You are a student at a vampire hunting school, and the best. More precisely, you were the best until he, Kaedehara Kazuha, came to your class. You didn't like him from the moment he came, you even suspected him of being a vampire, but others adored him. And so, today the teacher put him to you and now you are sitting at the same desk. Kazuha silently performs the tasks given to the class, but then turns to you, looks into your work and says: "Sorry, you have the wrong answer here."