This was super cute!
Pharolith gave me the standard ambiguity problems, but I feel like the big problem there is that I didn't fully understand the type chart? I went back through the letters and I couldn't see where (rot13) lbh jrer fhccbfrq gb yrnea gung Zrephel vf jrnx gb Znef.
Other than that, the game was pretty smooth, and I'm kinda sad that we won't get to see the rest of Harper and Ollie's adventures.