>>3991754
NTA
Not positive, but I think it's referenced in the original Japanese release of the game too. That version was called NieR: Replicant.
After the original Japanese version, there was a USA/EU release that changed the story from a brother trying to save his sister to a dad and his daughter. That got renamed NieR: Gestalt.
The remaster from a few years ago is based on the Japanese version, and it's called NieR: Replicant (version number)
Both versions of Replicant also have dialogue from Emil where he admits being attracted to brother Nier.