It turns out that there's more info about the legendary treasure One Piece and the Laugh Tale island. After the war between Roger and Whitebeard, Izo had decided to stay with the Whitebeard Pirates and the cat and dog mink duo once again became stowaways on Roger's ship. It appeared that the Roger during his travel to Skypedia had left a message on the Shandorian Golden Belfry Bell.
I wonder what's next before Oden and his family decided to return to Wano other than Orochi's dark determination to take revenge on the Kozuki family.
Poor Oden, telling Whitey-chan about joining Roger until Whitebeard made a dismayed comment, (that very same comment when Oden and Whitebeard comment about Toki).