I am looking for this game, I found their first game on this website and I also found the CG pack of this game, but can't find the game itself. (Warning Scat)
Links:
http://www.dlsite.com/maniax/work/=/product_id/RJ106296.html
http://www.dmm.co.jp/dc/doujin/-/detail/=/cid=d_083635/
Links:
http://www.dlsite.com/maniax/work/=/product_id/RJ106296.html
http://www.dmm.co.jp/dc/doujin/-/detail/=/cid=d_083635/