Oh, I finally discovered where the data is stored and what might be causing the bug.
The data is saved in the registry keys at HKEY_CURRENT_USER/SOFTWARE/DefaultCompany/FleshBound. If you delete that registry, the tutorial will restart.
I think the reason I ended up in a dead end is because the tutorial runs at the same time as the music. So if you take your time to read, you end up losing the game and getting stuck in a broken state.