Very promising so far. A lot of care has gone into the crafting of the maps and the artstyle manages to set itself off from the usual RPG Maker games.
The demo is a bit on the shoter side, but I like what I'm seeing in the story & characters. Vampires as more nature-focused is an interesting turn, though I wonder what you'll be able to do as a Vampire and what kind of tone the vampiric existence will take.
The combat gameplay is pretty short so far, but I think the idea to start with low and easily trackable health & damage numbers is a pretty good. It gives numbers more meaning and makes improvements and changes more trackable.
All in all I'm looking forward to see more.