Polar Night seems to be quite a promising VN, even just from a demo. All of the characters are fleshed out, the art is great, and the writing is decent. I did notice a few typos here and there, but overall great start to what I hope will a genuinely scary VN.
I just hope you don't give the idiots what they want and add in needless NSFW content. I feel liking adding a "Date The Character!" thing to this would ruin what you're going for. Just my two cents.
-Kallier