what was written in the codex

Exploration Stage: Room of Fate
From: Detective
Description: In order to read the descriptions in the secret manuscripts of the Five Wise Guardians, we need a special exposure fluid. Hopefully we can find it somewhere in town, but if that's not possible, we'll have to make it ourselves. But there may be no information left on how to make it...
Completed: You said there was one last bottle left? That's a big deal to find it! Let's make sure it's the real thing first. A drop on the page of the secret codex... it worked! Letters began to appear!