Very cool concept! I liked the storytelling approach and ink based combat. The stamping of the actions onto the wax adds a lot of flavor and immersion!
At the moment, the drawing aspect seems a bit decorative since there is not pressure that exists to interrupt your drawing focus. Other games I've played before with drawing spells were realtime and therefore had more pressure on the player. I still really enjoyed it though!
The quill and action resource is really creative along with the ink surge concept. I'm looking forward to how it's going to develop and interact with the rest of the game later.
The bookmarking bits were still a little confusing to me as I'm still not sure what effects on the pathing it really had?
I also think it would be cool if the environment outside of the book was a little interactable as well such as putting out the candle lights or some other things, maybe a bit similar to hearthstones boards.
Overall very much enjoyed this little demo and am looking forward to seeing it develop further!