In the beginning, Oden narrates that after Roger returned from Laugh Tale, Akataro (Shanks) asked him a question and then cried terribly. No specifics on what that question is, but it may be related to how Roger was born too early or his inevitable death.
Interesting note is that Roger now understands why he had to go by 'Gold Roger' rather than Gol D. Roger (this is the part where he laughs while Rayleigh reads the newspaper about how he became the Pirate King).
It looks like Roger disbanded his crew, not only because he's going to die soon, but also because other pirate crews (and Marines?) began targeting them, thinking they had great treasure. They're definitely not a threat; I think Roger just thought it was the right time to say goodbye.
Aww, Roger kindly reminds his crew to drop off Oden at Wano after they drop him off at a "place with no Marines." He also mentions he plans on meeting Whitebeard and asks Oden if Izo plans on returning to Wano, too. It looks like Izo is a part of Whitebeard's family, though haha since he's not going back.
Oden has also learned something very valuable like Roger. He knows now why Wano has been isolated for so long, but no specific reason is given ("There's a reason why Wano is isolated!"). But until the day Joy Boy someday reappears, they must open Wano's borders! This must be the answer Oden learned at Laugh Tale. Very fascinating. Again, no specifics.
Tragically, Oden narrates he was convinced he was not going to die. So when he parted ways with the crew, he laughed instead because they were going to meet again someday
Very cute reunion with Toki, Momonosuke, and Hiyori ♡ Haha the Scabbards are still bitter towards Oden, but the reception at Kuri is surprisingly good, thanks to Toki's hard work and dedication in his absence. Right after she recovered from her illness, she helped people in the town, never gloated that she was the Daimyo's wife, and told everyone the stories about Oden's adventure. Toki, Wife of the Year.
Kiku readily accepts that Izo won't be coming back anytime soon and confirmation about Ashura Doji and Denjiro's current locations. Ashura went off to control the bandits running wild in the area while Denjiro is going around Wano lending money (probably to those who need it). This explains their absence a year before.
Orochi confirmed to have succeeded Sukiyaki as Shogun. Oden is confused as he never thought of Orochi as his younger brother, contrary to what Orochi said, and he already knew Orochi was from the Kurozumi clan. Also mentions of weapon making factories and how men from villages and towns are being dragged there to work.
Orochi gets away with all this (and remains Shogun) because of a pirate named Kaido. There's something the Scabbards are not telling Oden, and Toki suddenly tells Kinemon not to say anything, but Oden demands to hear it. Raizo takes Momonosuke and Hiyori out of the room, and Kinemon reveals that about half a year ago, a man who refused to work at one of the weapons factories was executed alongside his family.
This was the last straw for the Scabbards, who charged into the Flower Capital to confront Orochi, but from behind and at the same time, Orochi had Kaido send his subordinates to Kuri. They attacked the castle to kill Momonosuke (Oden's heir), but Kawamatsu and Inuarashi, who had stayed behind to protect them, fended them off (such badasses).
The defense was successful, but Toki was injured when she threw herself in front of an arrow to protect her children (not specified if Momonosuke) in the final assault. Of course, Kinemon can't apologize enough for what happened, and Oden is distressed. A clarification from the leaks, but it's Oden who says, "Something like this? Toki, have you never heard of my 'old stories'?" Edit: Sorry, I think it's specified Toki protected Momonosuke. Oden says she did well protecting their child (not "children") so it sounds like she took an arrow meant for Momo. Sorry about that!
Cue Oden rampaging in the Flower Capital solo. So cool. The coward Orochi tries to use the Kaido card, telling Oden to think of what will happen to this country if Orochi dies and Kaido is pissed. Oden: "I'll do that after slashing you." Orochi thinks, "That's right, this guy was a crazy bastard!"
*Important note: Oden declares that he knows now how Orochi thinks/acts (he's very devious and sly) so the possibility of Orochi tricking and trapping Oden (so he is executed) seems pretty low to me. I definitely think something else happens to Oden (it may have to do with him protecting his family, the Scabbards, and/or Kuni).