Nana Maru San Batsu

At Bunzou High School, Koshiyama Shiki, a reserved first-year student who enjoys reading and avoids attention, is unexpectedly selected by the Quiz Bowl Circle president to take part in a spontaneous quiz competition. During the event, his classmate Fukami Mari presses the buzzer and provides answers before the questions are fully stated. Observing her, Shiki notices that each question contains a specific point at which the correct answer can be determined.