Glass no Mori is a PS2 Otome Game published by D3 in their Simple Series (the full title is Simple 2000 Series Vol. 13 The Love Adventure For Girls -Garasu no Mori-) . The main character is making a last visit to her deceased grandfather's house, on the edge of a forest in the countryside. The forest is rumoured to be a 'kamikakushi' that steals away children, so none of the locals go near it. The main character used to go in it all the time, but was told by her grandfather to stay away.