If I Could Write A Letter

Yaotl

A crumpled beige envelope lays there on the ground, there is no address or return address. The only thing written on the front is in what appears to be dark red ink: HUETZCA
If one was fluent in the language they'd recognize it as the Nahuatl word for "to laugh".
But what is this letter doing here? And who, or what, is Huetzca?

If one bothered to open the envelope, perhaps out of curiosity, they'd see that the entire letter, also written in that dark red ink, is written entirely in the Nahuatl language. The language used primarily by the Aztecs, but also the Toltecs, some Mayans, and those from the ancient city of Teotihuacan as well.
If it can be deciphered then perhaps these questions can be answered.... 

_____________________

Obsidian,

I won't waste time with useless words. I've never been much of a speaker, though you know that, so I'll be my "usual self" (as you call it) and just cut to the chase...
I-
I don't know how to say this other than being blunt...
I can feel it Obsidian....
I'm fading...
Though I don't know when, I do know soon.
Very soon by our standards.

Would it be too much to ask if I could see you one last time? Even a glance will do. Or-
Five minutes. That's all I ask.
Five minutes to talk.
I can't leave this world without reconciliation. I just can't Obsidian.
Forget teleportation. Forget magic. I'd climb mountains, swim across oceans, get lost in the desert, anything to see you once more...
I've been meaning to for years but-
No. There are no excuses.
None.
I'm sorry for what I did. Please, brother, I need to just see you one last time... smile or frown...
I don't wish to die knowing I've hurt you and never even attempted to make up for it. I am a foolish and selfish man Obsidian. Yet still I find I can't fully change my ways...

There is something else I need to tell you, have needed to for a very long time, though my pride and stupidity would not let me. But I say it to you now: he did not fade as previously thought. The Hunter lives on.
I have been travelling with him in fact. Yes, brother, I found him some centuries ago. And I have followed with him ever since.
The things I've seen...
I can't describe...

And I shouldn't.
I understand now what you told me so long ago. There are some things that should be let alone.

Please, I beg, see me one last time...

I do wonder.... Do you think Maya would ever forgive me?
Still selfish, I know, but-
But nothing I suppose.
I'll be honest, I'm not sure I can ever look Paqui or Coyotl in the eye ever again...
Not after I just left them at such a young age...
Of course Coyotl wasn't as young.
Though the result is still the same I suppose.
Paqui never truly knew me. And Coyotl I would guess only sees me as the brother who abandoned you all...

Is that truly so?
Perhaps I should not indulge myself with false hope that it is not.
I deserve it. I left with no trace or explanation...

Something you all deserve to hear the reason for face-to-face, not through the cowardice of written word.

Give me but a few moments of your time and I will tell you everything.
I will withhold no information that i am not vowed to secrecy upon. This I promise you.

I hate to say this but please do hurry. I have maybe a few years? Decades? A century or so at most I am sure.
I don't know exactly how long until I leave this life for the next....
With all I've done do you think, perhaps, that she will reject me too?...
I am sorry, that should not be brought up. My sincerest apologies.

Until We Meet Again,
-War