I do like father Nier much more than brother Nier, from what I know about the latter, but I think they should have just gone with father Nier for all versions. As awesome as father Nier is, Kaine being the love interest is a bit creepy, when you consider that she's only five years older than his daughter at the end of the game and Nier is in his fourties.
That, or made Kaine older in the Gestalt versions.
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