Sadly an empress can not overthrow a King... So...... Damn the royalty logic shit. Unless she kills him and blames the mistress for that shit Artemis
Maybe would be a possibility if she was the daughter of the emperor and he inherited the kingdom to her, but that it's not the case, because originally from birth she has no ties with the royal family so it's impossible
I’m gonna hate this if she falls for him... -_-