One of my favorites from the Jam!
Beautiful aesthetics and music. I love the possession mechanic and the variety of enemies. However, I encountered a bug with the first boss, I believe. If I touch the book turned into a gargoyle, it teleports me with the boss. However, when the possession ends, I return to the previous room. If I then touch the book with the player, it no longer teleports me, but the boss's health bar stays active for the rest of the game. I hope I have explained myself.
I haven't been able to finish the game yet, but I've really loved it so far. Great Job!