Feels like a shorter chapter, but still so much left to digest going forward...
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Todoroki grabs ahold of the injured Bakugo, as well as Endeavor, as Midoryia gets even more pissed heading face first to Shigaraki. Meanwhile, Gigantomachia continues his rampage as he smells "two masters", while the rest of the Evacuation team head forward to warn the rest of the heroes, with Uraraka wondering what's going on. Shigaraki touches Midoryia's face, preparing to take One For All, as Midoryia back in the vestige world (now with more body visible), sees Shigaraki being forcefully submitted by All For One, trying to fight back. He falls over as Nana grabs the back of head, saying they'll handle it.
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I love AFO's taunt (which I assume it's him based on the text difference) of "There was lots of spilled blood today and that was the most useless of them all" was what finally led Deku to stop giving any more fucks and go full apeshit on him, chomping into the tendrils like a straight up monster. And that chilling image of Shigaraki being completely scared, and his face ripping open to see AFO's grinning smile. Then there's that very interesting comment about Machia sensing "two masters", which could possibly be both AFO and Shigraki, but I really think it's Midoryia he's smelling, which means it is now even more likely Machia switching allegiances may actually come to pass. And now looks like we're heading for a final spirit battle, looking to be the OFA successors and AFO using their chosen champions. And with Shigaraki trying to resist, I'm now starting to think we might end up getting them trying to "save" Shigaraki from AFO's influence, and possibly even lead to him learning the truth. Either way, I feel like only one of the two baddies is making it out of this arc alive.
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It made sense for it to be Nana, due to the obvious answer of them facing her grandson, but also the visual parallel of her holding Deku's head, the same thing she did in Shigaraki's vestige earlier. I imagine the others will make their presence known once it's the right time.