Deep betrayal in anime

[Claraviolet]

Well, I know that it's fairly common in many anime.... But I have been thinking... What is the greatest betrayal according to you?

As for me, I believe Sasuke leaving naruto will be at the top. Or may be danzo using itachi might be at the top. I can't decide. .

What about you guys?

 

[Demon_Skeith]

Lots of great ones, but the one that comes to mind is Lelouch for what he did.

 

[NameGervin]

I gotta agree, Code Geass comes first to my mind.