Haven’t heard of it, but YAY for an urban-fantasy crime drama! I’ll bookmark it and check it out soon.
The magical war sounds like a fun idea, but for me personally, I’m weary of the concept of "a secret war somehow unnoticed by Muggles."
The Spanish are well known for slaughtering whole villages of Filipino civilians because they were openly pagan, specifically
to traumatize others into converting. I mean, if the village next door gets executed to a man, you’ve lost the bare minimum of one shaman/priestess, at least one apprentice, one village chief who frequently had a religious/magical position as well as political, one midwife/healer who ALSO frequently worked with the shaman, and at least two or three elders with a host of generational (and frequently magical) knowledge. So in my world of Moonflowers
which is "Like Reality Unless Noted,"
the Spanish conquest WAS the magical war.
Loss of people/culture/resources = loss of magic.
Similarly, the only "secret" about Moonflowers’
loss of Filipino magic is the same thing that happened in real-life: How the Spanish conquistadors wrote their version of history with a shitton of propaganda to reinforce their rule. Most Filipinos think our ancestors just sat there cowering and let the Spanish shoot everyone and take all our gold, but actual history notes that they took advantage of our constant feuding and pit a lot of tribes against each other, like a medieval version of The Sopranos.
(So basically, Game of Thrones’
War of the Five Kings with a LOT more than five kings.)
I’m thinking that the community-wide losses, especially in the Manila/Maynila region, would have cut off the Tagalog gods from their followers and straight-up traumatized them into retreating to the Otherworld, except for small pockets of their followers’ remnants and post-colonial revivalists.
Meanwhile on the mortal end, Moonflowers
’ version of the the Boxer Codex would have recorded some Filipino magic, but this also means a lot of Filipinos DON’T WANT TO READ IT because the Spanish keep calling it "ridiculous and primitive."