Interesting RPG Maker game- I think it's the first time I've played an action game built in RPG maker. You have an impressive amount of content for a game-jam period. It feels like there's a lot of lore and story in this game, with more to come! It started off a little confusing, but made sense as it continued on.
There are a lot of well-scripted cut-scenes throughout. The long open cut-scene in particular helped build a certain mood, before the inevitable disaster struck. I do think that there might have been a little too many cut-scenes... at some points I was itching to have some control. But I'm glad they're all scripted with effects and movement onscreen.
The combat itself interesting. I was pretty bad at it at first, but once I started using the strafe key, it definitely went better!
I made it through the prologue, and during chapter 1 I failed several times at the start of the battle stage. Between the number of enemies, obstacles, and traps, it started to feel more frustrating that fun. And having to repeat a fairly lengthy dialogue didn't help. I may go back and give it another spin later when I have more time.
I did encounter one bug... sometimes, my character could shoot during cut-scenes if I used "Z" to advance the dialogue.
Overall, great work! I can see you have a lot planned for this game, I hope you keep working on it!