Whitebeard's Little Brother! Oden's Great Adventure!

Having pulled her clear of danger, Oden is nursed by Toki while his swelling recedes. The next morning their earlier attackers return under their captain Karma, but Whitebeard cuts in and floors Karma with a single punch. Faced with an Emperor of the sea before them, the remaining thugs bolt in fright. Because Oden had abandoned his own ambition to rescue a woman, Whitebeard grants him a place on the ship, and Izou, Toki, Inuarashi, and Nekomamushi come aboard alongside him.

Toki confides to Oden that Wano was her parents' birthplace, which is why she yearns to see the country. Out at sea, Oden quickly proves fearsomely strong, sinking a hostile ship before his crewmates get their chance to plunder it, and he records every exploit in his journal. During his second year with the crew, he and Toki have a son they name Momonosuke; Oden becomes a wanted man overseas, and when Whitebeard splits the crew into divisions, he reluctantly assumes command of the second. In Wano, the gravely ill shogun Sukiyaki, with Oden away, installs Kurozumi Orochi as his stand-in. Later the crew takes in a young orphan, Teach, whom Whitebeard cannot turn down, and news reaches the Roger Pirates of a Wano swordsman serving under Whitebeard, leaving Roger keen to meet him in person.

The anime adds a Takotopus pirate imagining what an umibozu might look like, a bout between Oden and Karma before the intervention, Izou being freed as Whitebeard slices through his bindings, and a giant that Oden runs into being beaten by Whitebeard. It also lengthens two scenes: when Oden and Toki first meet, and Teach's recruitment into the Whitebeard Pirates. The episode falls within the Wano Country Arc.