This is a pretty polished looking entry! I did see that you used asset-store elements, but that's within the jam rules. Some art worked better than others (the story BGs vs the blander battlefield).
The combat was solid, though I admit, I gave up on the final fight. I felt like I was doing everything the game taught me, but still losing. I got really close, like a tick away from winning... but still lost. I just couldn't fight it again. :( (This was after quite a few attempts...)
Overall, really nice work!