I think this game has a pretty solid engine, however, there were quite a lot of things that bugged me. First was the long pauses in dialogue. They are not needed, they just make you want the dialogue to end more quickly. Second was the walking speed. It's insanely slow and makes progression really monotonous. You could fix this by adding a run button. Third was the graphics. I guess I'm not the sort of person to critique this but they could have used better contrast and maybe a bit more color. The in-battle spites were very lazily upscaled as well. The battle system is pretty impressive. However, it severely lacks an escape button for how often you are going to get into a random battle.
It's a nice engine, but could be pretty refined, so I give it 3/5 stars.