From what I got. The REAL EARL split into two mana, and neah. Mana kills Neah and becomes the Earl. Allen (whose real name has not been said) was somehow nearby when this happens and neah chooses him as his host for his next reincarnation. Afterwards Mana (the Earl) looses his mind and forgets who he is and joins the circus 30 years after neah death. Somehow Neahs host (Allen) ends up in the same circus with him. Cross notices that it could be the new host of neah but dosent believe it cus he should be in his 30s instead the host is a small child(idk why but, if you go back to when they show a bit of the fourteens past you will see a guy who looks kinda like Allen, a more grown version of him of course . He even offers himself and tells neah that he will help him). This entire time the Earl (mana) dosent remember who he really is, and he is looking for his twin brother neah (Allen). At this point Allen dosent have any memory of his life or how he got there he dosent even have a name. Personally I think him not remembering his life or anything before he got there has something to do with why he did not age instead of aging he got younger. For some unknown reason yet to be explained mana (the Earl) name Allen (neah) the name of his dog that died.
So i believe in short no. ┑(￣Д ￣)┍ Mana and neah might share the same soul to some point since they did split from one person (the real millennium Earl) But this is just the Noah part. Allen is Allen his own soul that’s why cross tells Allen that he would eventually be devoured/disappear because his soul as body will be taken over by the Noah (neah) since he is just the host for Neah.
I hope I explained myself good and didn’t confuse you in any way. The last part is just what I think of course I could be wrong. ╮(￣▽￣)╭
Thanks for explaining me , I was confused about Neah reincarnation part (இдஇ; ). I keep guessing and guessing because the author keep giving many riddles in the story and my head can't take it anymore.
I thought Allen is one of Earl's soul because he become part of Noah or he's a Noah >~>
That's just another guess :'D I always thought Allen could be one of the ancient people in 7000 years or something. I'm waiting for the revelation of Noah and Exorcist and why did they started the war. It's like Neah, Earl, and Allen are connected to each other soooo I'll just keep guessing in nth times no matter how many times I read this manga (╯°Д °)╯╧╧
I've reread and rewatch the anime many times until now I don't know who is the heart of Innocence, Is Noah Family really the apostles of God based on self proclaim of Road, Is Mana, Allen, Neah, and Earl are the same soul or the Adam because according to Black Order's Guardian (I forgot the name) Allen will destroy the time and Allen is part of Noah and Neah's reincarnation, and many more. I love this manga and the anime the plot is good no matter what others said that it's confusing and boring for me the story is very good full of mysteries to seek. Wishing for the author in good health hoping they won't force themselves to finish it, just take it time until they are healthy enough to finish the story.
My guess is Allen and Earl are one soul but who knows huehuehuehur.