If he was a cat he probably would have hissed angrily as Keith snapped back at him. Him retaliating alone was enough to get him demoted. But now that he was walking away, it infuriated him more. Kaname snarled, tail raising high above his back, his ears shoved forward and fangs bared. He was truly pissed. If anyone had known him for a very long time, they would have been scared, since Kaname is not one to show his inner emotions much, especially not the strong ones.
The assassin intercepted Keith, standing in front of him, his head raised above him. "You selfish brat." He snarled. "The needs of the many outweigh the needs of the few. You hunt for the pack first and then yourself." The assassin rarely gave his loyalty to others, but he had grown fond of the pack. That Keith was being this selfish was pissing him off, fueling the anger and frustration that had been growing in him ever since Jinx had gone mad.