[quote=@babbysama]
I just couldn't believe that I was supposed to feel something for 9S and 2B and their """"""""love"""""""" when I knew next to nothing about their pasts. 
[/quote]


Well that's because it wasn't love. And considering the reveal and the whole reasoning behind certain dialog in ending A/B and the reveals therein, you know exactly enough about their past to make the entire back half of the game much more resonant. The most important stuff isn't in supplemental material unless you're talking specifically about A2's backstory which is contained within a stage play, but even then that mostly just tells you why she's so done with the Bunker and such and her seemingly out of place nightmare scene. Not once did the game deny players critical information about the characters. It just didn't spoon feed it directly and had enough faith in the player to accept more subtle characterization and themes. The supplemental material for NieR gave more information and background about the character of Nier as well as its world that were arguably the more interesting parts of NieR's/Drakengard's lore. Yoko Taro has an interesting take on game design but he's not pulling a Bungie and leaving out literally all the interesting stuff. He's weird and slightly insane but he's not stupid. 

Ending Y is the true ending anyway. 


Don't take my avatar/signature as some sort of bias towards the game tho.