Well, there's a lot to unpack in this chapter, for sure! The Reverie seems to be a huge exercise in answering a lot of long-standing mythos questions while also simultaneously giving us like a lot of new ones. The chapter begins with Mjosgard professing his alliance with the Fishmen, and Mansherry healing Shirahoshi's wounds. We get the little bit of detail that apparently off-screen Fujitora is having a meeting with Cobra and Riku -- the two countries that were taken over by a Shichibukai member. I guess he's trying to gather... confessions or something to truly bring down the Shichibukai?
We then cut away to the apparent queen dowager of the Sorbet Kingdom, Connie, as she's trying to get into the location of the Reverie, and taking advantage of the conversation between the wounded Saint Charloss and his dad Saint Rosswell... oh, and by the way, Rosswell is riding around on the seemingly non-sentient body of Bartholomew Kuma, who's now a slave that's passed around among the Tenryuubito.
Oh, and in the most low-key reveal of a character's true nature, Kuma's apparently the former king of the Sorbet Kingdom, what the HELL!
Oh, oh, and apparently 'Connie' is actually Bonnie, who quickly reverts back to her normal form, is infiltrating the Reverie, and is also from the Sorbet Kingdom and has some connection (Daughter? Wife? Sister?) with Kuma.
Yeah, the revelations are just coming one after the other, and then we check in with Sabo and the other Revolutionary generals, and apparently Kuma became the Pacifista prototype on his own volition due to World Government manipulation, and not as some weird part of a Revolutionary scheme like most people seem to think. He's made into a Pacifista for the express purpose of being made an example of -- that not even royalty who side against the World Government is immune to the horrors that they can inflict. Team Sabo's mission is apparently partly a rescue mission for Kuma.
We then actually have a confirmation as to just how the Reverie works, with a little montage of the characters we actually recognize. We get a confirmation that, yes, Wano isn't affiliated with the Government, apparently around 50 of the 170 countries attend the Reverie, and that the rotating chairman at this point is Hamburger of Ballywood.
The Gorosei, previously established as the highest authority in the world, makes this introdump about the Nefertari family and how they were traitors from the original founding 20 members, and they discuss about how they might've found out something, and that thanks to the disturbances from Big Mom/Kaidou/the Marineford war, they discuss the need of a 'Great Cleansing'. Are they going to create another Void Century?
And, of course, the biggest plot twist is that the mysterious tall figure, who goes by the name 'Im', has been sitting inside a room slashing photographs of Luffy, Blackbeard and Shirahoshi, while holding Vivi's picture, before straight-up just sitting on the Empty Throne. And Im is apparently the one true leader of the world that even the Gorosei bow before, and the Gorosei ask Im if he has decided who the 'Light' that needs to be 'extinguished' is. Im is silent as we zoom in to his (her?) eye... which is the Rinnegan-esque eyeball that Dracule Mihawk has.
My god this chapter's just full of bombshells, isn't it? It's extremely exciting to read One Piece with literally so much stuff going on, honestly.