There is a free download web dlc.
http://www.net-ride.com/free_dl/index.php?R_km_url=waftr3
File name is 交姦の虜たち・・・［ダウンロード版］WEBアンケート特典
But it requires unzip password code.
To get code need to be here.
http://www.waffle1999.com/blog/ank/42_koukan_pk/
(Offcail website Japan IP only)
Enter...
