vampire biting one of the protagonists. The following pictures are from the demo video for the game.
First the girl bitten by the vampire is shown briefly followed by what I think to be the girl as vampire thingy. Same deal for one of the other girls.
Anyway, this game is certainly something worth waiting for.
Hopefully my post isnt too messy.
Link for said demo video
http://kokoron5.madoka.org/mirror/h/...i/himekami.zip
EDIT: Had to change the format for the vampire bite picture.