This is great work, avoided a pitfall that seems to happen a lot with VNs I played here. They have no real choice tree or game aspects just click and read. This does though and good concise one that fits it's scope.

I'd add some sound and music make the images and background more animated and with maybe little animations. Wouldn't even get new images just some cute sketches that bounce in and out of frame when it changes.

In general though this is a good basic Story Game.