This game is a nice basic game. It plays like a good demo of what the engine can do, which is in keeping with the spirit of the jam. However, it's so basic that it doesn't really do anything to blow me away. For example, Dane starts off with spells for every element, which makes sense given he's the Strongest Mage Knight of Terra; however, it's a bit overwhelming to take in, and the spells are ultimately no better than just spamming attack every turn. I can tell that you added the VisuStella plugins, too, but there's a similar lack of customizing them to suit the game, too. I understand that this is a 2-week game jam with a brand-new engine, but to take it to the next level you'll want to spend some time in the database and plugin parameters sculpting the features to fit the game.
From a storytelling perspective, it's pretty straightforward. PikaMew already did a good job pointing out the grammar issues, but I have some issues with the character's motivations and major beats of the game. Like, the opening: the knights are standing guard by the castle, but they can just go off on adventure whenever they feel like it? And what was the point of the fight with Stephen? While the story is definitely present and can be followed, I feel like it needs more refinement.
Again, this game is not bad, and with some more time invested in customizing the features and refining the story it could become a truly entertaining experience!