Pinned: Helpful Navigation Links
The Tale of Rin: Protege starts at episode 1 and ends at episode 79.
The Tale of Rin: Book 2 starts at episode 80.
Substack now has convenient previous and next buttons at the bottom of each post. Be warned: they're easy to miss. Note that they will navigate you through administrative posts as well as episodes, so you may have to manually skip the occasional news update.