The Octunnumi does not exist.
The beings mentioned in these letters and indeed the beings themselves do not exist.
The words in these letters were certainly not written by the beings that do not exist – no way. Not at all. Not one word.
These writings hold no hidden messages from said imaginary beings. They will not lead to… well – anywhere… they are not part of anything.
And just to clarify, Scariodintts are fundamentally lovely and have your best interest at heart but also, do not exist.