btw playing on mac, you need to chmod -r 755 the whole folder and force play the game (known issue with game maker games when bundled for mac)
concept wise: the game seems interesting and has potential.
gameplay wise: its missing a lot of quality of life stuff:
I think one of the most needed pieces is being able to always see your characters HP ... and making some way to understand what happens in battle.. its a bit fast, could slow down a tad bit and add some texts like "parried" "defense attack" or maybe instead a battle log which is just a stream of what happened that you can see at your own leisure.
Overall I didn't connect with the characters and I kept on reading the magic spells over and over cause I forgot who was who. Maybe add very distinctive something so that the character stands out and I can get what their main role is supposed to be.
Story wise: You might need someone to look over the whole script and fix grammar / typos, it had a lot of them, I see some people pointed some out already, but I think there are several more.
Keep on going ! Great job with limited time!