I think the font of the dialogue is a bit of an issue. I don't think it's a bad font on itself or anything, but you have to consider that in a visual novel, your reader is going to do a lot of reading. So having a stylized pixel font like that as the font that is being read for a long time can wear on the eyes. It's a subjective thing of course, I'm very nitpicky about dialogue fonts because of accessibility reasons and I think in typography, standardized fonts are there for a reason. Comic Sans is silly and "bad" but very easy to read. Times New Roman, the standard in academia, is a serif font, which generally helps with readability.
Again, this is a very small thing and Ren'Py has built in accessibility options that allow you to adjust and change the font and what not. I would say please just make sure to consider readability in the future when selecting the font that will be most prevalent in your projects.
Again x2, I really genuinely enjoyed your game a lot, thanks so much once more!