https://wccftech.com/nier-replicant-ver-1-22474487139-endings-guide-how-to-discover-the-new-ending-e/

With NieR Replicant ver.1.22474487139… coming close to its one-week anniversary since release, some of you have surely already bested the Shadowlord and rescued Yonah. In typical Yoko Taro fashion, merely reaching the end credits isn't enough to see the full picture. We wanted to wait until our readers had time to immersive themselves into the role of Brother NieR for some time before spilling the beans on how to unlock all five endings to NieR Replicant ver.1.22474487139… .

Unlike NieR Automata's storyline, you won't be seeing the events of Replicant through multiple characters' eyes for the main game. The contents of Ending E are still something that we wish to keep under wraps, as not to spoil the surprise for fans that have been waiting a decade for this final payoff.