spoilers:end of spoilers
All For One, now merely just an infant, still persists in his goal to take control back from Tomura, crawling his way across the ground. Bakugo appears before him and is about to pass out, but stands his ground, refusing to stop until his perfect victory is achieved. AFO shoots one last shot at Bakugo, who simply chomps it away, causing AFO to give into his rage, whining and crying as he reverts to a fetus, and finally disappearing out of existence.
Meanwhile, Deku is still fighting Shigaraki, who's now begun to flood part of the city with his Decay, declaring his intention to destroy all of Japan within just a week's time. Deku just barely is able to avoid getting touched by Shigaraki using Danger Sense, however Shigaraki manages to steal Danger Sense away.
spoilers:end of spoilers
AFO finally dead! I still don't believe the character is "gone for good" since his vestige is technically still around, and I imagine they'll be something going on with it especially since he mentioned a "last ditch tactic" that hasn't been used yet. Bakugo getting to do his own version of All Might's victory pose (kind of like the third movie), fist pumped up while lying nearly passed out was nice to see.
It's funny that after Deku and Shigaraki doing nothing for so long, suddenly he just floods an entire city like nothing off page. It does highlight how dangerous he really is, and now that he's starting to steal all the One For All Quirks individually, it begs the question of how he even can be defeated at this point, and what Deku is going to look like by the end. If anything I'm at least glad to see back to the focus on this fight, and anticipated where it'll go.