Responses
He isn't really a bad character. His morals are definitely questionable but this is an era where siblings are literally your enemies if competing for the heir/heiress position.
He does slowly start to become a fool for his sister and spoilers
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His favorability scale broke due to it being maxed out in a good way where he would most likely kill someone if they make her cry much less leave a tiny scratch on her.
Ares I know he's a bad news, his smiling is scary I hope he dies