Quite an intriguing start, and I'm really looking forward to seeing the continuation! The art style is gorgeous, and the characters fairly intriguing, insofar as we know of them. I also like the blood detail and description during *that* scene - does this mean we're going to get quite a mature-content game?
The only genuine nitpick I have is with the grammar and punctuation throughout - there's already quite a few mistakes in this demo. That being said, I get that this is probably an early build and hasn't been proof read, so if that's the case it makes sense.
There was also an issue when you have to pick a way to escape, where the description for the right option is cut off, but I assume you know about that already.
Two questions: Are you planning on making a version for PC that doesn't have the smartphone dimensions? And, are romances going to be mature/adult/erotic or something more tame?
(EDIT: Okay I just noticed the rating was 18+ so I guess that answers my second question. lol)
Thanks, and good luck going forward! :)