may i ask where i could find this demo? could not find it on google. just found out that its at the DVD from TECH GIAN called スカートめくり体験版.

It's here: http://www.megaupload.com/?d=Q28G64HE
It contains an installer for the demo and some wallpapers

Just the demo itself is here: http://www.mediafire.com/?hmmztzqlm0z

thanks for your help. now i have an idea of the game mechanics. quite impresive i have to say. im excited to play this game.