Thread:Shikifan/@comment-29427540-20180524160957/@comment-27971189-20180703153342

Quetz being Alter Ego most likely referencing Tezcatlipoca.

On myth, Quetz has siblings, technically 'all is one deity'; one of them is Tezcatlipoca, who is his direct opposite. IIRC on Aztec myth there are stories where Tezcatlipoca destroy Quetz creations for reason that he is god of destruction for Quetz creations, as simple as that.

Not exactly a lovely childhood when your brother crushing your works, just because.

If it turned out to be true, I can see Nasu behind Quetz as Summer Servants pick-- not everyone knowledgeable to pull an Alter Ego to make reference of childhood memories from Quetz unless its the writer itself.