[Machine Translation] A miracle happened! A piece of paper with the answers to tomorrow's test came flying through the window. Almost everyone in the class gets a hundred points, and the students beat up the violent teacher using the teacher strategy. In addition, the internal report is posted in the classroom, and the school is in turmoil. The key phrase is "I don't need a test. The Double-Two Detective Boys also appear as rivals, and our own Eiji and Aihara also play an active role. This is the fifth installment of Osamu Soda's Mystery 2A Detective Bureau! From elementary school level.