May 1998. Koucichi Sakakibara just arrived at Yomiyama from Tokyo a month ago. Due to a collapsed lung, he was confined to the hospital until he is fully recovered. 3 classmates of his new school, Yomiyama North Junior High School, specifically Class 3-3; arrived to welcome and prepare him for life there. Class Officers Tomohiko Kazami, Yukari Sakuragi and head of Countermeasures Izumi Akazawa. All of them ask Kouichi bizarre questions which causes his first seed of suspicion of his school, especially Izumi who reacted strangely after shaking his hand. When Kouichi is...