HOLY SHIT!

Please read DGM ch 166 to understand this.
Oh
My
God.
Shit has REALLY hit the fan.

We begin by seeing a clown and a boy talking about a dead dog. This is one of the 14th Naoh's memories. Then, we see Allen just entering the room Cross is in. Allen asks about the 14th's connection to him and Mana.

And we find out that the 14tth had an older brother.

His name is Mana Walker.

this is a quote from the chapter: "Cross: When No.14 died, I promised that I will protect Mana. Because if I do so, you promised me you would return to Mana, Allen. No, 'No. 14'."

Cross then tells Allen that he has the 14th's memories implanted into him, and that he is the host necessary for the 14th's revival.

HOLY SHIT!!!

It kinda makes sense. After all, Allen opposes the Earl, just like the 14th. Allen was on Tyki's hit list, which was filled with people associated with the 14th, and Allen and Mana's code operates the Ark. AND, the 14th's shadow is only seen by Allen.

End