Wow. What a returning chapter. It pretty much lived up to everything I had imagined it would be art-wise and story/character-wise. Probably the most prominent chapter so far, as it really speaks to the title more than ever before. This isn't as simple as Allen having a Noah inside him while also possessing innocence. Now he's on the verge of awakening as a half of Adam himself, and it's looking more and more like he has the Heart. It doesn't get any more gray than that.
Saw a theory on mangahere's comments that the current Earl is a kind of replication that Mana created(maybe subconcsiously, in a similar manner as the original Earl splitting into two due to the Earl's ability to create/destroy) to kill Nea, and that Earl went on to faithfully/robotically fulfill his Noah duties after Mana wandered off in his insane grief, probably not even realizing who it was when he resurrected Mana as an Akuma. And it wasn't until after he'd died and the Earl began to be confronted with the memory of Nea through Allen that he began regaining Mana's memories(whether Mana implanted the memories in him or just in the nature of Noah transferring process). So the current Earl is in theory both the actual Earl, and the real deal Mana as well.
Or at least that seems to be the only viable way around the Akuma Mana plothole. I'd honestly rather it lean more toward the current Earl being a result of Mana being devoured by his Noah memory due to his conflict/feelings of betrayal, and 'becoming a puppet'. It would make the Earl's character feel less broken and jaded, and it's a concept that was hinted at in this chapter with Wisely. But, that doesn't leave an explanation for the panel with Mana holding Nea when the Earl kills him, let alone Akuma Mana.
Of course, the only way to explain it is to have both, Mana gets swallowed by his Noah memory, uses his power of creation to bring about the puppet Earl so that he doesn't become the puppet, and deals with personality disorder until he dies and then puppet Earl slowly obtains his memories a la Nea-Allen(though obviously not the same process here). I just don't know if I like the option where a puppet Earl is created because it feels less genuine in terms of Mana's personality and memory resurfacing, but is there really any other way? I just hope if it is the case, there's a solid explanation behind it.
If it turns out to be simple manipulation/distortion of Allen's memory, that will feel like a huge cop out. Though I have faith Hoshino-sensei has had the answers since the beginning, and that won't be the case.
Gah this three month in between is gonna be hell, but considering what we've already gone through, and the kind of quality we can expect to get every chapter, I think it's not such a large price to pay.