I've been searching for this soundtrack, and just can't seem to find it anywhere (asides from the sites where I have to pay lol).

Here's the information I have found:
From: Ayakashi (a Japanese hentai game recently made into an anime; I just like the music okay?!)
Composer: Hosoi Soshi
Tracks: 41
Preview the tracks here: http://mp3skyline.com/rid-0x32c12-hosoi-soshi_-_ayakashi-original-soundtrack-mp3-download.html?ref=143&ref_sub=axident

Thanks.