he following questions are divided into two categories: non-spoiler and spoiler.  Some questions will fall into both categories.  This is because future developments in the story describe different views as the story goes on.  While it is not wrong to acknowledge the information presented in the earlier stages of the series, more in depth explanations or new suggestions are detailed as it goes into the series.  Therefore for the same question, the earlier explanation will fall under "non-spoiler" and the later answer will be under "spoiler". 

Please note that the answers are based on what happened in the manga as 
fairly little can be concluded from the anime. 

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