@Alyseb630
Uhh you do realize Eusto was one of the only ones who still believed in the empress (until a few days ago from where the story took place) right? He stayed with her for 2 years despite her having become corrupted and if the real Julia didn't even notice that she was getting drugged, how would Eusto know? I also wouldn't call his betrayal an easy one since he was/is also suffering from having to betray her because more than being her knight, he
loved her. He wanted to keep believing in her--until she was about to execute innocent people. He had no choice but to start a rebellion and kill her for the sake of a multitude. Eusto's actions aren't wrong, although they may go against the empress. He is striving for the greater good, even if it means killing someone, now "corrupted," even when they used to be a good person whom he pledged loyalty to. This is a conflict between duty of loyalty and ethical duties and he had to make his choice. As a knight, he chose ethics over loyalty. As a person, he chose the people over a tyrant. As a man, he chose good over his love for a woman.
It is understandable that readers may hate Eusto because he is currently the force that is opposing the FL. Readers almost always hate anything that opposes the MC whom they are likely to love. But just take step back to look at the whole picture, not everything is black and white.
@Darkwolfix
It is sad that he didn't realize that she was being drugged, especially when he loved her. I'm not justifying the situation, but based on experience sometimes it's the people closest to you that don't realize/can't see something is wrong.