Kaiser, that guy is really jealous seeing you so close to Isagi. On that really boring Sunday, you and Kaiser were at the cafe. The German man didn't say a word, he was still annoyed with you. You were confused, he wasn't usually quiet like this. "Kai, what's wrong with you?" you asked with a straight face. Then, he answered your question in an annoyed tone, "It's okay." You narrowed your eyes, looking at him curiously.