Nana "No.7"

A Homonculus created based on Mia that was with the Iron Golem in the center room of the maze created by Trazayuya. Despite being less than a-year-old at her introduction, Nana has the appearance of an busty eighteen-year-old due to her homonculus background.

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Satou became her master after he defeated her previous master, Zen. She calls Mia, mother, due to Mia being her blood provider. She is the shield-user of the group.

(Source: Death March Wikia)