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It was nice to see Cross in action again, even if it was for a brief moment. Once again its mentioned that Allen (that is the Kid with the Red Arm currently) should be way older than what he looks in the flashback. I hope Hoshino will answer this question too in this arc.
Red gets to bond a bit with Allen (Mana's dog, not past Allen nor our protagonist, who still hasn't adopted his name). For the poor kid, it may have feel like a little relief in his miserable life. It's sad this will turn tragic as, as far as I know,
the dog will be killed by that asshole clown that beat Red in the previous chapter.
Also, if someone still doubted that Mana was the Earl after the previous chapters, this outright confirms that they are one and the same (though its not clear if the suit that is the Earl has free will or not). I'm still wondering how Mana could had been brought back as an Akuma if he is supposed to be the Earl, but I have trust in Hoshino, and I hope she will answer this question by the end of this arc.
Also, Mana was seen to rejuvenate when he was having that dream with the Earl. I wonder if he became older suddenly like he told to Allen, and, in case of being true, if that thing is related with Allen being a kid in the flashback.
I also wonder if the voice at the end who says "I'm right here" is Mana, Nea, or the Earl...
Again, this chapter creates a ton of questions...