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Multiple machine lifeforms formed a cocoon from which Adam was born - how does that work, exactly? Androids and machine lifeforms who go berserk have their eyes turn red does this have anything to do with the Red Eye?
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Does the demonic element (maso) exist in this world as well? How is it used in battle? Why did the aliens attack the earth? And why did they just let themselves be killed by the machine lifeforms? The machine lifeforms absorbed the memory data of ‘a certain human’ that was stored on the old servers, and the red girls (N2) were born as a result of that.
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Does the machine network have a concept of ‘ego’? And if so, how did its ego manifest? Who made the recovery units, and for what purpose? What kind of feelings did 9S harbor towards 2B? What kind of feelings did 2B harbor towards 9S? Why did A2 cut her hair after slaying 2B? What kind of memories did 2B leave on her sword before she was slain by A2? Do the weapons even come with that sort of system? Why did 9S give 2B an E-drug before the machine lifeform annihilation battle? Why did the machine lifeforms have top secret information regarding project YoRHa? Why did Adam talk to 9S in the end, even though Adam was destroyed? What is it that was launched by the tower at the end? Is it a rocket? Was the tower created in an instant? Or was it created bit by bit, hidden away underground? Also, does the tower have anything to do with the giant tree from the previous NieR? Why did the machine lifeforms start devouring the androids? Why did the berserk machine lifeforms start attacking the resistance camp? Do Emils (including replicas) other than the one that 2B & co encountered exist in the world? Where does Emil get all those materials from? Does every YoRHa unit have their own rooms? How many rooms are there in the bunker? So permission to use flight units is rarely granted, but how many flight units are stored in the bunker? How do the transportation devices scattered around the area work? Why did 2B need to hide the fact that she was 2E? How much does it cost to produce a YoRHa type android? Why did 2B tell 9S to ‘stop calling ma’am’? Is there any reason the YoRHa member’s outfits are based on the gothic lolita style? Please tell us about all the YoRHa types. Why are there even multiple types to begin with? 2B and 9S) are deployed at any given time? Or will there only be one of each at any given time? Approximately how many YoRHa members are there? Do they have bases other than the bunker? So the YoRHa’s black boxes are made from machine lifeform cores, but do the machine lifeform’s data and memories remain on the core? What is this “Command” organization that came up with project YoRHa? Are the androids and machine lifeforms in cahoots with each other? The timing of the machine lifeforms’ attack on the bunker via the backdoor just seems too perfect. Why do androids have a concept of leveling up? Do androids, as well as Adam and Eve, have reproductive organs? Do they use them? Is the red liquid flowing in the androids blood? Why do androids come in female and male models?
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