I know the demo portion is short so far, but there is almost 0 innovation from the main story line for each of these girls. Not only do you not progress with any of them, but their motivations and struggles and even how they plan to fix them are 1:1 what the Source content is. As of now I can't even say it's really transformative.
itch.io is an open marketplace for independent game creators. It's completely free to upload your content. Read more about what we're trying to accomplish and the features we provide.