ayakashi
Ayakashi (アヤカシ?) is a 2005 visual novel developed by Crossnet. An eroge sequel was later released in 2006 with the name Ayakashi H. A twelve-episode anime adaptation was aired in 2007.
The eroge download: http://rapidshare.com/files/22811775/AYAKASHI_H.zip (pass: popcorn)