Fairly good start for a demo, though not much was showcased in what exactly this game might entail in the future, at least story-wise.
The gameplay though is pretty much playable without any hiccups, though I did notice that the TP amount did not show when lookin' through the menus outside of battle, and maybe by design but it did seem to run out randomly when walking around for too long without any battles. So it was hard to gauge what I could use in the next battle and the TP gained from actions, possibly due to high player level and easy one-shot enemies, was fairly slow, to the point I was unable to test the higher cost actions.
Other than that, pretty good designs you got here and what little was shown of the main character shows promise in what they were about.
In summary, a fine start for a game, with extremely minor nitpicks with just how short it was, but beside that it shows potential. Good job!