From Den_Den_Mushi (updated): Toki was aiming for Wano, her parents' hometown, though she doesn't know where she herself was born. WB was fleeing marine pursuit. Oden, who didn't know about the scope or existence of the WG thought it strange that they didn't fight them. WB told Oden that the government currently doesn't consider Wano as something that they govern. 2 years after Oden set sail, Momonosuke was born Oden now has a wanted poster, so Izo thought that he should consider his family and return but Oden refused due to not having an answer yet and Toki said she was ok with it. The WBP had grown in number and now had 5 divisions. Oden was entrusted with 2nd division. An orphan with nowhere to go, Teach, also joined while they continued their adventures Oden desired increasingly to return. Sukiyaki was critically ill and wanted Oden to be his successor, however due to Oden's absence Orochi was working as a substitute while concealing his last name, Kurozumi. Orochi promised to repay his debt to Oden and Sukiyaki while also clearing the Kurozumi name. His grandfather committed seppuku after losing to the Kozuki family. They were formerly one of the 5 great families. Orochi had been cooperating with an old woman, the user of the Mane Mane no Mi, making preparations to become Shogun. The 4th year after Oden's departure they met the Roger pirates who had just defeated some marines. Roger said that it's not fun fighting marines who are not rivals like Sengoku and Garp. Knowing that he wouldn't live much longer, he started thinking about killing WB (and he himself dying in the process).