Responses
I feel like you're right based on the fact that the fl said they were close when they were younger. The mother mightve also told the brother that fl was better than him so he has to beat her to become the emperor
It could also have been their father, forcing his son to be a greater ruler or some shit like that:/
I wouldn’t be shocked if the mom manipulated the son into believing that all of the FL’s actions should be controlled by him or else she is considered an enemy. But regardless that she has to miserable.