We’ve turned into a Hive, things are getting serious.

Well, you're generally right, but, as they say, there's one nuance in the design. Which you may have already guessed, remembering that not just anyone, but Her Most Excellent Majesty Camistella, likes to ride the horse.

I guessed, but not because of "Her Most Excellent Majesty," but because the "horse" didn't have a picture, similar to the "gap"...
But overall, it's quite strange... I didn't even immediately understand about your Nanai temple... "Spend time with the priestess"... You can spend time in different ways... I initially thought it was a confessional...