I'm on a laptop which is prob why it's more apparent to me. idk exact screen size but when screenshotting it says it's 1980x1080. There's just a lot of unused screen space with the text squished in the middle. If I make the text bigger it fills the box instead of utilizing the large amount of empty space. This is a screenshot with the text at max size in the settings.
That said I did finish reading and it's just as good as I remembered. This was one of those WIPs I lost track of back when and could never remember enough about it to find it again lol, glad to see it finished. I was so invested, forgot it was just a demo until it was already over! I saw another comment where you said this is the first 11 chapters which is very generous since usually we only get the first few so thank you! The text size is less of an issue for me on mobile which is where I'll likely be buying the full game when I can.