Thank you! I think everyone had that game jam passion while making this, and I'm glad it shows! And yes, I asked the artist, and she used photobashing technique with some overpainting to create the detailed yet paintery backgrounds, Pexels being her source for photos. As for Godot, I asked the programmer since he set up the project:
"Yes, it did require more setup. For a pure visual novel without much gameplay, I probably would have used Ren'Py or programs specifically designed for VNs. The Dialogic 2 plugin that handled the VN part is still quite alpha and lacks features that current VN editors have. I'd recommend Godot if you're aiming for a highly customized or gameplay-heavy VN like Princess Maker, but otherwise, other VN editors are less work. Right now, I'd suggest giving Dialogic 2 some time to mature so that it stabilizes and more features are added, and so that extensions from others start appearing—the support is there, but the extension ecosystem hasn't developed yet. For example, even making the screen "flash" wasn't available in Dialogic; I had to implement it using Dialogic's extension system."
For me, it was all fun and games using Godot once he set up the project and functions, though there were couple crashes and few times weird bugs, but everything returned back to normal once I restarted Godot (like half of my text from the last scene suddenly disappeared 0_o).