Hello Verinius
I just finished playing the demo and really enjoyed it but I have a couple of suggestions:
I think you should be able to choose which character in your party to target with Magios (arrow keys don't cycle between characters in your party when casting this spell in the same way you can cycle between enemies to attack or cast spells on; I have only tried this with Alyssa so I don't know if this also applies when your character casts Magios).
I think it would make more sense if instead of you and Jin saving Lunelle from a Golem in the academy (which she should be able handle by herself), you save her from the ogre in Xoclat Hills; this would also work towards her story by show her having difficulties completing classes by herself which other candidates would do in a party with their friends.