I don't get it, so is he like nice or not?

He is not . She was right when she implied that every single one of his action is carfully planned to help him reach his personal goal. He perceive other like a pawn on a chess game.

Yes.. I have to agree.. as she explained all his actions are calculated.. from my point of view he's using the opportunity to solidify his position and he chose to send those flying swords to show that he is powerful and no one can question his authority..