Was Usman dan Fodio an inspiration for the Hunter?
Not directly. I know very little about his history or that of the Sokoto Caliphate.
The Hunter was broadly inspired by a combination of various nomadic confederations - most obviously the Mongols - and a variety of religious visionaries and nation-builders, such as Mohammed and Napoleon. None of these inspirations was too close: more resonances than parallels.
And, of course, the Hunter's ultimate fate was inspired by
Any word on the Hunter arc? I need to get some LoRaG in me.
I'm aiming for mid-February, subject to maps getting completed. Too much going on before then to be able to post them in a regular sequence.
Could potential Pliri missionaries in Japan frame it as a different kind of Buddhism?
It is similar enough (as previously noted) that they could be construed as variants of the same thing.
Although the Japanese would object to a foreign religion, they would not object as much to Buddhism wearing a new hat.
If you think that they are too different from each other, some Japanese people thought that Christianity was a new form of Buddhism.
I've had various discussions in this thread (and offline) about whether and how Plirism could spread to Japan.
I've never settled on a definite outcome, mostly due to lack of familiarity with Japan in this period and also because it will be an Act III question, so I can still throw around ideas for a while without needing to make a definite decision.
One likely possibility is that Okinawa itself will convert to Plirism. They're the main point of contact with Nuttana traders, and there is a definite advantage to converting to Plirism if you're trading with the Nuttana. (They will offer better deals because they trust you to honour the contracts, and it also plugs you into their information network). Plirism also syncretises very easily with their indigenous religion, which helps.
Whether that spreads further into Japan is a harder question, of course. Another possibility I'm toying with is whether some Plirites will interpret Buddhism as a forerunner to Plirism. That is, a suggest that Siddhartha Gautama was a past life of the Good Man, and that he developed his insights further and proclaimed the true path later. I have some reservations about that idea (such as not wanting to be seen as disrespectful to any real-world religion), but it remains an idea I may develop.