The Thirteen Factories (十三工房(じゅうさんこうぼう)) is a network of factories under supervision of F. Novartis.


The Factories, also known as Workshops, are specialised in the research and development of radical orbment technologies. Although details are sparse, in Zero no Kiseki, Joshua Bright reveals that the network has consisted of twelve Factories "since antiquity" and that the thirteenth, the Doll Studio, has been added only recently.

A common misconception is that the Thirteen Factories are part of Ouroboros. In fact, the network combined might be a larger organisation than Ouroboros as a whole.[1]

List of known Factories


  1. Kondo, Toshihiro. 「勘違いしているかたも多いのですが、十三工房は結社 の手下というわけではありません。ひょっとしたら結社より も大きな存在である可能性もあります。」

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