Pride

Lord Tywin frowns at them as he folds his hands over his desk, and at his first, brisk, "Jaime," Jaime stiffens.

"Father," he says softly, and Tywin scowls.

"You are a Lannister of Casterly Rock and my son, not a mouse. Straighten up."

"Tywin," Kevan ventures, "The boy-"

"As my eldest alpha child," Tywin says briskly, "Cersei is now my heir and will be treated and trained as such. However, I have always had greater plans for your sister than just Casterly Rock, regardless of how she presents."