No bc we glossed over that way too quick,like what was happening with her family and why did hee brother turn so evil (not that he wasn't a bad person before) towards the end? Because they explained that he wasn't acting that way bc of a curse so what was it?
From what i kinda understand is that the stepmother and the brothers already did not like her from jump bc her father cheated on his wife with Seria mother. And the eldest son is just evil like that ig
i think that his hatred for seria blinded him and that's what made him so evil. he would do anything to get rid of the "stain" and not to mention, seria did make him lose favor with some nobles when they learned of his actions against her and plus, he did lose a friendship so yeah...
So like the plot was all over the place and basically I have no idea what was the main point of why her brother was so much on lina's side.