itch.io

twine saves should transfer over between updated version, however past chapters are going to have side scenes added to them so for new updates its fair to just start from the beginning.

I'm not sure, I think they get lost on the browser version though

That's the main reason why I added the SKIP function, so you should at least be able to jump ahead to the new content if you don't feel like playing through again (of course, then you'd miss the new side scenes)