Go back and play Drakengard 1-3 to assert dominance over your friend :)

There's another game called Nier Replicant which they were probably thinking of

Playing in release order will always be correct. But if you want timeline order it looks like this:

Drakengard 3 --> Drakengard 1 (5 endings)

Drakengard 1 ending A --> Drakengard 2 (dead end)

Drakengard 1 Ending E --> Nier Replicant (remake ending E) --> Nier Automata Ending E --> Nier Reincarnation (finale)