Go back and read after beating the game. The clinical language of "Replicants are empty vessels" stands in stark contrast to the emotional reality you just witnessed—that Kainé, Nier, and Emil are anything but empty. The Codex becomes a lie told by the game’s own UI, forcing you to question who wrote these entries in the first place. The Secret of the "Grimoire" One specific codex entry changes everything: Grimoire Weiss.
Spend an hour in the menu. Upgrade the weapons you never use. Read the stories. The Shadowlord isn't the villain. He is just the last paragraph of a codex entry nobody else bothered to read. Did I miss your favorite weapon story? Let me know in the comments below—just keep it spoiler-free for those still on Route A! Tag- NieR Replicant codex
Weiss isn't just a book. He is the memory of a specific researcher. The Codex hides this fact in plain sight, referencing "Project Gestalt" only in the highest tiers of weapon upgrades. With the release of ver.1.22 , we got the "Ending E" material—the true final chapter. To understand what happens to Kainé in that lunar tear field, you need to understand the Lunar Tear weapon story. Go back and read after beating the game
Often overlooked by players rushing to save Yonah, the Codex is the single most important text in the game. It isn't just a glossary; it is a horror novel written in the language of anthropologists. The Secret of the "Grimoire" One specific codex
The answer lies in the menu. Not the quest log, but the .