[That was about the reaction Kamui expected. More anger. It means that the reaction doesn't startle him this time. It also means he can think a little more clearly about what exactly the vampire means. Much as he doesn't like the idea, Kamui knows that the Subaru he knows loves Seishirou. It's just a guess, but Kamui can think of a few people that might try to take Subaru away from his brother.]