Black Box



A black box brought from a faraway world that can fit on the palm of the hand. Though its structure is unknown, it is said to be a fusion reactor carried by the YoRHa androids that exists in the same faraway world where the box came from.

Usage
Crafting Material
 * Equipment
 * Cruel Oath

How to obtain
Reward
 * (Event) Destroy the Machine Lifeform
 * (Event) Destroy the Machine Lifeform (Update)
 * (Event) The Formidable Engels