Well, it's actually against the rules to share content here that's behind a pay wall. We're more lax about products of Japanese origins, because most of the creators in that country don't seem to mind sharing of even their paid works all too much. However, we try to draw the line at things more complicated than a manga/doujinshi, as to avoid negative attention. Games would fall under that. In addition, I remember reading somewhere that Lilith Soft, the publisher for this game, in particular does not take the pirating of their games lightly.
The most I can do is point you to this site <<
www.anime-sharing.com/forum/|here>>. The site may or may not have the game you're looking for posted on their forums somewhere. I can't tell you for sure, as I didn't check, but that's the first place I'd look.
Of course, on the off-chance you want to get your hands on a legitimate copy, you can buy it <<
www.dlsite.com/ecchi-eng/work/=/product_id/RE074787.html|here>>.