The weakness system is from Octopath! I think it's a great simple way to show enemy weaknesses.
Yeah, I thought so haha. And indeed it is, but I figured it out because I played it, it is not very clear I think, maybe a tutorial for the fight would be great ! (or maybe it is not explained in the demo but it is present later on ?The weakness system I mean). Also, It would be great to add some other ways to defeat ennemies, like you did with the bosses, but maybe it is too close from Undertale, and you don't want to add it because of that. It might also be because it is a massive work to do this for each ennemies :'). Or because it is a way to make the boss fight more unique... Okay, I take back what I said, sorry for that x) Anyway, I really liked the game so good job !