Agree! The duke might seem like a "nice" parent but he basically neglected his own kid in favor of the others. pigglypoof
He literally neglected his oldest cause he isn't the child of the women he loved and gave the title to the youngest for favoritism. Ahhhh. At least raise them both equally or don't straight up neglect the oldest.
Since when is this story named fool moon alchemist ┑( ̄Д  ̄)┍