The idea is cool but I do wonder if a calligraphy mechanic is the right fit for a game like this. Just going through the levels without thinking it would probably be faster and more efficient every time. Which isn't a huge knock like I still used it one of the last levels just to engage with the game fully. but it definitely slowed me down.
Calligraphy as a mechanic would probably work better if there was one big level, so that it's easier to get lost and there's more need to consult a map. This would require changing the game a lot but it's something to think about.
Still I enjoyed this game. It's definitely unique.