The Yellow Key is the trickiest of the three keys to track down once your objective updates to finding all of them. Nothing in the world points you to it directly, and its resting spot is easy to walk past if you are not searching carefully. With the Blue Key already in hand, this is the piece that finally lets you move the main story forward.
Quick answer: Head to the north-eastern corner of the map, cross the rice fields and broken bridge to the cave near the Tailwater Village camp, defeat the Grizzly Malefact, follow your on-screen marker, and interact with the Rusted Golem lying on the ground to receive the Yellow Key.
Yellow Key location in Beast of Reincarnation
The Yellow Key sits in the north-eastern corner of the map, hidden inside a cave. You reach the cave by cutting through some rice fields, and it sits near the Tailwater Village camp. This is an area you already moved through back in Chapter 1, so parts of the route will feel familiar.
Before you head in, save your game. The path is not a quiet walk. You have to fight through a run of enemies both on the way and once you are inside, so a fresh save gives you room to recover if a fight goes badly.
How to reach and grab the Yellow Key
You know it worked when the Yellow Key is added to your inventory after the interaction. If nothing happens, you likely ran past the Golem without engaging it, so return to the spot the marker points to and interact again.
What the Yellow Key unlocks
The Yellow Key works together with the Red Key and the Blue Key to open the main gate sealing the entrance to Nushi’s Lair. All three are required at once, so the Yellow Key cannot be used on its own for this. This is the story step tied to Chapter 1, where the locked door in Subcity 03 needs to be opened.
| Detail | Info |
|---|---|
| Location | Cave in the north-eastern map corner, near Tailwater Village camp |
| How to obtain | Interact with the Rusted Golem on the ground |
| Main obstacle | Grizzly Malefact inside the cave |
| Use | Combine with Red Key and Blue Key to open Nushi’s Lair gate |
| Chapter | Chapter 1, locked door in Subcity 03 |
With all three keys collected, return to the sealed gate to progress the main quest. Until then, the Yellow Key simply sits in your inventory, waiting for the Red and Blue Keys to complete the set.
