第29話: Bureau of Proto Societyは厳格な管理下における人類の地下での存在を探る。

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Planning, Script Writing, Director: Yasuhiro Yoshiura Character Design, Animation Director: Atushi Ikariya Animation Production: Studio Rikka/TRIGGER In the far distant future... Humans are living in the underground shelters under the complete controlled situation. "Why has the world gone to ruin, and what have made humans stay in the shelters?" Every day the members of BUREAU OF PROT SOCIETY debate the cause of the fall of the world from the past documentary videos...probably. (Source: Animator Expo Official Site)