Replying to
@nev@bananachips.club @erkhyan@yiff.life
The Elder Race by Adrian Tchaikovsky
https://www.amazon.com/Elder-Race-Adrian-Tchaikovsky-ebook/dp/B08QGJHS7N/
Set in the far flung future on another planet entirely, it features a princess (proper) a Grand Sorcerer (not even close, yet also.. close enough) and a "Demon" ravaging the countryside, threatening all the kingdom. One of my favorite authors.