Amazing battle system, I love it! If you continue this game an advice: in the first world I think you need to tone down the enemies, and maybe revisit the guard effect (maybe give 10 ap instead of 5).
The style is unique and the screen resolution in my opinion is perfect! The idea of Bookmarked is very original and opens up to a lot of possibilities and different worlds, so kudos!
Due to the time limitations of the jam I understand that there is no menu but I guess you'll work on it. ;-) I'm surely keep an eye on this project, well done (and five stars for me)!