Key to the Resurrection Room

No known way to obtain it. The game's data has no way to get it.

The Key to the Resurrection Room is defined in the game files, but nothing in them gives it to the player: no recipe, merchant, quest reward, container, battle reward or script.

The room it is named after, the Resurrection Lab, opens without a key: you open its old door with a Bronze Detail and a Melted Fat during the story.

No known source in the extracted data.