i just want to know what is this betrayal everyone is talking about, like what in gods nam...

I suspect it was because he went to live with humans for a while - even had a kid with one - and when that got back to the Clan, they decided it was a betrayal.

The so-called "betrayal" (can't even write that with a straight face) from the clan's point of view is that Muzaka was a level-headed, just and peaceful leader.
Much like Rai for the nobles, Muzaka also liked humans and didn't condone their senseless killing or their subjugation and he also suffered from a healthy dose of wanderlust which caused him to leave the Clan for years at a time. His long absences gave time for the group of werewolves (lead by Maduke) who hungered for power and thought themselves better than humans to raise to power, and to make even those loyal to Muzaka doubt his leadership as they sometimes couldn't understand the reasoning behind his decisions.
So Muzaka was dubbed a traitor to the Clan for being on the "human's side".

V-chan you are right about the werewolves being down for him going on a rampage, since that was their* doing in hopes of him and Rai getting rid of eachother so the real traitorous factions could procede with their plans.
*: here I'm referring to Maduke's party (along with the noble clan leaders turned traitor)

And I don't think him having a child with a human factors into the equation, at least not like DiggityDog thinks . I'm convinced that besides Maduke and his closest cronies the werewolves don't know about Ashleen and her mother. The werewolves are inherently a warrior race with strong sense of pride and honor. A lot of the enemy wolves have been shown to still be keeping to their honor code and their pride as warriors - they just followed the times so to speak. Like that I can't believe they could go along with Maduke and be loyal to him while knowing "he" killed their previous leader's child and woman.

In my opinion this entire "betrayal" business is a joke, 'cause it was the clan who betrayed Muzaka and not the other way around.

You are interesting.

Anonym - exactly -- but the "betrayal" line was sponsored and fed by the "Maduke insurgents" until the younger generations only know the "betrayal" story. The werewolves (or at the very least the insurgents) DID know about the child because in the anime ova (Noblesse: Pamyeol-ui Sijak OVA), the werewolves were discussing killing Muzaka and "the child".

yeah, i feel like the manga is going to turn out like that, where its eventually revealed that the werewolves (Maduke) set up he death of Muzaka's daughter's death with the hopes that Muzaka and Rai would kill each other hence taking out the two major powers that would stand in there way.
and i feel like the female werewolf they had been experimenting on (i don't remember her name) some how found out about this plot and in order to silence her, they labelled her a traitor and has time went by, everyone forgot about her.
i'm hoping that this is the way it goes down cause that would mean Muzaka and Rai wouldn't have to fight anymore.

I hope it will go like it too :)
Btw I also forgot the female werewolf's name lol, well we'll have a chance to learn it again in a few chapters...

Now I think we are talking about the same thing here, sorry if I didn't pen it clearly.
I was saying that I believe those wolfves in league with Maduke (insurgents as you called them), or at least those of them most loyal/ closest to him, do/did know about the kid; just not the others.

And by Ashleen not factoring into Muzaka being labbelled as a traitor I mean that while for a few of Maduke's supporters her existence might have justified things, it would have happened anyway without her too. To be crude about it, she was just a very useful pawn to be sacrificed.

*labelled, sorry ^^

Yep - I agree :) Now.... we just have to be PATIENT (not my strong suit) and wait for the mangaka to let us know what's what (⊙…⊙ )