I watched demo video on youtube. I liked it.
The game overall looks well done and totally fine, with no notable drawbacks.
Who is an artist for in-dialoge portraits? The art looks really cute and funny (especially Rin Satsuki). Yeah, they all are big-headed and have really thin bodies for such heads... but I'll just laugh at it and smile once, I liked it. (Minoriko is exception here, her art is ok in terms of physical propotions: shoulders are wide enough in comparison with head, so she looks tall and slim with perfect posture. Unusial for her... too mighty and self-important appearance :V )
What I really-really liked are the spells of Stage 3. They, somehow... are considerably better developed? Can't really express what I think, but they look to have deep inner idea in comparison of stage 1-2, which are a bit of simple in terms of pattern. Reasonable. Spells I will be SATISFIED WITH IN MY OWN GAME.
Keep doing your project!