I can't make any good suggestions right now. Part of that comes from not having the actual game to play, so I can't do a proper nitpick. The other issues have to do with understanding what kind of gameplay you are going for. While I do play and understand genres like Visual Novels and JRPGs, the thing that makes the good ones special is how they differentiate themselves from their kindred. For example, the Battle Network series are JRPGs with an anime aesthetic and real-time battles, while Lufia II has Zelda-esque puzzles and dungeons. They are both excellent and share the same genre, but have no similarities.
My recommendation to you is to play many different games if you want to further your understanding of them as a game developer. After awhile, you should notice the elements that feel right to you, and the ones that don't. Especially take note of really bad points, like if the interface feels confusing or sluggish, since it is terribly easy for a player to lose their immersion when they notice something is off.
The strongest point of your game so far is the aesthetics, as they look fairly decent so far, despite being at an early stage.