Originally Posted by The Hag
My understanding is that the games are identical except for the Nier character model and a bit of dialog change as he is her brother instead of her father. They changed it in the English release specifically because they thought that the US audience would find the father/daughter relationship more engaging that a brother/sister one. I would have to agree.
Owner of both versions here. This. There's a few other differences, such as Kaine's dialogue actually including censor bleeps here and there, and the Shadowlord
SPOILER: (highlight to read)
apparently scales with his replicant's age. He looks like a kid when he wrecks your shit at the end of act 1 yet appears to have an adult body at the end of act 2, then young again during Ending B. How odd.