Chito is shown to be sent away by her grandfather with Yuuri presumably due to war, as who in the chapter hometown before the events of the series. Chito and Yuuri use a Kettenkrad to journey through each layer with minimal supplies, including an Arisaka Type 38, Chito's Journal, food, and their clothing. Little is known about Chito's life before the series begins, however she likely earned a somewhat higher education before civilization fell. Despite her ability to read and use logic, she is less capable with firearms than Yuuri.
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