During his quest through the three sub-towers, 9S uncovers their secret documents.
The first is that the black box installed in each YoRHa android is actually made from the same materials as the core of machine lifeforms. YoRHa androids and machine lifeforms are not that different from each other at all. This essentially makes YoRHa units reused machines as the idea of equipping them with standard AI was deemed too cruel considering they were meant to be cast away.
The second is that the war between the androids and machines has been going on for centuries because there is a system in place to make sure that the androids never get to destroy the machines completely. Near the end of every war cycle, a backdoor to the existing Bunker will trigger to open, allowing for some sort of virus or infection to seep in an wipe out all YoRHa androids. That’s when it’s time to switch out old YoRHa models and transfer their combat data into a new generation of androids. By purposefully allowing the Bunker to be attacked, the current set of YoRHa units will be annihilated along with all of the documents surrounding the project. This is a crucial part of the deception that humanity is still alive and well on the moon.
The weight of having lost not only 2B but the rest of the YoRHa members along with the shocking discoveries that lie in the Tower take their toll on 9S’ mental state.
Platform: PlayStation 4
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