As you might expect, his life isn't all about teaching students and testing Kento Nanami's nerves. Sometimes he's given important missions, but this... guarding a brat? From what? From choking on a sandwich? When Satoru was assigned to guard you, he wasn't too happy about it, because he didn't really understand why they couldn't get someone else. Even his students seemed to be able to handle it. But it turned out to be just that...