
It’s not my theory, actually is a really well known theory in the fandom. Basically it talks about the fact that a “past allen” existed and he was friend of the twins. This Allen willingly said to a almost dead Nea that he wanted to be the one to have the Noah memories of the 14th because he could protect them (this is actually cannon. This was when de 14th awoke when Allen was out with Johnny), the thing here is that now it’s really confirmed (?). Allen saying that he doesn’t remember how but he has experienced warm and a lot of hints through the story makes me believe that this theory it’d actually true.

Oh ... I mean it wasn't a theory, the first time Nea woke up he clearly said that Allen was alive 35 years ago. Well ... if I have to make a theory out of the last chapter it'll be that Allen might have gotten his memory erased by apocryphos since we saw them pass by in the chapter, but when they tried to " fuse " with Allen back at the congregation they failed to access his memories so I don't know ... ( ̄へ ̄)
I am really curious about all the past Allen stuff thought. Ever since Nea woke up, he keep talking about him, they must have been close. And Nea doesn't seem that much concerned about that, like " oh ... my friend got younger I have no idea how that happen ... oh well ╮( ̄▽ ̄)╭ "
I mean, nobody seems to know anything about pastAllen, not even Cross, Road or Wisely. The only ones who know are Nea and the apocryphos and they are both certain that Allen is on their side. So kinda concerning ...
FINALLY A THEORY THAT IM 100% SURE ITS REAL. AAAAAAAA. After reading this thing for almost 7 years and having a lot of conspiracy theories through the story, fINALLY, one of my theories is almost confirmed skdnaosj. I told yalll