Each chapter contains a cipher. Chapters 2 (Admittedly “Cipher” is a bit far for this one, but it’s a hidden message) and 4 still have unsolved ciphers.
I’ll give a clue for chapter 2, in one of the C1 sources, I’ve hidden instructions on how to solve it’s puzzle. Chapter 4 may take a bit more work, but clues are hidden in there.
This part of the new story caught my eye, look closely. You can see words like cry in it, but also ones like TYP and ban. This is most likely the cypher for this story.
Tick tock, tick tock Time is running out my friends In C1D a clue can be found Don’t look so down, Or do so as you will There might be instructions Hidden under your [Eyes]