The demo was very interesting. Good way to meet the characters and goob begenning for bigger story. Very good artstyle with great sprites, good BGs and CGs + nice music. I'm sure the rest of the story will as interesting and thrilling as this little part.
I can only suggest you to add more save slots. One page with only six of them is not enough. For such big game as this (+ it has a lot of meaningful choices) you should make at least 10 pages with 6 or a bit more slots each.