Reminiscent of a few other puzzle games I've seen popping up on Itch recently - but with a unique flavour. Passing island e took me a while, and was quite satisfying when I finally realized how.. roundabout.. the solution was.
Unfortunately, because of how the save works, I soft-locked myself on the next island. I believe merged the last "e" island road with the next road (was that "h" island? I can't check now), pushed the next road a bit, then happened to pull back the "e" road, at which point the h island road blocks me from getting back on the island. And since there's no reset or undo, it's now stuck.