I always enjoyed this manga, but it recently took on a whole new meaning after my sister came out as trans a few months ago. This arc, in particular, has been quite the trip. I’m sad to see it end, but I’m happy the author is seemingly ending it on their own terms.
Can't they just show the scroll to the Association? If that doesn't work then show it to the five heavenly mages (or at the very least the Void Mage since she's Selverie's mom) and have them pressure the Association themselves. This seems like a pretty easy situation to solve.