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The First Mikado City Middle School (三門 市立 第一 中学校, Mikado-shiritsu Dai-ichi Chūgakkō ?) is a school in Mikado City. Located southeast of the Forbidden Zone, this school was closest to the area affected by the first invasion. The invasion made the school lose 30% of its student body. That resulted in a gloomy, pessimistic atmosphere at the school. Most C-Rank agents that aren't important to the story come here.[citation needed]