I told you before, Katsa. I won't fight when you're angry. I won't solve a disagreement between us with blows." He lifted the ice and fingered his jaw. He moaned and held the ice to his face again. "What we do in the practice rooms-that's to help each other. We don't use it against each other. We're friends, Katsa. We're too dangerous to each other. And even if we weren't, it's not right.