I usually make visual novels for jams, so I love whenever I stumble upon a fellow ren'py dev (although this time my team went with unity and I had to use fungus :D).
I love your stylistic choice for your art. This way you were able to fit the necessary amount of graphics into your project without losing too much time, which is always a headache with VNs in these tiny time frames. And the best part is that they still look great!
With the worldbuilding you've already done for this, you could very well go for a full length visual novel if you want to continue this! The story so far is a solid foundation that I'm sure you could easily build upon :)
Great work!