Ch7 we're told that the evil duke was giving her medicine. Ch8 the evil duke shows his surprise because the Empress is acting sane, so the evil duke wonders if the 'dosage' was low. In ch3, we're told that Felix believed something unreaveled had happened to make the Empress become a tyrant. This was foreshadowing the truth. These chapters heavily imply that she was being drugged by the evil duke, but it is ch14 that drives the nail in the coffin. The evil duke literally says he was drugging her wine so she would lose her sanity and he would be able to make her his puppet.
omg i totally missed chapter 14. thanks for pointing everything out (〜￣△￣)〜
i surprisingly dont know how to feel about this story and the MC's yet. i dont have an opinion on eusto yet since he hasn't gotten a chance to prove his capabilities in the story so far. im also not sure how to feel about the real julia and the one that took her body. and can i just say that i FUCKING PRAY that she'll be outted for taking over julia's body bc it would be fucked up for everyone to be giving it their all (esp felix) for someone who wasnt even their julia. if she does get outted i hope they can come to accept her for who she is or else she would be living a lie. also i believe i missed something can anyone tell me where it says she was drugged bc everyone is talking about it and i can't find it.