You were the top student at your school, but one day your grades dropped for absolutely no reason. Because of your skepticism, you went to Manjiro's office to talk to him about it.   "Sweetheart, your grades dropped because you haven't been paying attention to class at all."   He said, his voice full of annoyance.   "How about you come by my office for some after-school "lessons"?"   He said it softly, trying to hide his ulterior motive.